Merge branch 'main' into main
This commit is contained in:
Bobbi Webber-Manners
GitHub
commit
859f491b16
BIN
applecorn.po
BIN
applecorn.po
Binary file not shown.
356
applecorn.s
356
applecorn.s
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@ -1,4 +1,4 @@
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* Load Acorn BBC Micro ROM into aux memory
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* Load an Acorn BBC Micro ROM in aux memory and
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* Provide an environment where it can run
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* Bobbi 2021
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@ -281,6 +281,79 @@ COPYAUXBLK
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LDA $C081
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RTS
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* ProDOS file handling for MOS OSFIND OPEN call
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OFILE LDX $0100 ; Recover SP
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TXS
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LDA $C081 ; ROM, please
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LDA $C081
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LDA #<MOSFILE
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STA OPENPL+1
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LDA #>MOSFILE
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STA OPENPL+2
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JSR OPENFILE
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BCS :NOTFND
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LDA OPENPL+5 ; File ref number
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PHA
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BRA FINDEXIT
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:NOTFND LDA #$00
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PHA
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FINDEXIT LDA $C08B ; R/W RAM, LC bank 1
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LDA $C08B
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LDA #<OSFINDRET
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STA STRTL
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LDA #>OSFINDRET
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STA STRTH
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PLA
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SEC
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BIT $FF58
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JMP XFER
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* ProDOS file handling for MOS OSFIND CLOSE call
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CFILE LDX $0100 ; Recover SP
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TXS
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LDA $C081 ; ROM, please
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LDA $C081
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LDA MOSFILE ; File ref number
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STA CLSPL+1
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JSR CLSFILE
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JMP FINDEXIT
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* ProDOS file handling for MOS OSBGET call
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FILEGET LDX $0100 ; Recover SP
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TXS
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LDA $C081 ; ROM, please
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LDA $C081
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LDA MOSFILE ; File ref number
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STA READPL1+1
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JSR MLI
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DB READCMD
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DW READPL1
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PHA
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* TODO HANDLE ERROR CASE WHERE C IS SET
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GETEXIT LDA $C08B ; R/W RAM, LC bank 1
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LDA $C08B
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LDA #<OSBGETRET
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STA STRTL
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LDA #>OSBGETRET
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STA STRTH
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PLA
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SEC
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BIT $FF58
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JMP XFER
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* ProDOS file handling for MOS OSBPUT call
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FILEPUT LDX $0100 ; Recover SP
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TXS
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LDA $C081 ; ROM, please
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LDA $C081
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JMP GETEXIT
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* ProDOS file handling for MOS OSFILE LOAD call
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* Return A=0 if successful
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* A=1 if file not found
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@ -650,6 +723,12 @@ READPL HEX 04 ; Number of parameters
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DW 512 ; Request count
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DW $0000 ; Trans count
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READPL1 HEX 04 ; Number of parameters
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DB #00 ; Reference number
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DW RDBUF ; Pointer to data buffer
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DW 1 ; Request count
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DW $0000 ; Trans count
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WRITEPL HEX 04 ; Number of parameters
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DB $01 ; Reference number
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DW RDBUF ; Pointer to data buffer
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@ -738,7 +817,7 @@ BGETV EQU $216 ; OSBGET vector
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BPUTV EQU $218 ; OSBPUT vector
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GBPBV EQU $21A ; OSGBPB vector
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FINDV EQU $21C ; OSFIND vector
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FSCV EQU $21E ; FSCV misc file ops
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MAGIC EQU $BC ; Arbitrary value
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MOSSHIM
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@ -838,55 +917,6 @@ INITPG2 LDA DEFVEC,X
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DEX
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BPL INITPG2
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; LDA #<MOSBRKHDLR
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; STA BRKV
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; LDA #>MOSBRKHDLR
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; STA BRKV+1
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; LDA #<CLIHND ; Initialize MOS vectors
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; STA CLIV
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; LDA #>CLIHND
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; STA CLIV+1
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; LDA #<BYTEHND
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; STA BYTEV
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; LDA #>BYTEHND
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; STA BYTEV+1
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; LDA #<WORDHND
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; STA WORDV
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; LDA #>WORDHND
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; STA WORDV+1
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; LDA #<WRCHHND
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; STA WRCHV
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; LDA #>WRCHHND
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; STA WRCHV+1
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; LDA #<RDCHHND
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; STA RDCHV
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; LDA #>RDCHHND
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; STA RDCHV+1
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; LDA #<FILEHND
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; STA FILEV
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; LDA #>FILEHND
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; STA FILEV+1
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; LDA #<ARGSHND
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; STA ARGSV
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; LDA #>ARGSHND
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; STA ARGSV+1
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; LDA #<BGETHND
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; STA BGETV
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; LDA #>BGETHND
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; STA BGETV+1
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; LDA #<BPUTHND
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; STA BPUTV
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; LDA #>BPUTHND
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; STA BPUTV+1
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; LDA #<GBPBHND
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; STA GBPBV
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; LDA #>GBPBHND
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; STA GBPBV+1
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; LDA #<FINDHND
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; STA FINDV
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; LDA #>FINDHND
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; STA FINDV+1
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LDA #<:HELLO
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LDY #>:HELLO
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JSR PRSTR
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@ -1024,37 +1054,143 @@ GSRDGO LDA #<OSREADM
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OSREADM ASC 'GSREAD.'
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DB $00
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FINDHND LDA #<OSFINDM
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LDY #>OSFINDM
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JMP PRSTR
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OSFINDM ASC 'OSFIND.'
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* OSFIND - open/close a file for byte access
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FINDHND PHX
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PHY
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PHA
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STX ZP1 ; Points to filename
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STY ZP1+1
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LDA STRTL ; Backup STRTL/STRTH
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STA TEMP1
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LDA STRTH
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STA TEMP2
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TSX ; Stash alt ZP
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STX $0101
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PLA
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PHA
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CMP #$00 ; A=$00 = close
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BEQ :CLOSE
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LDA #<MOSFILE+1
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STA ZP2
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LDA #>MOSFILE+1
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STA ZP2+1
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LDY #$00
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:L1 LDA (ZP1),Y
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STA $C004 ; Write main
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STA (ZP2),Y
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STA $C005 ; Write aux
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INY
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CMP #$0D ; Carriage return
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BNE :L1
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DEY
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STA $C004 ; Write main
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STY MOSFILE ; Length (Pascal string)
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STA $C005 ; Write aux
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LDA #<OFILE
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STA STRTL
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LDA #>OFILE
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STA STRTH
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:S1 CLC ; Use main memory
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CLV ; Use main ZP and LC
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JMP XFER
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:CLOSE STA $C004 ; Write main
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STY MOSFILE ; Write file number
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STA $C005 ; Write aux
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LDA #<CFILE
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STA STRTL
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LDA #>CFILE
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STA STRTH
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BRA :S1
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OSFINDRET
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LDX $0101 ; Recover alt SP from $0101
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TXS
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PHA ; Return value
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LDA TEMP1 ; Restore STRTL/STRTH
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STA STRTL
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LDA TEMP2
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STA STRTH
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PLA ; Return value
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PLY ; Value of A on entry
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CPY #$00 ; Was it close?
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BNE :S1
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TYA ; Preserve A for close
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:S1 PLY
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PLX
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RTS
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* OSFSC - miscellanous file system calls
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OSFSC LDA #<OSFSCM
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LDY #>OSFSCM
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JSR PRSTR
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RTS
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OSFSCM ASC 'OSFSC.'
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DB $00
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GBPBHND LDA #<OSGBPBM
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* OSGBPB - Get/Put a block of bytes to/from an open file
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GBPBHND LDA #<OSGBPBM
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LDY #>OSGBPBM
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JMP PRSTR
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OSGBPBM ASC 'OSGBPB.'
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DB $00
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BPUTHND LDA #<OSBPUTM
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LDY #>OSBPUTM
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JMP PRSTR
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OSBPUTM ASC 'OSBPUT.'
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DB $00
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* OSBPUT - write one byte to an open file
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BPUTHND LDA STRTL ; Backup STRTL/STRTH
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STA TEMP1
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LDA STRTH
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STA TEMP2
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LDA #<FILEPUT
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STA STRTL
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LDA #>FILEPUT
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STA STRTH
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TSX ; Stash alt SP in $0101
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STX $0101
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CLC ; Use main memory
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CLV ; Use main ZP and LC
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JMP XFER
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BGETHND LDA #<OSBGETM
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LDY #>OSBGETM
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JMP PRSTR
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OSBGETM ASC 'OSBGET.'
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DB $00
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* OSBGET - read one byte from an open file
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BGETHND LDA STRTL ; Backup STRTL/STRTH
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STA TEMP1
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LDA STRTH
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STA TEMP2
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STA $C004 ; Write to main memory
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STY MOSFILE ; File ref number
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STA $C005 ; Write to aux memory
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LDA #<FILEGET
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STA STRTL
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LDA #>FILEGET
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STA STRTH
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TSX ; Stash alt SP in $0101
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STX $0101
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CLC ; Use main memory
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CLV ; Use main ZP and LC
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JMP XFER
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OSBGETRET
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LDX $0101 ; Recover alt SP from $0101
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TXS
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PHA ; Return code
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LDA TEMP1 ; Recover STRTL/STRTH
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STA STRTL
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LDA TEMP2
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STA STRTH
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PLA ; Return code (ie: char read)
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RTS
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* OSARGS - adjust file arguments
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ARGSHND LDA #<OSARGSM
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LDY #>OSARGSM
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JMP PRSTR
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OSARGSM ASC 'OSARGS.'
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DB $00
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* MOS OSFILE HANDLER
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* OSFILE - perform actions on entire files
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* On entry, A=action
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* XY=>control block
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* On exit, A=preserved if unimplemented
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@ -1243,7 +1379,10 @@ RDCHHND PHX
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ROR $FF ; Set ESCFLG
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SEC ; Return CS
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RTS
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:S5 CLC
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:S5 LDA ESCFLAG
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ORA #$80
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STA ESCFLAG
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SEC
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RTS
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CURS DW $0000 ; Counter
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CSTATE DB $00 ; Cursor on or off
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@ -1323,7 +1462,6 @@ CURSRT LDA COL
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STZ COL
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:S2 RTS
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* OSWRCH handler
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* All registers preserved
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WRCHHND PHA
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@ -1361,7 +1499,6 @@ OUTCHAR CMP #$00 ; NULL
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CMP #23
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BEQ :SCROLL
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INC ROW
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JSR CLREOL
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:IDONE BRA :DONE
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:T5 CMP #$0B ; Cursor up
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BNE :T6
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@ -1454,6 +1591,18 @@ SCNTAB DW $800,$880,$900,$980,$A00,$A80,$B00,$B80
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WORDHND STX OSCTRL+0 ; Point to control block
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STY OSCTRL+1
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CMP #$00 ; OSWORD 0 read a line
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BNE :S01
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JMP OSWORD0
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:S01 CMP #$01 ; OSWORD 1 read system clock
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BNE :S02
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JMP OSWORD1
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:S02 CMP #$02 ; OSWORD 2 write system clock
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BNE :S05
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JMP OSWORD2
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:S05 CMP #$05 ; OSWORD 5 read I/O memory
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BNE :S06
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JMP OSWORD5
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:S06 CMP #$06 ; OSWORD 6 write I/O memory
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BNE :UNSUPP
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* OSRDLINE - Read a line of input
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@ -1515,6 +1664,9 @@ WORDHND STX OSCTRL+0 ; Point to control block
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:EXIT LDA ESCFLAG
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ROL
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RTS
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:MAXLEN DB $00
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:MINCH DB $00
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:MAXCH DB $00
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:UNSUPP PHA
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LDA #<:OSWORDM ; Unimplemented, print msg
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@ -1562,7 +1714,7 @@ BYTECALLER
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:S1 CMP #$7C ; $7C = clear escape condition
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BNE :S2
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LDA ESCFLAG
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AND #$7F ; Clear MSB
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AND #$7F ; Clear MSbit
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STA ESCFLAG
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RTS
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@ -1654,7 +1806,7 @@ CLIHND PHX
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JSR STRCMP
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BCS :S1
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JSR STARQUIT
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BRA :EXIT
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BRA :IEXIT
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:S1 LDA #<:CAT
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STA ZP2
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LDA #>:CAT
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@ -1662,7 +1814,7 @@ CLIHND PHX
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JSR STRCMP
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BCS :S2
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JSR STARCAT
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BRA :EXIT
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BRA :IEXIT
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:S2 LDA #<:CAT2
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||||
STA ZP2
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||||
LDA #>:CAT2
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|
@ -1678,18 +1830,44 @@ CLIHND PHX
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|||
JSR STRCMP
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BCS :S4
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JSR STARDIR
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BRA :EXIT
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||||
:IEXIT BRA :EXIT
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||||
:S4 LDA #<:HELP
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||||
STA ZP2
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||||
LDA #>:HELP
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STA ZP2+1
|
||||
JSR STRCMP
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||||
BCS :UNSUPP
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||||
BCS :S5
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||||
JSR STARHELP
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||||
BRA :EXIT
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||||
:UNSUPP LDA #<:OSCLIM
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||||
:S5 LDA #<:LISP ; HACK TO MAKE LISP WORK??
|
||||
STA ZP2
|
||||
LDA #>:LISP
|
||||
STA ZP2+1
|
||||
JSR STRCMP
|
||||
BCS :UNSUPP
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||||
LDA #$01
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||||
JMP $8000
|
||||
:UNSUPP
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||||
LDA #<:OSCLIM
|
||||
LDY #>:OSCLIM
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||||
JSR PRSTR
|
||||
PLY
|
||||
PLX
|
||||
STX ZP3
|
||||
STY ZP3+1
|
||||
LDY #$00
|
||||
:PL1 LDA (ZP3),Y
|
||||
CMP #$0D
|
||||
BEQ :PS1
|
||||
CMP #$00
|
||||
BEQ :PS1
|
||||
JSR $FFEE ; OSWRCH
|
||||
INY
|
||||
BRA :PL1
|
||||
:PS1 LDA #<:OSCLIM2
|
||||
LDY #>:OSCLIM2
|
||||
JSR PRSTR
|
||||
RTS
|
||||
:EXIT PLY
|
||||
PLX
|
||||
RTS
|
||||
|
|
@ -1703,7 +1881,11 @@ CLIHND PHX
|
|||
DB $00
|
||||
:HELP ASC '*HELP'
|
||||
DB $00
|
||||
:OSCLIM ASC 'OSCLI.'
|
||||
:LISP ASC 'LISP'
|
||||
DB $00
|
||||
:OSCLIM ASC 'OSCLI('
|
||||
DB $00
|
||||
:OSCLIM2 ASC ').'
|
||||
DB $00
|
||||
|
||||
* String comparison for OSCLI
|
||||
|
|
@ -1902,6 +2084,26 @@ STARDIRRET
|
|||
STA STRTH
|
||||
RTS
|
||||
|
||||
* Performs OSBYTE $80 function
|
||||
* Read ADC channel or get buffer status
|
||||
OSBYTE80 CPX #$00 ; X=0 Last ADC channel
|
||||
BNE :S1
|
||||
LDX #$00 ; Fire button
|
||||
LDY #$00 ; ADC never converted
|
||||
RTS
|
||||
:S1 BMI :S2
|
||||
LDX #$00 ; X +ve, ADC value
|
||||
LDY #$00
|
||||
RTS
|
||||
:S2 CPX #$FF ; X $FF = keyboard buf
|
||||
BEQ :INPUT
|
||||
CPX #$FE ; X $FE = RS423 i/p buf
|
||||
BEQ :INPUT
|
||||
LDX #$FF ; Spaced remaining in o/p
|
||||
RTS
|
||||
:INPUT LDX #$00 ; Nothing in input buf
|
||||
RTS
|
||||
|
||||
* Performs OSBYTE $81 INKEY$ function
|
||||
* X,Y has time limit
|
||||
* On exit, CC, Y=$00, X=key - key pressed
|
||||
|
|
|
|||
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