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174 lines
4.3 KiB
174 lines
4.3 KiB
; cpmbdos.lib 1/19/2012 dwg - add READ$CON$BUF (10)
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; cpmbdos.lib 1/15/2012 dwg - add more functions
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;
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; Copyright (C) 2011-2012 Douglas Goodall Licensed under GPL Ver 3.
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;
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; This file is part of NuBiosDWG and is free software: you can
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; redistribute it and/or modify it under the terms of the GNU
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; General Public License as published by the Free Software Foundation,
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; either version 3 of the License, or (at your option) any later version.
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; This file 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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; You should have received a copy of the GNU General Public License
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; along with it. If not, see <http://www.gnu.org/licenses/>.
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;
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; BDOS function codes
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TERMCPM equ 0 ; return to command line
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CREAD equ 1 ; read a character
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CWRITE equ 2 ; write a character
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PRINTSTR equ 9 ; print string
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READ$CON$BUF equ 10 ; read console buffer
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RETVERNO equ 12 ; return version number
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DSKRESET equ 13 ; disk reset
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SELDSK equ 14 ; select disk
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FOPEN equ 15 ; open file
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FCLOSE equ 16 ; close file
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FDELETE equ 19 ; delete file
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READSEQ equ 20 ; read sequential
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WRITESEQ equ 21 ; write sequential
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FMAKE equ 22 ; make file
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FRENAME equ 23 ; rename file
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RETCURR equ 25 ; return current disk, 0=a
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SETDMA equ 26 ; set dma address
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WRITERAND equ 34 ; write random record
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FCOMPSIZE equ 35 ; compute file size
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SETRANDREC equ 36 ; set random record
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RESETDRIVE equ 37 ; reset drive
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WRITERANDZF equ 40 ; write random with zero fill
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OEMID equ 0E5h
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; File Control Block
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DR$OFS equ 0
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F1$OFS equ DR$OFS+BYTESIZE
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F2$OFS equ F1$OFS+BYTESIZE
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F3$OFS equ F2$OFS+BYTESIZE
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F4$OFS equ F3$OFS+BYTESIZE
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F5$OFS equ F4$OFS+BYTESIZE
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F6$OFS equ F5$OFS+BYTESIZE
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F7$OFS equ F6$OFS+BYTESIZE
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F8$OFS equ F7$OFS+BYTESIZE
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T1$OFS equ F8$OFS+BYTESIZE
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T2$OFS equ T1$OFS+BYTESIZE
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T3$OFS equ T2$OFS+BYTESIZE
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EX$OFS equ T3$OFS+BYTESIZE
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S1$OFS equ EX$OFS+BYTESIZE
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S2$OFS equ S1$OFS+BYTESIZE
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RC$OFS equ S2$OFS+BYTESIZE
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D0$OFS equ RC$OFS+BYTESIZE
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CR$OFS equ DR$OFS+32
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R0$OFS equ CR$OFS+BYTESIZE
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R1$OFS equ R0$OFS+BYTESIZE
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R2$OFS equ R1$OFS+BYTESIZE
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FCB$LEN equ R2$OFS+BYTESIZE
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; Memory Locations
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BDOS equ 5 ; entry point fo BDOS function calls
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PRIFCB equ 5Ch ; primary file control block address
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SECFCB equ 6Ch ; secondary file control block address
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LENFCB equ 32 ; length of file control block
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DEFBUF equ 80h ; address of default buffer
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EXIT macro
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mvi c,TERMCPM
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call BDOS
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endm
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conin macro
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push b ; save context B&C
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push d ; save context D&E
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push h ; save context H&L
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mvi c,CREAD ; set up for console input BDOS call
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call BDOS ; call BDOS function entry point
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pop h ; restore context H&L
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pop d ; restore context D&E
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pop b ; restore context B&C
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endm
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conout macro char
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enter ; save all context regs
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mvi c,CWRITE ; set for console output BDOS call
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mvi e,char ; place output character in E as required
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call bdos ; call BDOS function entry point
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leave ; restore all context regs
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endm
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conouta macro
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enter
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mvi c,CWRITE
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mov e,a
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call bdos
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leave
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endm
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PRINT macro addr
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enter
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mvi c,PRINTSTR
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lxi d,addr
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call BDOS
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leave
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endm
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PTRPRT macro addr
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enter ; save all context registers
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lxi h,addr ; load the address parameter into H&L
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mov e,m ; pick up LO byte of new pointer
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inx h ; bump index register
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mov d,m ; pick up HO byte of new pointer
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mvi c,PRINTSTR ; assembled pointer used for printstring call
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call BDOS
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leave ; restore all context registers
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endm
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movfcb macro destn,source
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lxi d,destn
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lxi h,source
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lxi b,LENFCB
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ldir
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endm
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copyfcb macro fcbname,source
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local around
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jmp around
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fcbname ds 32
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around:
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endm
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printf macro parmdata
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local around
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local string
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print string
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jmp around
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string db parmdata
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db '$'
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around:
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endm
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printmsg macro parmdata
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enter
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local around
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local string
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print string
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jmp around
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string db parmdata
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db '$'
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around:
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leave
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endm
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newfcb macro fcbname,drive,filename
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fcbname db drive,filename
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db 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
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endm
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; eof - cpmbdos.lib
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