forked from MirrorRepos/RomWBW
Wayne Warthen
7 years ago
committed by
GitHub
GitHub
19 changed files with 3695 additions and 271 deletions
@ -1,4 +1,9 @@ |
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@echo off |
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set TOOLS=../../Tools |
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setlocal & cd .\Forth && call Build || exit /b 1 & endlocal |
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setlocal |
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PowerShell .\Build.ps1 %* |
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@ -0,0 +1,19 @@ |
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@echo off |
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setlocal |
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set TOOLS=../../../Tools |
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set PATH=%TOOLS%\tasm32;%TOOLS%\zx;%PATH% |
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set TASMTABS=%TOOLS%\tasm32 |
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set ZXBINDIR=%TOOLS%/cpm/bin/ |
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set ZXLIBDIR=%TOOLS%/cpm/lib/ |
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set ZXINCDIR=%TOOLS%/cpm/include/ |
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|
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zx z80mr camel80 |
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zx MLOAD25 -camel80.bin=camel80.hex |
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copy camel80.bin ..\ |
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goto :eof |
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@ -0,0 +1,7 @@ |
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@echo off |
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setlocal |
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|
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if exist *.bin del *.bin |
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if exist *.lst del *.lst |
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if exist *.prn del *.prn |
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if exist *.hex del *.hex |
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File diff suppressed because it is too large
@ -0,0 +1,154 @@ |
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; LISTING 3. |
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; |
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; =============================================== |
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; CamelForth for the Zilog Z80 |
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; Copyright (c) 1994,1995 Bradford J. Rodriguez |
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; |
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; This program is free software; you can redistribute it and/or modify |
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; it under the terms of the GNU General Public License as published by |
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; the Free Software Foundation; either version 3 of the License, or |
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; (at your option) any later version. |
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; |
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; This program is distributed in the hope that it will be useful, |
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; but WITHOUT ANY WARRANTY; without even the implied warranty of |
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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; GNU General Public License for more details. |
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; |
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; You should have received a copy of the GNU General Public License |
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; along with this program. If not, see <http://www.gnu.org/licenses/>. |
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|
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; Commercial inquiries should be directed to the author at |
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; 115 First St., #105, Collingwood, Ontario L9Y 4W3 Canada |
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; or via email to bj@camelforth.com |
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; |
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; =============================================== |
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; CAMEL80D.AZM: CPU and Model Dependencies |
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; Source code is for the Z80MR macro assembler. |
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; Forth words are documented as follows: |
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;* NAME stack -- stack description |
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; Word names in upper case are from the ANS |
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; Forth Core word set. Names in lower case are |
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; "internal" implementation words & extensions. |
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; |
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; Direct-Threaded Forth model for Zilog Z80 |
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; cell size is 16 bits (2 bytes) |
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; char size is 8 bits (1 byte) |
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; address unit is 8 bits (1 byte), i.e., |
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; addresses are byte-aligned. |
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; =============================================== |
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|
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; ALIGNMENT AND PORTABILITY OPERATORS =========== |
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; Many of these are synonyms for other words, |
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; and so are defined as CODE words. |
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|
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;C ALIGN -- align HERE |
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head ALIGN,5,ALIGN,docode |
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noop: next |
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|
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;C ALIGNED addr -- a-addr align given addr |
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head ALIGNED,7,ALIGNED,docode |
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jr noop |
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|
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;Z CELL -- n size of one cell |
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head CELL,4,CELL,docon |
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dw 2 |
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|
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;C CELL+ a-addr1 -- a-addr2 add cell size |
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; 2 + ; |
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head CELLPLUS,5,CELL+,docode |
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inc bc |
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inc bc |
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next |
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|
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;C CELLS n1 -- n2 cells->adrs units |
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head CELLS,5,CELLS,docode |
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jp twostar |
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|
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;C CHAR+ c-addr1 -- c-addr2 add char size |
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head CHARPLUS,5,CHAR+,docode |
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jp oneplus |
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|
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;C CHARS n1 -- n2 chars->adrs units |
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head CHARS,5,CHARS,docode |
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jr noop |
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|
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;C >BODY xt -- a-addr adrs of param field |
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; 3 + ; Z80 (3 byte CALL) |
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head TOBODY,5,>BODY,docolon |
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DW LIT,3,PLUS,EXIT |
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|
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;X COMPILE, xt -- append execution token |
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; I called this word ,XT before I discovered that |
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; it is defined in the ANSI standard as COMPILE,. |
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; On a DTC Forth this simply appends xt (like , ) |
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; but on an STC Forth this must append 'CALL xt'. |
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head COMMAXT,8,'COMPILE,',docode |
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jp COMMA |
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|
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;Z !CF adrs cfa -- set code action of a word |
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; 0CD OVER C! store 'CALL adrs' instr |
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; 1+ ! ; Z80 VERSION |
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; Depending on the implementation this could |
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; append CALL adrs or JUMP adrs. |
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head STORECF,3,!CF,docolon |
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DW LIT,0CDH,OVER,CSTORE |
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DW ONEPLUS,STORE,EXIT |
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|
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;Z ,CF adrs -- append a code field |
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; HERE !CF 3 ALLOT ; Z80 VERSION (3 bytes) |
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head COMMACF,3,',CF',docolon |
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DW HERE,STORECF,LIT,3,ALLOT,EXIT |
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|
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;Z !COLON -- change code field to docolon |
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; -3 ALLOT docolon-adrs ,CF ; |
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; This should be used immediately after CREATE. |
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; This is made a distinct word, because on an STC |
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; Forth, colon definitions have no code field. |
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head STORCOLON,6,'!COLON',docolon |
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DW LIT,-3,ALLOT |
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DW LIT,docolon,COMMACF,EXIT |
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|
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;Z ,EXIT -- append hi-level EXIT action |
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; ['] EXIT ,XT ; |
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; This is made a distinct word, because on an STC |
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; Forth, it appends a RET instruction, not an xt. |
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head CEXIT,5,',EXIT',docolon |
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DW LIT,EXIT,COMMAXT,EXIT |
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|
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; CONTROL STRUCTURES ============================ |
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; These words allow Forth control structure words |
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; to be defined portably. |
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;Z ,BRANCH xt -- append a branch instruction |
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; xt is the branch operator to use, e.g. qbranch |
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; or (loop). It does NOT append the destination |
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; address. On the Z80 this is equivalent to ,XT. |
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head COMMABRANCH,7,',BRANCH',docode |
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jp COMMA |
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|
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;Z ,DEST dest -- append a branch address |
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; This appends the given destination address to |
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; the branch instruction. On the Z80 this is ',' |
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; ...other CPUs may use relative addressing. |
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head COMMADEST,5,',DEST',docode |
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jp COMMA |
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|
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;Z !DEST dest adrs -- change a branch dest'n |
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; Changes the destination address found at 'adrs' |
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; to the given 'dest'. On the Z80 this is '!' |
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; ...other CPUs may need relative addressing. |
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head STOREDEST,5,'!DEST',docode |
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jp STORE |
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|
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; HEADER STRUCTURE ============================== |
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; The structure of the Forth dictionary headers |
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; (name, link, immediate flag, and "smudge" bit) |
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; does not necessarily differ across CPUs. This |
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; structure is not easily factored into distinct |
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; "portable" words; instead, it is implicit in |
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; the definitions of FIND and CREATE, and also in |
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; NFA>LFA, NFA>CFA, IMMED?, IMMEDIATE, HIDE, and |
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; REVEAL. These words must be (substantially) |
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; rewritten if either the header structure or its |
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; inherent assumptions are changed. |
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File diff suppressed because it is too large
@ -0,0 +1,93 @@ |
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; Listing 1. |
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; =============================================== |
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; CamelForth for the Zilog Z80 |
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; Primitive testing code |
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; |
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; This is the "minimal" test of the CamelForth |
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; kernel. It verifies the threading and nesting |
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; mechanisms, the stacks, and the primitives |
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; DUP EMIT EXIT lit branch ONEPLUS. |
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; It is particularly useful because it does not |
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; use the DO..LOOP, multiply, or divide words, |
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; and because it can be used on embedded CPUs. |
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; The numeric display word .A is also useful |
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; for testing the rest of the Core wordset. |
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; |
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; The required macros and CPU initialization |
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; are in file CAMEL80.AZM. |
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; =============================================== |
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|
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;Z >< u1 -- u2 swap the bytes of TOS |
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head SWAB,2,><,docode |
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ld a,b |
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ld b,c |
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ld c,a |
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next |
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|
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;Z LO c1 -- c2 return low nybble of TOS |
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head LO,2,LO,docode |
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ld a,c |
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and 0fh |
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ld c,a |
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ld b,0 |
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next |
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|
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;Z HI c1 -- c2 return high nybble of TOS |
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head HI,2,HI,docode |
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ld a,c |
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and 0f0h |
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rrca |
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rrca |
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rrca |
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rrca |
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ld c,a |
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ld b,0 |
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next |
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|
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;Z >HEX c1 -- c2 convert nybble to hex char |
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head TOHEX,4,>HEX,docode |
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ld a,c |
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sub 0ah |
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jr c,numeric |
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add a,7 |
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numeric: add a,3ah |
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ld c,a |
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next |
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|
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;Z .HH c -- print byte as 2 hex digits |
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; DUP HI >HEX EMIT LO >HEX EMIT ; |
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head DOTHH,3,.HH,docolon |
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DW DUP,HI,TOHEX,EMIT,LO,TOHEX,EMIT,EXIT |
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|
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;Z .B a -- a+1 fetch & print byte, advancing |
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; DUP C@ .HH 20 EMIT 1+ ; |
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head DOTB,2,.B,docolon |
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DW DUP,CFETCH,DOTHH,lit,20h,EMIT,ONEPLUS,EXIT |
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|
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;Z .A u -- print unsigned as 4 hex digits |
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; DUP >< .HH .HH 20 EMIT ; |
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head DOTA,2,.A,docolon |
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DW DUP,SWAB,DOTHH,DOTHH,lit,20h,EMIT,EXIT |
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|
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;X DUMP addr u -- dump u locations at addr |
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; 0 DO |
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; I 15 AND 0= IF CR DUP .A THEN |
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; .B |
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; LOOP DROP ; |
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head DUMP,4,DUMP,docolon |
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DW LIT,0,XDO |
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DUMP2: DW II,LIT,15,AND,ZEROEQUAL,qbranch,DUMP1 |
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DW CR,DUP,DOTA |
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DUMP1: DW DOTB,XLOOP,DUMP2,DROP,EXIT |
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|
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;Z ZQUIT -- endless dump for testing |
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; 0 BEGIN 0D EMIT 0A EMIT DUP .A |
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; .B .B .B .B .B .B .B .B |
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; .B .B .B .B .B .B .B .B |
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; AGAIN ; |
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head ZQUIT,5,ZQUIT,docolon |
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DW lit,0 |
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zquit1: DW lit,0dh,EMIT,lit,0ah,EMIT,DUP,DOTA |
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DW DOTB,DOTB,DOTB,DOTB,DOTB,DOTB,DOTB,DOTB |
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DW DOTB,DOTB,DOTB,DOTB,DOTB,DOTB,DOTB,DOTB |
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DW branch,zquit1 |
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@ -0,0 +1,7 @@ |
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;Z DUMP adr n -- +++TEMP+++ |
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; 1 UMAX 0 DO .B LOOP DROP ; |
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head DUMP,4,DUMP,docolon |
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DW LIT,1,UMAX,LIT,0,XDO |
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DUMP1: DW DOTB,XLOOP,DUMP1 |
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DW DROP,EXIT |
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|
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@ -0,0 +1,674 @@ |
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GNU GENERAL PUBLIC LICENSE |
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Version 3, 29 June 2007 |
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|
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Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/> |
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Everyone is permitted to copy and distribute verbatim copies |
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of this license document, but changing it is not allowed. |
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|
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Preamble |
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|
|||
The GNU General Public License is a free, copyleft license for |
|||
software and other kinds of works. |
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|
|||
The licenses for most software and other practical works are designed |
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to take away your freedom to share and change the works. By contrast, |
|||
the GNU General Public License is intended to guarantee your freedom to |
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share and change all versions of a program--to make sure it remains free |
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software for all its users. We, the Free Software Foundation, use the |
|||
GNU General Public License for most of our software; it applies also to |
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any other work released this way by its authors. You can apply it to |
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your programs, too. |
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|
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When we speak of free software, we are referring to freedom, not |
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price. Our General Public Licenses are designed to make sure that you |
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have the freedom to distribute copies of free software (and charge for |
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them if you wish), that you receive source code or can get it if you |
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want it, that you can change the software or use pieces of it in new |
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free programs, and that you know you can do these things. |
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To protect your rights, we need to prevent others from denying you |
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these rights or asking you to surrender the rights. Therefore, you have |
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certain responsibilities if you distribute copies of the software, or if |
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you modify it: responsibilities to respect the freedom of others. |
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For example, if you distribute copies of such a program, whether |
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gratis or for a fee, you must pass on to the recipients the same |
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freedoms that you received. You must make sure that they, too, receive |
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or can get the source code. And you must show them these terms so they |
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know their rights. |
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Developers that use the GNU GPL protect your rights with two steps: |
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(1) assert copyright on the software, and (2) offer you this License |
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giving you legal permission to copy, distribute and/or modify it. |
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For the developers' and authors' protection, the GPL clearly explains |
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Some devices are designed to deny users access to install or run |
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protecting users' freedom to change the software. The systematic |
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stand ready to extend this provision to those domains in future versions |
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Finally, every program is threatened constantly by software patents. |
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The precise terms and conditions for copying, distribution and |
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modification follow. |
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TERMS AND CONDITIONS |
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0. Definitions. |
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"This License" refers to version 3 of the GNU General Public License. |
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"Copyright" also means copyright-like laws that apply to other kinds of |
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works, such as semiconductor masks. |
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"The Program" refers to any copyrightable work licensed under this |
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License. Each licensee is addressed as "you". "Licensees" and |
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To "modify" a work means to copy from or adapt all or part of the work |
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A "covered work" means either the unmodified Program or a work based |
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All rights granted under this License are granted for the term of |
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You may charge any price or no price for each copy that you convey, |
|||
and you may offer support or warranty protection for a fee. |
|||
|
|||
5. Conveying Modified Source Versions. |
|||
|
|||
You may convey a work based on the Program, or the modifications to |
|||
produce it from the Program, in the form of source code under the |
|||
terms of section 4, provided that you also meet all of these conditions: |
|||
|
|||
a) The work must carry prominent notices stating that you modified |
|||
it, and giving a relevant date. |
|||
|
|||
b) The work must carry prominent notices stating that it is |
|||
released under this License and any conditions added under section |
|||
7. This requirement modifies the requirement in section 4 to |
|||
"keep intact all notices". |
|||
|
|||
c) You must license the entire work, as a whole, under this |
|||
License to anyone who comes into possession of a copy. This |
|||
License will therefore apply, along with any applicable section 7 |
|||
additional terms, to the whole of the work, and all its parts, |
|||
regardless of how they are packaged. This License gives no |
|||
permission to license the work in any other way, but it does not |
|||
invalidate such permission if you have separately received it. |
|||
|
|||
d) If the work has interactive user interfaces, each must display |
|||
Appropriate Legal Notices; however, if the Program has interactive |
|||
interfaces that do not display Appropriate Legal Notices, your |
|||
work need not make them do so. |
|||
|
|||
A compilation of a covered work with other separate and independent |
|||
works, which are not by their nature extensions of the covered work, |
|||
and which are not combined with it such as to form a larger program, |
|||
in or on a volume of a storage or distribution medium, is called an |
|||
"aggregate" if the compilation and its resulting copyright are not |
|||
used to limit the access or legal rights of the compilation's users |
|||
beyond what the individual works permit. Inclusion of a covered work |
|||
in an aggregate does not cause this License to apply to the other |
|||
parts of the aggregate. |
|||
|
|||
6. Conveying Non-Source Forms. |
|||
|
|||
You may convey a covered work in object code form under the terms |
|||
of sections 4 and 5, provided that you also convey the |
|||
machine-readable Corresponding Source under the terms of this License, |
|||
in one of these ways: |
|||
|
|||
a) Convey the object code in, or embodied in, a physical product |
|||
(including a physical distribution medium), accompanied by the |
|||
Corresponding Source fixed on a durable physical medium |
|||
customarily used for software interchange. |
|||
|
|||
b) Convey the object code in, or embodied in, a physical product |
|||
(including a physical distribution medium), accompanied by a |
|||
written offer, valid for at least three years and valid for as |
|||
long as you offer spare parts or customer support for that product |
|||
model, to give anyone who possesses the object code either (1) a |
|||
copy of the Corresponding Source for all the software in the |
|||
product that is covered by this License, on a durable physical |
|||
medium customarily used for software interchange, for a price no |
|||
more than your reasonable cost of physically performing this |
|||
conveying of source, or (2) access to copy the |
|||
Corresponding Source from a network server at no charge. |
|||
|
|||
c) Convey individual copies of the object code with a copy of the |
|||
written offer to provide the Corresponding Source. This |
|||
alternative is allowed only occasionally and noncommercially, and |
|||
only if you received the object code with such an offer, in accord |
|||
with subsection 6b. |
|||
|
|||
d) Convey the object code by offering access from a designated |
|||
place (gratis or for a charge), and offer equivalent access to the |
|||
Corresponding Source in the same way through the same place at no |
|||
further charge. You need not require recipients to copy the |
|||
Corresponding Source along with the object code. If the place to |
|||
copy the object code is a network server, the Corresponding Source |
|||
may be on a different server (operated by you or a third party) |
|||
that supports equivalent copying facilities, provided you maintain |
|||
clear directions next to the object code saying where to find the |
|||
Corresponding Source. Regardless of what server hosts the |
|||
Corresponding Source, you remain obligated to ensure that it is |
|||
available for as long as needed to satisfy these requirements. |
|||
|
|||
e) Convey the object code using peer-to-peer transmission, provided |
|||
you inform other peers where the object code and Corresponding |
|||
Source of the work are being offered to the general public at no |
|||
charge under subsection 6d. |
|||
|
|||
A separable portion of the object code, whose source code is excluded |
|||
from the Corresponding Source as a System Library, need not be |
|||
included in conveying the object code work. |
|||
|
|||
A "User Product" is either (1) a "consumer product", which means any |
|||
tangible personal property which is normally used for personal, family, |
|||
or household purposes, or (2) anything designed or sold for incorporation |
|||
into a dwelling. In determining whether a product is a consumer product, |
|||
doubtful cases shall be resolved in favor of coverage. For a particular |
|||
product received by a particular user, "normally used" refers to a |
|||
typical or common use of that class of product, regardless of the status |
|||
of the particular user or of the way in which the particular user |
|||
actually uses, or expects or is expected to use, the product. A product |
|||
is a consumer product regardless of whether the product has substantial |
|||
commercial, industrial or non-consumer uses, unless such uses represent |
|||
the only significant mode of use of the product. |
|||
|
|||
"Installation Information" for a User Product means any methods, |
|||
procedures, authorization keys, or other information required to install |
|||
and execute modified versions of a covered work in that User Product from |
|||
a modified version of its Corresponding Source. The information must |
|||
suffice to ensure that the continued functioning of the modified object |
|||
code is in no case prevented or interfered with solely because |
|||
modification has been made. |
|||
|
|||
If you convey an object code work under this section in, or with, or |
|||
specifically for use in, a User Product, and the conveying occurs as |
|||
part of a transaction in which the right of possession and use of the |
|||
User Product is transferred to the recipient in perpetuity or for a |
|||
fixed term (regardless of how the transaction is characterized), the |
|||
Corresponding Source conveyed under this section must be accompanied |
|||
by the Installation Information. But this requirement does not apply |
|||
if neither you nor any third party retains the ability to install |
|||
modified object code on the User Product (for example, the work has |
|||
been installed in ROM). |
|||
|
|||
The requirement to provide Installation Information does not include a |
|||
requirement to continue to provide support service, warranty, or updates |
|||
for a work that has been modified or installed by the recipient, or for |
|||
the User Product in which it has been modified or installed. Access to a |
|||
network may be denied when the modification itself materially and |
|||
adversely affects the operation of the network or violates the rules and |
|||
protocols for communication across the network. |
|||
|
|||
Corresponding Source conveyed, and Installation Information provided, |
|||
in accord with this section must be in a format that is publicly |
|||
documented (and with an implementation available to the public in |
|||
source code form), and must require no special password or key for |
|||
unpacking, reading or copying. |
|||
|
|||
7. Additional Terms. |
|||
|
|||
"Additional permissions" are terms that supplement the terms of this |
|||
License by making exceptions from one or more of its conditions. |
|||
Additional permissions that are applicable to the entire Program shall |
|||
be treated as though they were included in this License, to the extent |
|||
that they are valid under applicable law. If additional permissions |
|||
apply only to part of the Program, that part may be used separately |
|||
under those permissions, but the entire Program remains governed by |
|||
this License without regard to the additional permissions. |
|||
|
|||
When you convey a copy of a covered work, you may at your option |
|||
remove any additional permissions from that copy, or from any part of |
|||
it. (Additional permissions may be written to require their own |
|||
removal in certain cases when you modify the work.) You may place |
|||
additional permissions on material, added by you to a covered work, |
|||
for which you have or can give appropriate copyright permission. |
|||
|
|||
Notwithstanding any other provision of this License, for material you |
|||
add to a covered work, you may (if authorized by the copyright holders of |
|||
that material) supplement the terms of this License with terms: |
|||
|
|||
a) Disclaiming warranty or limiting liability differently from the |
|||
terms of sections 15 and 16 of this License; or |
|||
|
|||
b) Requiring preservation of specified reasonable legal notices or |
|||
author attributions in that material or in the Appropriate Legal |
|||
Notices displayed by works containing it; or |
|||
|
|||
c) Prohibiting misrepresentation of the origin of that material, or |
|||
requiring that modified versions of such material be marked in |
|||
reasonable ways as different from the original version; or |
|||
|
|||
d) Limiting the use for publicity purposes of names of licensors or |
|||
authors of the material; or |
|||
|
|||
e) Declining to grant rights under trademark law for use of some |
|||
trade names, trademarks, or service marks; or |
|||
|
|||
f) Requiring indemnification of licensors and authors of that |
|||
material by anyone who conveys the material (or modified versions of |
|||
it) with contractual assumptions of liability to the recipient, for |
|||
any liability that these contractual assumptions directly impose on |
|||
those licensors and authors. |
|||
|
|||
All other non-permissive additional terms are considered "further |
|||
restrictions" within the meaning of section 10. If the Program as you |
|||
received it, or any part of it, contains a notice stating that it is |
|||
governed by this License along with a term that is a further |
|||
restriction, you may remove that term. If a license document contains |
|||
a further restriction but permits relicensing or conveying under this |
|||
License, you may add to a covered work material governed by the terms |
|||
of that license document, provided that the further restriction does |
|||
not survive such relicensing or conveying. |
|||
|
|||
If you add terms to a covered work in accord with this section, you |
|||
must place, in the relevant source files, a statement of the |
|||
additional terms that apply to those files, or a notice indicating |
|||
where to find the applicable terms. |
|||
|
|||
Additional terms, permissive or non-permissive, may be stated in the |
|||
form of a separately written license, or stated as exceptions; |
|||
the above requirements apply either way. |
|||
|
|||
8. Termination. |
|||
|
|||
You may not propagate or modify a covered work except as expressly |
|||
provided under this License. Any attempt otherwise to propagate or |
|||
modify it is void, and will automatically terminate your rights under |
|||
this License (including any patent licenses granted under the third |
|||
paragraph of section 11). |
|||
|
|||
However, if you cease all violation of this License, then your |
|||
license from a particular copyright holder is reinstated (a) |
|||
provisionally, unless and until the copyright holder explicitly and |
|||
finally terminates your license, and (b) permanently, if the copyright |
|||
holder fails to notify you of the violation by some reasonable means |
|||
prior to 60 days after the cessation. |
|||
|
|||
Moreover, your license from a particular copyright holder is |
|||
reinstated permanently if the copyright holder notifies you of the |
|||
violation by some reasonable means, this is the first time you have |
|||
received notice of violation of this License (for any work) from that |
|||
copyright holder, and you cure the violation prior to 30 days after |
|||
your receipt of the notice. |
|||
|
|||
Termination of your rights under this section does not terminate the |
|||
licenses of parties who have received copies or rights from you under |
|||
this License. If your rights have been terminated and not permanently |
|||
reinstated, you do not qualify to receive new licenses for the same |
|||
material under section 10. |
|||
|
|||
9. Acceptance Not Required for Having Copies. |
|||
|
|||
You are not required to accept this License in order to receive or |
|||
run a copy of the Program. Ancillary propagation of a covered work |
|||
occurring solely as a consequence of using peer-to-peer transmission |
|||
to receive a copy likewise does not require acceptance. However, |
|||
nothing other than this License grants you permission to propagate or |
|||
modify any covered work. These actions infringe copyright if you do |
|||
not accept this License. Therefore, by modifying or propagating a |
|||
covered work, you indicate your acceptance of this License to do so. |
|||
|
|||
10. Automatic Licensing of Downstream Recipients. |
|||
|
|||
Each time you convey a covered work, the recipient automatically |
|||
receives a license from the original licensors, to run, modify and |
|||
propagate that work, subject to this License. You are not responsible |
|||
for enforcing compliance by third parties with this License. |
|||
|
|||
An "entity transaction" is a transaction transferring control of an |
|||
organization, or substantially all assets of one, or subdividing an |
|||
organization, or merging organizations. If propagation of a covered |
|||
work results from an entity transaction, each party to that |
|||
transaction who receives a copy of the work also receives whatever |
|||
licenses to the work the party's predecessor in interest had or could |
|||
give under the previous paragraph, plus a right to possession of the |
|||
Corresponding Source of the work from the predecessor in interest, if |
|||
the predecessor has it or can get it with reasonable efforts. |
|||
|
|||
You may not impose any further restrictions on the exercise of the |
|||
rights granted or affirmed under this License. For example, you may |
|||
not impose a license fee, royalty, or other charge for exercise of |
|||
rights granted under this License, and you may not initiate litigation |
|||
(including a cross-claim or counterclaim in a lawsuit) alleging that |
|||
any patent claim is infringed by making, using, selling, offering for |
|||
sale, or importing the Program or any portion of it. |
|||
|
|||
11. Patents. |
|||
|
|||
A "contributor" is a copyright holder who authorizes use under this |
|||
License of the Program or a work on which the Program is based. The |
|||
work thus licensed is called the contributor's "contributor version". |
|||
|
|||
A contributor's "essential patent claims" are all patent claims |
|||
owned or controlled by the contributor, whether already acquired or |
|||
hereafter acquired, that would be infringed by some manner, permitted |
|||
by this License, of making, using, or selling its contributor version, |
|||
but do not include claims that would be infringed only as a |
|||
consequence of further modification of the contributor version. For |
|||
purposes of this definition, "control" includes the right to grant |
|||
patent sublicenses in a manner consistent with the requirements of |
|||
this License. |
|||
|
|||
Each contributor grants you a non-exclusive, worldwide, royalty-free |
|||
patent license under the contributor's essential patent claims, to |
|||
make, use, sell, offer for sale, import and otherwise run, modify and |
|||
propagate the contents of its contributor version. |
|||
|
|||
In the following three paragraphs, a "patent license" is any express |
|||
agreement or commitment, however denominated, not to enforce a patent |
|||
(such as an express permission to practice a patent or covenant not to |
|||
sue for patent infringement). To "grant" such a patent license to a |
|||
party means to make such an agreement or commitment not to enforce a |
|||
patent against the party. |
|||
|
|||
If you convey a covered work, knowingly relying on a patent license, |
|||
and the Corresponding Source of the work is not available for anyone |
|||
to copy, free of charge and under the terms of this License, through a |
|||
publicly available network server or other readily accessible means, |
|||
then you must either (1) cause the Corresponding Source to be so |
|||
available, or (2) arrange to deprive yourself of the benefit of the |
|||
patent license for this particular work, or (3) arrange, in a manner |
|||
consistent with the requirements of this License, to extend the patent |
|||
license to downstream recipients. "Knowingly relying" means you have |
|||
actual knowledge that, but for the patent license, your conveying the |
|||
covered work in a country, or your recipient's use of the covered work |
|||
in a country, would infringe one or more identifiable patents in that |
|||
country that you have reason to believe are valid. |
|||
|
|||
If, pursuant to or in connection with a single transaction or |
|||
arrangement, you convey, or propagate by procuring conveyance of, a |
|||
covered work, and grant a patent license to some of the parties |
|||
receiving the covered work authorizing them to use, propagate, modify |
|||
or convey a specific copy of the covered work, then the patent license |
|||
you grant is automatically extended to all recipients of the covered |
|||
work and works based on it. |
|||
|
|||
A patent license is "discriminatory" if it does not include within |
|||
the scope of its coverage, prohibits the exercise of, or is |
|||
conditioned on the non-exercise of one or more of the rights that are |
|||
specifically granted under this License. You may not convey a covered |
|||
work if you are a party to an arrangement with a third party that is |
|||
in the business of distributing software, under which you make payment |
|||
to the third party based on the extent of your activity of conveying |
|||
the work, and under which the third party grants, to any of the |
|||
parties who would receive the covered work from you, a discriminatory |
|||
patent license (a) in connection with copies of the covered work |
|||
conveyed by you (or copies made from those copies), or (b) primarily |
|||
for and in connection with specific products or compilations that |
|||
contain the covered work, unless you entered into that arrangement, |
|||
or that patent license was granted, prior to 28 March 2007. |
|||
|
|||
Nothing in this License shall be construed as excluding or limiting |
|||
any implied license or other defenses to infringement that may |
|||
otherwise be available to you under applicable patent law. |
|||
|
|||
12. No Surrender of Others' Freedom. |
|||
|
|||
If conditions are imposed on you (whether by court order, agreement or |
|||
otherwise) that contradict the conditions of this License, they do not |
|||
excuse you from the conditions of this License. If you cannot convey a |
|||
covered work so as to satisfy simultaneously your obligations under this |
|||
License and any other pertinent obligations, then as a consequence you may |
|||
not convey it at all. For example, if you agree to terms that obligate you |
|||
to collect a royalty for further conveying from those to whom you convey |
|||
the Program, the only way you could satisfy both those terms and this |
|||
License would be to refrain entirely from conveying the Program. |
|||
|
|||
13. Use with the GNU Affero General Public License. |
|||
|
|||
Notwithstanding any other provision of this License, you have |
|||
permission to link or combine any covered work with a work licensed |
|||
under version 3 of the GNU Affero General Public License into a single |
|||
combined work, and to convey the resulting work. The terms of this |
|||
License will continue to apply to the part which is the covered work, |
|||
but the special requirements of the GNU Affero General Public License, |
|||
section 13, concerning interaction through a network will apply to the |
|||
combination as such. |
|||
|
|||
14. Revised Versions of this License. |
|||
|
|||
The Free Software Foundation may publish revised and/or new versions of |
|||
the GNU General Public License from time to time. Such new versions will |
|||
be similar in spirit to the present version, but may differ in detail to |
|||
address new problems or concerns. |
|||
|
|||
Each version is given a distinguishing version number. If the |
|||
Program specifies that a certain numbered version of the GNU General |
|||
Public License "or any later version" applies to it, you have the |
|||
option of following the terms and conditions either of that numbered |
|||
version or of any later version published by the Free Software |
|||
Foundation. If the Program does not specify a version number of the |
|||
GNU General Public License, you may choose any version ever published |
|||
by the Free Software Foundation. |
|||
|
|||
If the Program specifies that a proxy can decide which future |
|||
versions of the GNU General Public License can be used, that proxy's |
|||
public statement of acceptance of a version permanently authorizes you |
|||
to choose that version for the Program. |
|||
|
|||
Later license versions may give you additional or different |
|||
permissions. However, no additional obligations are imposed on any |
|||
author or copyright holder as a result of your choosing to follow a |
|||
later version. |
|||
|
|||
15. Disclaimer of Warranty. |
|||
|
|||
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY |
|||
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT |
|||
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY |
|||
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, |
|||
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
|||
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM |
|||
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF |
|||
ALL NECESSARY SERVICING, REPAIR OR CORRECTION. |
|||
|
|||
16. Limitation of Liability. |
|||
|
|||
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING |
|||
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS |
|||
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY |
|||
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE |
|||
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF |
|||
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD |
|||
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), |
|||
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF |
|||
SUCH DAMAGES. |
|||
|
|||
17. Interpretation of Sections 15 and 16. |
|||
|
|||
If the disclaimer of warranty and limitation of liability provided |
|||
above cannot be given local legal effect according to their terms, |
|||
reviewing courts shall apply local law that most closely approximates |
|||
an absolute waiver of all civil liability in connection with the |
|||
Program, unless a warranty or assumption of liability accompanies a |
|||
copy of the Program in return for a fee. |
|||
|
|||
END OF TERMS AND CONDITIONS |
|||
|
|||
How to Apply These Terms to Your New Programs |
|||
|
|||
If you develop a new program, and you want it to be of the greatest |
|||
possible use to the public, the best way to achieve this is to make it |
|||
free software which everyone can redistribute and change under these terms. |
|||
|
|||
To do so, attach the following notices to the program. It is safest |
|||
to attach them to the start of each source file to most effectively |
|||
state the exclusion of warranty; and each file should have at least |
|||
the "copyright" line and a pointer to where the full notice is found. |
|||
|
|||
<one line to give the program's name and a brief idea of what it does.> |
|||
Copyright (C) <year> <name of author> |
|||
|
|||
This program is free software: you can redistribute it and/or modify |
|||
it under the terms of the GNU General Public License as published by |
|||
the Free Software Foundation, either version 3 of the License, or |
|||
(at your option) any later version. |
|||
|
|||
This program is distributed in the hope that it will be useful, |
|||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
|||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|||
GNU General Public License for more details. |
|||
|
|||
You should have received a copy of the GNU General Public License |
|||
along with this program. If not, see <http://www.gnu.org/licenses/>. |
|||
|
|||
Also add information on how to contact you by electronic and paper mail. |
|||
|
|||
If the program does terminal interaction, make it output a short |
|||
notice like this when it starts in an interactive mode: |
|||
|
|||
<program> Copyright (C) <year> <name of author> |
|||
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. |
|||
This is free software, and you are welcome to redistribute it |
|||
under certain conditions; type `show c' for details. |
|||
|
|||
The hypothetical commands `show w' and `show c' should show the appropriate |
|||
parts of the General Public License. Of course, your program's commands |
|||
might be different; for a GUI interface, you would use an "about box". |
|||
|
|||
You should also get your employer (if you work as a programmer) or school, |
|||
if any, to sign a "copyright disclaimer" for the program, if necessary. |
|||
For more information on this, and how to apply and follow the GNU GPL, see |
|||
<http://www.gnu.org/licenses/>. |
|||
|
|||
The GNU General Public License does not permit incorporating your program |
|||
into proprietary programs. If your program is a subroutine library, you |
|||
may consider it more useful to permit linking proprietary applications with |
|||
the library. If this is what you want to do, use the GNU Lesser General |
|||
Public License instead of this License. But first, please read |
|||
<http://www.gnu.org/philosophy/why-not-lgpl.html>. |
|||
@ -0,0 +1,184 @@ |
|||
TABLE 1. GLOSSARY OF "HIGH LEVEL" WORDS |
|||
(files CAMEL80D.AZM and CAMEL80H.AZM) |
|||
|
|||
NAME stack in -- stack out description |
|||
|
|||
Guide to stack diagrams: R: = return stack, |
|||
c = 8-bit character, flag = boolean (0 or -1), |
|||
n = signed 16-bit, u = unsigned 16-bit, |
|||
d = signed 32-bit, ud = unsigned 32-bit, |
|||
+n = unsigned 15-bit, x = any cell value, |
|||
i*x j*x = any number of cell values, |
|||
a-addr = aligned adrs, c-addr = character adrs |
|||
p-addr = I/O port adrs, sys = system-specific. |
|||
Refer to ANS Forth document for more details. |
|||
|
|||
ANS Forth Core words |
|||
These are required words whose definitions are |
|||
specified by the ANS Forth document. |
|||
|
|||
# ud1 -- ud2 convert 1 digit of output |
|||
#S ud1 -- ud2 convert remaining digits |
|||
#> ud1 -- c-addr u end conv., get string |
|||
' -- xt find word in dictionary |
|||
( -- skip input until ) |
|||
* n1 n2 -- n3 signed multiply |
|||
*/ n1 n2 n3 -- n4 n1*n2/n3 |
|||
*/MOD n1 n2 n3 -- n4 n5 n1*n2/n3, rem & quot |
|||
+LOOP adrs -- L: 0 a1 a2 .. aN -- |
|||
, x -- append cell to dict |
|||
/ n1 n2 -- n3 signed divide |
|||
/MOD n1 n2 -- n3 n4 signed divide, rem & quot |
|||
: -- begin a colon definition |
|||
; end a colon definition |
|||
<# -- begin numeric conversion |
|||
>BODY xt -- a-addr adrs of param field |
|||
>IN -- a-addr holds offset into TIB |
|||
>NUMBER ud adr u -- ud' adr' u' |
|||
convert string to number |
|||
2DROP x1 x2 -- drop 2 cells |
|||
2DUP x1 x2 -- x1 x2 x1 x2 dup top 2 cells |
|||
2OVER x1 x2 x3 x4 -- x1 x2 x3 x4 x1 x2 per diag |
|||
2SWAP x1 x2 x3 x4 -- x3 x4 x1 x2 per diagram |
|||
2! x1 x2 a-addr -- store 2 cells |
|||
2@ a-addr -- x1 x2 fetch 2 cells |
|||
ABORT i*x -- R: j*x -- clear stack & QUIT |
|||
ABORT" i*x 0 -- i*x R: j*x -- j*x print msg & |
|||
i*x x1 -- R: j*x -- abort,x1<>0 |
|||
ABS n1 -- +n2 absolute value |
|||
ACCEPT c-addr +n -- +n' get line from terminal |
|||
ALIGN -- align HERE |
|||
ALIGNED addr -- a-addr align given addr |
|||
ALLOT n -- allocate n bytes in dict |
|||
BASE -- a-addr holds conversion radix |
|||
BEGIN -- adrs target for backward branch |
|||
BL -- char an ASCII space |
|||
C, char -- append char to dict |
|||
CELLS n1 -- n2 cells->adrs units |
|||
CELL+ a-addr1 -- a-addr2 add cell size to adrs |
|||
CHAR -- char parse ASCII character |
|||
CHARS n1 -- n2 chars->adrs units |
|||
CHAR+ c-addr1 -- c-addr2 add char size to adrs |
|||
COUNT c-addr1 -- c-addr2 u counted->adr/len |
|||
CR -- output newline |
|||
CREATE -- create an empty definition |
|||
DECIMAL -- set number base to decimal |
|||
DEPTH -- +n number of items on stack |
|||
DO -- adrs L: -- 0 start of DO..LOOP |
|||
DOES> -- change action of latest def'n |
|||
ELSE adrs1 -- adrs2 branch for IF..ELSE |
|||
ENVIRONMENT? c-addr u -- false system query |
|||
EVALUATE i*x c-addr u -- j*x interpret string |
|||
FIND c-addr -- c-addr 0 ..if name not found |
|||
xt 1 ..if immediate |
|||
xt -1 ..if "normal" |
|||
FM/MOD d1 n1 -- n2 n3 floored signed division |
|||
HERE -- addr returns dictionary pointer |
|||
HOLD char -- add char to output string |
|||
IF -- adrs conditional forward branch |
|||
IMMEDIATE -- make last def'n immediate |
|||
LEAVE -- L: -- adrs exit DO..LOOP |
|||
LITERAL x -- append numeric literal to dict. |
|||
LOOP adrs -- L: 0 a1 a2 .. aN -- |
|||
MAX n1 n2 -- n3 signed maximum |
|||
MIN n1 n2 -- n3 signed minimum |
|||
MOD n1 n2 -- n3 signed remainder |
|||
MOVE addr1 addr2 u -- smart move |
|||
M* n1 n2 -- d signed 16*16->32 multiply |
|||
POSTPONE -- postpone compile action of word |
|||
QUIT -- R: i*x -- interpret from keyboard |
|||
RECURSE -- recurse current definition |
|||
REPEAT adrs1 adrs2 -- resolve WHILE loop |
|||
SIGN n -- add minus sign if n<0 |
|||
SM/REM d1 n1 -- n2 n3 symmetric signed division |
|||
SOURCE -- adr n current input buffer |
|||
SPACE -- output a space |
|||
SPACES n -- output n spaces |
|||
STATE -- a-addr holds compiler state |
|||
S" -- compile in-line string |
|||
." -- compile string to print |
|||
S>D n -- d single -> double precision |
|||
THEN adrs -- resolve forward branch |
|||
TYPE c-addr +n -- type line to terminal |
|||
UNTIL adrs -- conditional backward branch |
|||
U. u -- display u unsigned |
|||
. n -- display n signed |
|||
WHILE -- adrs branch for WHILE loop |
|||
WORD char -- c-addr n parse word delim by char |
|||
[ -- enter interpretive state |
|||
[CHAR] -- compile character literal |
|||
['] -- find word & compile as literal |
|||
] -- enter compiling state |
|||
|
|||
ANS Forth Extensions |
|||
These are optional words whose definitions are |
|||
specified by the ANS Forth document. |
|||
|
|||
.S -- print stack contents |
|||
/STRING a u n -- a+n u-n trim string |
|||
AGAIN adrs -- uncond'l backward branch |
|||
COMPILE, xt -- append execution token |
|||
DABS d1 -- +d2 absolute value, dbl.prec. |
|||
DNEGATE d1 -- d2 negate, double precision |
|||
HEX -- set number base to hex |
|||
PAD -- a-addr user PAD buffer |
|||
TIB -- a-addr Terminal Input Buffer |
|||
WITHIN n1|u1 n2|u2 n3|u3 -- f test n2<=n1<n3? |
|||
WORDS -- list all words in dict. |
|||
|
|||
Private Extensions |
|||
These are words which are unique to CamelForth. |
|||
Many of these are necessary to implement ANS |
|||
Forth words, but are not specified by the ANS |
|||
document. Others are functions I find useful. |
|||
|
|||
!CF adrs cfa -- set code action of a word |
|||
!COLON -- change code field to docolon |
|||
!DEST dest adrs -- change a branch dest'n |
|||
#INIT -- n #bytes of user area init data |
|||
'SOURCE -- a-addr two cells: len, adrs |
|||
(DOES>) -- run-time action of DOES> |
|||
(S") -- c-addr u run-time code for S" |
|||
,BRANCH xt -- append a branch instruction |
|||
,CF adrs -- append a code field |
|||
,DEST dest -- append a branch address |
|||
,EXIT -- append hi-level EXIT action |
|||
>COUNTED src n dst -- copy to counted str |
|||
>DIGIT n -- c convert to 0..9A..Z |
|||
>L x -- L: -- x move to Leave stack |
|||
?ABORT f c-addr u -- abort & print msg |
|||
?DNEGATE d1 n -- d2 negate d1 if n negative |
|||
?NEGATE n1 n2 -- n3 negate n1 if n2 negative |
|||
?NUMBER c-addr -- n -1 convert string->number |
|||
-- c-addr 0 if convert error |
|||
?SIGN adr n -- adr' n' f get optional sign |
|||
advance adr/n if sign; return NZ if negative |
|||
CELL -- n size of one cell |
|||
COLD -- cold start Forth system |
|||
COMPILE -- append inline execution token |
|||
DIGIT? c -- n -1 ..if c is a valid digit |
|||
-- x 0 ..otherwise |
|||
DP -- a-addr holds dictionary ptr |
|||
ENDLOOP adrs xt -- L: 0 a1 a2 .. aN -- |
|||
HIDE -- "hide" latest definition |
|||
HP -- a-addr HOLD pointer |
|||
IMMED? nfa -- f fetch immediate flag |
|||
INTERPRET i*x c-addr u -- j*x |
|||
interpret given buffer |
|||
L0 -- a-addr bottom of Leave stack |
|||
LATEST -- a-addr last word in dictionary |
|||
LP -- a-addr Leave-stack pointer |
|||
L> -- x L: x -- move from Leave stack |
|||
NFA>CFA nfa -- cfa name adr -> code field |
|||
NFA>LFA nfa -- lfa name adr -> link field |
|||
R0 -- a-addr end of return stack |
|||
REVEAL -- "reveal" latest definition |
|||
S0 -- a-addr end of parameter stack |
|||
TIBSIZE -- n size of TIB |
|||
U0 -- a-addr current user area adrs |
|||
UD* ud1 d2 -- ud3 32*16->32 multiply |
|||
UD/MOD ud1 u2 -- u3 ud4 32/16->32 divide |
|||
UINIT -- addr initial values for user area |
|||
UMAX u1 u2 -- u unsigned maximum |
|||
UMIN u1 u2 -- u unsigned minimum |
|||
|
|||
@ -0,0 +1,112 @@ |
|||
TABLE 1. GLOSSARY OF WORDS IN CAMEL80.AZM |
|||
Words which are (usually) written in CODE. |
|||
|
|||
NAME stack in -- stack out description |
|||
|
|||
Guide to stack diagrams: R: = return stack, |
|||
c = 8-bit character, flag = boolean (0 or -1), |
|||
n = signed 16-bit, u = unsigned 16-bit, |
|||
d = signed 32-bit, ud = unsigned 32-bit, |
|||
+n = unsigned 15-bit, x = any cell value, |
|||
i*x j*x = any number of cell values, |
|||
a-addr = aligned adrs, c-addr = character adrs |
|||
p-addr = I/O port adrs, sys = system-specific. |
|||
Refer to ANS Forth document for more details. |
|||
|
|||
ANS Forth Core words |
|||
These are required words whose definitions are |
|||
specified by the ANS Forth document. |
|||
|
|||
! x a-addr -- store cell in memory |
|||
+ n1/u1 n2/u2 -- n3/u3 add n1+n2 |
|||
+! n/u a-addr -- add cell to memory |
|||
- n1/u1 n2/u2 -- n3/u3 subtract n1-n2 |
|||
< n1 n2 -- flag test n1<n2, signed |
|||
= x1 x2 -- flag test x1=x2 |
|||
> n1 n2 -- flag test n1>n2, signed |
|||
>R x -- R: -- x push to return stack |
|||
?DUP x -- 0 | x x DUP if nonzero |
|||
@ a-addr -- x fetch cell from memory |
|||
0< n -- flag true if TOS negative |
|||
0= n/u -- flag return true if TOS=0 |
|||
1+ n1/u1 -- n2/u2 add 1 to TOS |
|||
1- n1/u1 -- n2/u2 subtract 1 from TOS |
|||
2* x1 -- x2 arithmetic left shift |
|||
2/ x1 -- x2 arithmetic right shift |
|||
AND x1 x2 -- x3 logical AND |
|||
CONSTANT n -- define a Forth constant |
|||
C! c c-addr -- store char in memory |
|||
C@ c-addr -- c fetch char from memory |
|||
DROP x -- drop top of stack |
|||
DUP x -- x x duplicate top of stack |
|||
EMIT c -- output character to console |
|||
EXECUTE i*x xt -- j*x execute Forth word 'xt' |
|||
EXIT -- exit a colon definition |
|||
FILL c-addr u c -- fill memory with char |
|||
I -- n R: sys1 sys2 -- sys1 sys2 |
|||
get the innermost loop index |
|||
INVERT x1 -- x2 bitwise inversion |
|||
J -- n R: 4*sys -- 4*sys |
|||
get the second loop index |
|||
KEY -- c get character from keyboard |
|||
LSHIFT x1 u -- x2 logical L shift u places |
|||
NEGATE x1 -- x2 two's complement |
|||
OR x1 x2 -- x3 logical OR |
|||
OVER x1 x2 -- x1 x2 x1 per stack diagram |
|||
ROT x1 x2 x3 -- x2 x3 x1 per stack diagram |
|||
RSHIFT x1 u -- x2 logical R shift u places |
|||
R> -- x R: x -- pop from return stack |
|||
R@ -- x R: x -- x fetch from rtn stk |
|||
SWAP x1 x2 -- x2 x1 swap top two items |
|||
UM* u1 u2 -- ud unsigned 16x16->32 mult. |
|||
UM/MOD ud u1 -- u2 u3 unsigned 32/16->16 div. |
|||
UNLOOP -- R: sys1 sys2 -- drop loop parms |
|||
U< u1 u2 -- flag test u1<n2, unsigned |
|||
VARIABLE -- define a Forth variable |
|||
XOR x1 x2 -- x3 logical XOR |
|||
|
|||
ANS Forth Extensions |
|||
These are optional words whose definitions are |
|||
specified by the ANS Forth document. |
|||
|
|||
<> x1 x2 -- flag test not equal |
|||
BYE i*x -- return to CP/M |
|||
CMOVE c-addr1 c-addr2 u -- move from bottom |
|||
CMOVE> c-addr1 c-addr2 u -- move from top |
|||
KEY? -- flag return true if char waiting |
|||
M+ d1 n -- d2 add single to double |
|||
NIP x1 x2 -- x2 per stack diagram |
|||
TUCK x1 x2 -- x2 x1 x2 per stack diagram |
|||
U> u1 u2 -- flag test u1>u2, unsigned |
|||
|
|||
Private Extensions |
|||
These are words which are unique to CamelForth. |
|||
Many of these are necessary to implement ANS |
|||
Forth words, but are not specified by the ANS |
|||
document. Others are functions I find useful. |
|||
|
|||
(do) n1|u1 n2|u2 -- R: -- sys1 sys2 |
|||
run-time code for DO |
|||
(loop) R: sys1 sys2 -- | sys1 sys2 |
|||
run-time code for LOOP |
|||
(+loop) n -- R: sys1 sys2 -- | sys1 sys2 |
|||
run-time code for +LOOP |
|||
>< x1 -- x2 swap bytes |
|||
?branch x -- branch if TOS zero |
|||
BDOS DE C -- A call CP/M BDOS |
|||
branch -- branch always |
|||
lit -- x fetch inline literal to stack |
|||
PC! c p-addr -- output char to port |
|||
PC@ p-addr -- c input char from port |
|||
RP! a-addr -- set return stack pointer |
|||
RP@ -- a-addr get return stack pointer |
|||
SCAN c-addr1 u1 c -- c-addr2 u2 |
|||
find matching char |
|||
SKIP c-addr1 u1 c -- c-addr2 u2 |
|||
skip matching chars |
|||
SP! a-addr -- set data stack pointer |
|||
SP@ -- a-addr get data stack pointer |
|||
S= c-addr1 c-addr2 u -- n string compare |
|||
n<0: s1<s2, n=0: s1=s2, n>0: s1>s2 |
|||
USER n -- define user variable 'n' |
|||
|
|||
@ -0,0 +1,166 @@ |
|||
CAMELFORTH FOR THE Z80 - BETA TEST VERSION - 16 APRIL 1995 |
|||
========================================================== |
|||
|
|||
This is a BETA TEST version of CamelForth/80, an ANSI Standard Forth for |
|||
the Zilog Z80 microprocessor and the CP/M operating system. This means |
|||
that, although I have tested the bulk of this code for correct |
|||
functioning, and have fixed several bugs, you may discover new bugs. |
|||
I'd appreciate hearing of any such, either |
|||
|
|||
by Internet: bj@camelforth.com |
|||
|
|||
I'll also answer questions and try to solve problems. |
|||
|
|||
* * * |
|||
|
|||
As distributed, CamelForth will assemble to run under CP/M 2.x. It |
|||
determines the highest available RAM location from CP/M, and places its |
|||
data areas (stacks, user area, etc.) immediately below that. The |
|||
CamelForth program resides in the bottom of the CP/M program area |
|||
(100h), and any user definitions are added immediately after. CP/M's |
|||
default command buffer at 80h is used for the Terminal Input Buffer. |
|||
|
|||
To start CamelForth under CP/M, type the command |
|||
|
|||
CAMEL80 ...any Forth commands... |
|||
|
|||
CamelForth will execute the rest of the CP/M command line as a Forth |
|||
statement, and then enter the Forth interpreter. To return to CP/M, use |
|||
the command |
|||
|
|||
BYE |
|||
|
|||
Note that CamelForth is CASE SENSITIVE, and all Forth words are in UPPER |
|||
CASE. |
|||
|
|||
MODIFICATION FOR STANDALONE USE |
|||
|
|||
CamelForth can be easily assembled for a standalone or embedded Z80. |
|||
About 6K of PROM and 640 bytes of RAM are used by CamelForth, plus |
|||
whatever additional PROM and RAM is needed by your program. You will |
|||
probably need to provide the Z80 reset vector, e.g. |
|||
|
|||
org 0 |
|||
jp reset |
|||
|
|||
You must also add any required hardware initialization, and the Forth |
|||
words KEY KEY? and EMIT for your hardware. You should modify the |
|||
'reset' routine to use an equate for end of RAM, e.g. |
|||
|
|||
reset: ld hl,ramend ; end of available memory (EM) |
|||
dec h ; EM-100h |
|||
ld sp,hl ; = top of param stack |
|||
inc h ; EM |
|||
etc. |
|||
|
|||
If you are putting CamelForth in PROM, but want to have a Forth |
|||
dictionary in RAM (so you can add new definitions), you'll have to |
|||
change the 'enddict' equate (at the end of camel80.azm) to the your |
|||
starting RAM address. Do NOT change the 'lastword' equate. |
|||
|
|||
The Terminal Input Buffer must be moved to a new location in RAM. The |
|||
usual CamelForth usage is 80h bytes below the user area. TIB can be |
|||
redefined as |
|||
|
|||
;X tib -- a-addr Terminal Input Buffer |
|||
; HEX -80 USER TIB below user area |
|||
head TIB,3,TIB,douser |
|||
dw -80h |
|||
|
|||
You should also delete the line |
|||
|
|||
DW LIT,80h,COUNT,INTERPRET |
|||
|
|||
from the routine COLD. This line causes the CP/M command "tail" to be |
|||
executed as a Forth command...inapplicable in a standalone system. |
|||
|
|||
* * * |
|||
|
|||
This program was written using the Z80MR macro assembler under CP/M. |
|||
Z80MR is a freeware assembler, available from GEnie and several other |
|||
CP/M archives. Assemble the CamelForth source files with the commands |
|||
|
|||
z80mr camel80 |
|||
load camel80 |
|||
|
|||
Z80MR produces an Intel hex file camel80.hex, and LOAD generates the |
|||
file camel80.com. (Note: do NOT use the version of Z80MR that directly |
|||
outputs a .COM file; that version of the assembler has bugs.) For |
|||
embedded applications you probably can skip the LOAD, since most PROM |
|||
programmers, PROM emulators, and debug programs will accept Intel hex |
|||
files. |
|||
|
|||
If you don't have CP/M, you can use the MYZ80 emulator on an IBM PC, or |
|||
you can rewrite the source code for your Z80 macro assembler. |
|||
|
|||
There are TWO WAYS to write embedded programs in CamelForth: |
|||
|
|||
1. If you have CamelForth running on an embedded Z80, you can download |
|||
Forth code directly to CamelForth. This lets you type new words from |
|||
the keyboard, test them as they are defined, and re-define them to make |
|||
changes. Or you can edit an ASCII text file, and use a program such as |
|||
Procomm to send this file over the serial port to your Z80. It can take |
|||
a few seconds to compile each line, so be sure to leave plenty of delay |
|||
after the line. (I'm working on handshaking to improve this.) Also be |
|||
sure that no line exceeds 80 characters. |
|||
|
|||
2. If you you want to burn your program into PROM, you can add your code |
|||
to the file CAMEL80.ASM. (I recommend creating a separate file and |
|||
using the *INCLUDE directive.) This requires you to convert your Forth |
|||
code to assembler code. To show how this is done, every high-level |
|||
Forth word in the file is shown with its equivalent Forth code in a |
|||
comment. Be especially careful with control structures (IF..ELSE..THEN, |
|||
BEGIN..UNTIL, DO..LOOP, and the like), and with the Forth word headers. |
|||
Reassemble CAMEL80.AZM and burn a PROM (or download to a PROM emulator |
|||
or debug monitor), then test. This is a much slower process, and is |
|||
best saved for the final stage when you have a tested & debugged program |
|||
that you want to put in PROM. |
|||
|
|||
Disk I/O is not yet supported under CP/M. However, CamelForth v1.2 will |
|||
accept commands from a CP/M SUBMIT file using the XSUB utility. The |
|||
SUBMIT file should contain the commands |
|||
|
|||
XSUB |
|||
CAMEL80 |
|||
...Forth source code... |
|||
|
|||
This will run CamelForth/80 under XSUB, which will feed the rest of the |
|||
file to CamelForth as terminal input. You can automatically return to |
|||
CP/M by putting the CamelForth BYE command in the file. Then you can |
|||
save the modified CamelForth image with the CP/M command |
|||
|
|||
SAVE nn CAMELNEW.COM |
|||
|
|||
'nn' is the decimal number of pages occupied by the CamelForth |
|||
dictionary. You can determine this value while in CamelForth with the |
|||
statement |
|||
|
|||
DECIMAL HERE 0 256 UM/MOD NIP . |
|||
|
|||
Unfortunately, at the moment there's no way to totally automate this as |
|||
part of the SUBMIT file. And I'm reluctant to add SAVE to CamelForth |
|||
when CP/M has a perfectly good SAVE command. |
|||
|
|||
* * * |
|||
|
|||
--------------------------- LICENSE TERMS ------------------------------ |
|||
CamelForth for the Zilog Z80 Copyright 1994,1995 Bradford J. Rodriguez. |
|||
|
|||
This program is free software; you can redistribute it and/or modify |
|||
it under the terms of the GNU General Public License as published by |
|||
the Free Software Foundation; either version 3 of the License, or |
|||
(at your option) any later version. |
|||
|
|||
This program is distributed in the hope that it will be useful, |
|||
but WITHOUT ANY WARRANTY; without even the implied warranty of |
|||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|||
GNU General Public License for more details. |
|||
|
|||
You should have received a copy of the GNU General Public License |
|||
along with this program. If not, see <http://www.gnu.org/licenses/>. |
|||
|
|||
Commercial inquiries should be directed to the author at |
|||
115 First St., #105, Collingwood, Ontario L9Y 4W3 Canada |
|||
or via email to bj@camelforth.com |
|||
------------------------------------------------------------------------ |
|||
|
|||
Binary file not shown.
Loading…
Reference in new issue