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https://github.com/wwarthen/RomWBW.git
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Fix SURVEY.COM (again)
- Previous fix to SURVEY.COM port survey broke the memory survey. Everything should be OK now. - Regenerated documentation.
This commit is contained in:
Wayne Warthen
@@ -15,6 +15,13 @@
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;
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;VERSION LIST - Most recent version first.
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;
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;21/Mar/23 - Previous hack was worthless because it broke
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; the memory survey. Rehacked to use HBIOS to
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; detect if N8VEM SBC MPCL memory management is
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; in use and bypass MPCL ports if so. HBIOS check
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; should allow use in non-RomWBW systems again.
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; Wayne Warthen
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;
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;10/Feb/23 - Total hack to avoid crash on ECB SBC
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; RomWBW now required by this version
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; Wayne Warthen
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@@ -240,20 +247,6 @@ TABS EQU 9 ; Tab columns
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;
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;ORG 100H
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;
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;
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;
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.Z80
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LD HL,IMGORG
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LD DE,START
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LD BC,IMGEND-IMGORG
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LDIR
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JP START
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.8080
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;
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IMGORG:
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;
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.PHASE 8000H
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;
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START:
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LXI H,0 ; Save stack pointer
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DAD SP
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@@ -261,9 +254,38 @@ START:
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LXI SP,FINIS+64
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CALL TYPE ; Type initial CRLF
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DW CRLF,CRLF
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DB TAB,'*** RomWBW System Survey (Feb 2023) ***'
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DB TAB,'*** RomWBW System Survey (Mar 2023) ***'
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DW CRLF,CRLFE
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;
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; Are we running an N8VEM SBC w/ MPCL on RomWBW???
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;
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.Z80
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XOR A ; assume not
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LD (ISMPCL),A ; save it
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; Check for RomWBW (HBIOS)
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LD HL,(0FFFEH) ; HL := HBIOS ident location
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LD A,'W' ; First byte of ident
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CP (HL) ; Compare
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JR NZ,NOTMPCL ; Not HBIOS
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INC HL ; Next byte of ident
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LD A,NOT 'W' ; Second byte of ident
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CP (HL) ; Compare
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JR NZ,NOTMPCL ; Not HBIOS
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;
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LD B,0F1H ; HBIOS: VER function
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LD C,0 ; required reserved value
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RST 08 ; DE := version, L := platform id
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LD A,L ; Platform ID
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CP 01H ; SBC?
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JR NZ,NOTMPCL ; Not SBC
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LD A,0FFH ; Flag
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LD (ISMPCL),A ; Set flag
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;
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.8080
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;
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NOTMPCL:
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;
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;DISK SURVEY
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LXI H,8 ; Init drive counter
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MVI C,24 ; Get login vector
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@@ -445,20 +467,19 @@ MSURV:
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ENDM
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DB '|'
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DW CRLF
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db ' ' ; dmb 31-May-82
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DB 'T'+EOL
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DB 'TT','T'+EOL
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LXI H,RAM
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MVI M,LOW 1023 ; Init RAM counter
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MVI M,LOW 2047 ; Init RAM counter
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INX H
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MVI M,HIGH 1023
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MVI M,HIGH 2047
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MVI B,4 ; Clear ROM, EMP
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CLREG:
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INX H
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MVI M,0
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DCR B
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JNZ CLREG
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LXI H,1024 ; Init memory pointer
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MVI C,63 ; K to be checked
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LXI H,2048 ; Init memory pointer
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MVI C,62 ; K to be checked
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;Start of analysis loop
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BEGANA:
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@@ -492,7 +513,7 @@ NOTEM:
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INXI ROM
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NEXT:
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INX H ; Index next byte
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DCX D ; Decrement K counter
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DCX D ; DEC DE; Decrement K counter
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XRA A
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ORA D
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ORA E
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@@ -545,8 +566,19 @@ NEXTK:
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; contents of first page
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call type
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db 'BIOS at',' '+eol
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hexout bios+2
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hexout bios+1
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;hexout bios+2
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;hexout bios+1
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.z80
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ld hl,(bios+1)
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ld de,-3
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add hl,de
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push hl
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ld a,h
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call hexprn
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pop hl
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ld a,l
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call hexprn
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.8080
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call type
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db tab,'iobyte',' '+eol
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hexout bios+3
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@@ -555,8 +587,19 @@ NEXTK:
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hexout bios+4
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call type
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db tab,'BDOS at',' '+eol
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hexout bdos+2
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hexout bdos+1
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;hexout bdos+2
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;hexout bdos+1
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.z80
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ld hl,(bdos+1)
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ld de,-6
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add hl,de
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push hl
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ld a,h
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call hexprn
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pop hl
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ld a,l
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call hexprn
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.8080
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call type
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dw crlf,crlfe
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;
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@@ -607,9 +650,6 @@ PDLY:
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JNZ PDLY
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;
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.Z80
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; record the active bank
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ld a,(0ffe0h) ; get current hbios bank id
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ld (BANK),a ; and save it
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; Check for Z180 CPU
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xor a ; assume Z80
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ld (IS180),a ; save it
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@@ -635,6 +675,17 @@ PORTLP:
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ENDIF
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;
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.Z80
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;
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ld a,(ISMPCL) ; MPCL?
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or a ; set flags
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jr z,PCONT ; if not, skip ahead
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ld a,d ; get port to test
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and 0F8H ; range of 8 ports
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cp 078H ; starting at 78H
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jr z,ISPORT ; if in range, assume real port
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;
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PCONT:
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di ; interrupts off
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ld a,(IS180) ; Z180?
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or a
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@@ -679,11 +730,6 @@ pnum1b equ $-1
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push af
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;
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rdz:
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; Make sure correct bank is still selected!
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push af
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ld a,(BANK)
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call 0FFF3H
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pop af
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;
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ei ; interrupts back on now
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;
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@@ -818,13 +864,9 @@ RAMF: DS 1 ; RAM good flag
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EMPF: DS 1 ; Empty so far flag
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BLKSHF: DS 1 ; block shift factor
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MAXALL: DS 2 ; maximum block number
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BANK: DS 1 ; saved HBIOS bank id
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IS180: DS 1 ; non-zero for Z180 CPU
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ISMPCL: DS 1 ; non-zero for N8VEM SBC MPCL
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FINIS EQU $ ; End of program
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;
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.DEPHASE
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;
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IMGEND:
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;
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END
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