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Applecorn
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Label-ize absolute references to Apple II I/O locations. 

Fix a typo-ed reference to CLRALTCHAR to correct location.
This commit is contained in:
apple2geek 2022-10-11 22:00:36 -06:00
parent 03e263dd5b
commit 8f83ea188e
12 changed files with 168 additions and 251 deletions
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83
applecorn.s
View File

@ -34,8 +34,12 @@ A4H EQU $43
STRTL EQU $3ED
STRTH EQU $3EE
* Apple II BREAK vector
BREAKV EQU $3F0
* Reset vector (2 bytes + 1 byte checksum)
RSTV EQU $3F2
PWRDUP EQU $3F4
* IRQ vector
A2IRQV EQU $3FE
@ -66,6 +70,55 @@ P8BMAP282F EQU $BF5D
P8BMAP3037 EQU $BF5E
P8BMAP383F EQU $BF5F
*Hardware I/O locations
KEYBOARD EQU $C000
80STOREOFF EQU $C000
80STOREON EQU $C001 ; Currently not used
RDMAINRAM EQU $C002
RDCARDRAM EQU $C003
WRMAINRAM EQU $C004
WRCARDRAM EQU $C005
SETSTDZP EQU $C008
SETALTZP EQU $C009
CLR80VID EQU $C00C
SET80VID EQU $C00D
CLRALTCHAR EQU $C00E
SETALTCHAR EQU $C00F
KBDSTRB EQU $C010
RDVBL EQU $C019
RD80VID EQU $C01F
TBCOLOR EQU $C022 ; GS-specific, used but commented out
SPKR EQU $C030
CLOCKCTL EQU $C034 ; GS-specific, Clock control register
CYAREG EQU $C036 ; GS-specific, CYA Register
GRON EQU $C050
TEXTON EQU $C051
FULLGR EQU $C052
MIXGRTXT EQU $C053 ; Currently not used
PAGE1 EQU $C054
PAGE2 EQU $C055
LORES EQU $C056 ; Currently not used
HIRES EQU $C057
AN0OFF EQU $C058
AN0ON EQU $C059
AN1OFF EQU $C05A
AN1ON EQU $C05B
AN2OFF EQU $C05C
AN2ON EQU $C05D
AN3OFF EQU $C05E
AN3ON EQU $C05F
BUTTON0 EQU $C061
BUTTON1 EQU $C062
ROMIN EQU $C081
LCBANK1 EQU $C08B
* IO Buffer for reading file (1024 bytes)
IOBUF0 EQU $0C00 ; For loading/saving, OSFILE, *.
IOBUF1 EQU $1000 ; Four open files for langs
@ -88,7 +141,7 @@ FDRAWADDR EQU $9400
FONTADDR EQU $A900
* Address in aux memory where ROM will be loaded
AUXADDR EQU $8000
ROMAUXADDR EQU $8000
* Address in aux memory where the MOS shim is located
AUXMOS1 EQU $2000 ; Temp staging area in Aux
@ -99,8 +152,8 @@ AUXMOS EQU $D000 ; Final location in aux LC
* routine in aux memory
XF2AUX MAC
SEI ; Disable IRQ before XFER
LDX $C08B ; R/W LC RAM, bank 1
LDX $C08B
LDX LCBANK1 ; R/W LC RAM, bank 1
LDX LCBANK1
LDX #<]1
STX STRTL
LDX #>]1
@ -146,8 +199,8 @@ ENTAUX MAC
* Careful: This enables IRQ - not for use in ISR
ENTMAIN MAC
TXS ; Main SP already in X
LDX $C081 ; Bank in ROM
LDX $C081
LDX ROMIN ; Bank in ROM
LDX ROMIN
CLI ; Re-enable IRQ after XFER
EOM
@ -166,20 +219,20 @@ IENTAUX MAC
* For use in interrupt handlers (no CLI!)
IENTMAIN MAC
TXS ; Main SP already in X
LDX $C081 ; Bank in ROM
LDX $C081
LDX ROMIN ; Bank in ROM
LDX ROMIN
EOM
* Enable writing to main memory (for code running in aux)
WRTMAIN MAC
PHP
SEI ; Keeps IRQ handler easy
STA $C004 ; Write to main memory
STA WRMAINRAM ; Write to main memory
EOM
* Go back to writing to aux (for code running in aux)
WRTAUX MAC
STA $C005 ; Write to aux memory
STA WRCARDRAM ; Write to aux memory
PLP ; Normal service resumed
EOM
@ -187,16 +240,16 @@ WRTAUX MAC
ALTZP MAC
PHP
SEI ; Disable IRQ when AltZP on
LDA $C08B ; R/W LC bank 1
LDA $C08B
STA $C009 ; Alt ZP and LC
LDA LCBANK1 ; R/W LC bank 1
LDA LCBANK1
STA SETALTZP ; Alt ZP and LC
EOM
* Manually disable AltZP (for code running in main)
MAINZP MAC
STA $C008 ; Main ZP and LC
LDA $C081 ; Bank ROM back in
LDA $C081
STA SETSTDZP ; Main ZP and LC
LDA ROMIN ; Bank ROM back in
LDA ROMIN
PLP ; Turn IRQ back on
EOM

7
auxmem.bytwrd.s
View File

@ -344,12 +344,13 @@ WORD05IO LDA OSINTWS+0 ; X CORRUPTED BY XF2MAIN
WORD05IO1 >>> XF2MAIN,MAINRDMEM
* <8000xxxx language memory
* ????xxxx main memory RAM paged in via STA $C002
* ????xxxx MAIN RAM is activated by writing to RDMAINRAM ($C002)
* AUX RAM us activated by writing to RDCARDRAM ($C003)
* ????xxxx main memory ROM paged in via XFER
STA $C002 ; Switch to main memory
STA RDMAINRAM ; Switch to main memory
WORD05A LDA (OSINTWS) ; Get byte
STA $C003 ; Back to aux memory
STA RDCARDRAM ; Back to aux memory
STA (OSCTRL),Y ; Store it
RTS

20
auxmem.chario.s
View File

@ -105,7 +105,7 @@ KBDINIT LDX #DEFBYTEEND-DEFBYTE-1
BIT SETV
JSR KBDTEST
BCS :KBDINITOK ; Return default MODE=0
STA $C010 ; Ack. keypress
STA KBDSTRB ; Ack. keypress
TAX ; Use keypress as default MODE
:KBDINITOK TXA
RTS
@ -169,11 +169,11 @@ INKEY5 DEX
INKEY6 PHY
*
* VBLK pulses at 50Hz/60Hz, toggles at 100Hz/120Hz
LDX $C019 ; Get initial VBLK state
INKEY8 BIT $C000
LDX RDVBL ; Get initial VBLK state
INKEY8 BIT KEYBOARD
BMI INKEY4 ; Key pressed
TXA
EOR $C019
EOR RDVBL
BPL INKEY8 ; Wait for VBLK change
BMI INKEYLP ; Loop back to key test
@ -364,15 +364,15 @@ KEYCOPY LDA FXTABCHAR ; Prepare TAB if no copy cursor
* Cursors -> $CC-$CF
*
KBDREAD CLV ; VC=return keypress
KBDTEST LDA $C000 ; VS here to test for keypress
KBDTEST LDA KEYBOARD ; VS here to test for keypress
EOR #$80 ; Toggle bit 7
CMP #$80
BCS KBDDONE ; No key pressed
BVS KBDDONE ; VS=test for keypress
STA $C010 ; Ack. keypress
BIT $C061
STA KBDSTRB ; Ack. keypress
BIT BUTTON0
BMI KBDLALT ; Left Apple pressed
BIT $C062
BIT BUTTON1
BMI KBDRALT ; Right Apple pressed
CMP #$09
BEQ KBDTAB ; TAB is dual action TAB/COPY
@ -398,10 +398,10 @@ KBDLALT CMP #$40 ; Left Apple key pressed
BCS KBDCHKESC ; >'9'
KBDFUNC AND #$0F ; Convert Apple-Num to function key
ORA #$80
BIT $C062
BIT BUTTON1
BPL KBDCHKESC ; Left+Digit -> $8x
ORA #$90 ; Right+Digit -> $9x
BIT $C061
BIT BUTTON0
BPL KBDCHKESC
EOR #$30 ; Left+Right+Digit -> $Ax
BRA KBDCHKESC

18
auxmem.init.s
View File

@ -32,11 +32,11 @@ MOSINIT SEI ; Disable IRQ while initializing
LDX #$FF ; Initialize Alt SP to $1FF
TXS
STA $C005 ; Make sure we are writing aux
STA $C000 ; Make sure 80STORE is off
STA WRCARDRAM ; Make sure we are writing aux
STA 80STOREOFF ; Make sure 80STORE is off
LDA $C08B ; LC RAM Rd/Wt, 1st 4K bank
LDA $C08B
LDA LCBANK1 ; LC RAM Rd/Wt, 1st 4K bank
LDA LCBANK1
:MODBRA BRA :RELOC ; NOPped out on first run
BRA :NORELOC
@ -104,9 +104,9 @@ MOSINIT SEI ; Disable IRQ while initializing
:S7 BRA :L2
:NORELOC
:S8 STA $C00D ; 80 col on
STA $C003 ; Alt charset off
STA $C055 ; PAGE2
:S8 STA SET80VID ; 80 col on
STA CLRALTCHAR ; Alt charset off (?)
STA PAGE2 ; PAGE2
JMP MOSHIGH ; Ensure executing in high memory here
MOSHIGH SEI ; Disable IRQ while initializing
@ -126,7 +126,7 @@ MOSHIGH SEI ; Disable IRQ while initializing
DEX
BPL :INITPG2
LDA $C036 ; GS speed register
LDA CYAREG ; GS speed register
AND #$80 ; Speed bit only
STA GSSPEED ; In Alt LC for IRQ/BRK hdlr
@ -157,7 +157,7 @@ BYTE8E PHP ; Save CLC=RESET, SEC=Not RESET
JSR OSNEWL
PLP ; Get entry type back
LDA #$01
JMP AUXADDR
JMP ROMAUXADDR
* OSBYTE $8F - Issue service call
* X=service call, Y=parameter

12
auxmem.misc.s
View File

@ -35,7 +35,7 @@ ADVALBUF INX
BEQ :ADVALOK ; Serial input, return 0
LDX #$01 ; For outputs, return 1 char free
RTS
:ADVALKBD BIT $C000 ; Test keyboard data/strobe
:ADVALKBD BIT KEYBOARD ; Test keyboard data/strobe
BPL :ADVALOK ; No Strobe, return 0
INX ; Strobe, return 1
:ADVALOK RTS
@ -73,7 +73,7 @@ BEEP PHA
BNE :L2 ; 3cy/2cy (BEEPX-1) * 3cy + 1 * 2cy
*------------------------------------------------------
* BEEPX*5-1cy
LDA $C030 ; 4cy BEEPX*5+5
LDA SPKR ; 4cy BEEPX*5+5
DEY ; 2cy BEEPX*5+7
BNE :L1 ; 3cy/2cy BEEPX*5+10
PLY ;
@ -361,9 +361,9 @@ EVENT RTS
* Initialize ROMTAB according to user selection in menu
ROMINIT STZ MAXROM ; One sideways ROM only
STA $C002 ; Read main mem
STA RDMAINRAM ; Read main mem
LDA USERSEL ; *TO DO* Should be actual number of ROMs
STA $C003 ; Read aux mem
STA RDCARDRAM ; Read aux mem
CMP #6
BNE :X1
@ -387,9 +387,9 @@ GSBRKAUX >>> IENTAUX ; IENTAUX does not do CLI
IRQBRKHDLR PHA
* Mustn't enable IRQs within the IRQ handler
* Do not use WRTMAIN/WRTAUX macros
STA $C004 ; Write to main memory
STA WRMAINRAM ; Write to main memory
STA $45 ; $45=A for ProDOS IRQ handlers
STA $C005 ; Write to aux memory
STA WRCARDRAM ; Write to aux memory
TXA
PHA

4
auxmem.oscli.s
View File

@ -735,7 +735,7 @@ EXECNOTFND JMP ERRNOTFND ; File not found
* --------------------
* Turn Apple II accelerators on
CMDFAST LDA #$80 ; Apple IIgs
TSB $C036
TSB CYAREG
STA GSSPEED
JSR ZIPUNLOCK ; ZipChip
JSR ZIPDETECT
@ -749,7 +749,7 @@ CMDFAST LDA #$80 ; Apple IIgs
* --------------------
* Turn Apple II accelerators off
CMDSLOW LDA #$80 ; Apple IIgs
TRB $C036
TRB CYAREG
STZ GSSPEED
JSR ZIPUNLOCK ; ZipChip
JSR ZIPDETECT

74
auxmem.vdu.s
View File

@ -321,7 +321,7 @@ VDU127 JSR VDU08 ; Move cursor back
* Display character at current (TEXTX,TEXTY)
PRCHRC PHA ; Save character
LDA $C000
LDA KEYBOARD
BPL :RESUME ; No key pressed
EOR #$80
:PAUSE1 JSR KBDCHKESC ; Ask KBD to test if Escape
@ -329,8 +329,8 @@ PRCHRC PHA ; Save character
BMI :RESUMEACK ; Escape, skip pausing
CMP #$13
BNE :RESUME ; Not Ctrl-S
STA $C010 ; Ack. keypress
:PAUSE2 LDA $C000
STA KBDSTRB ; Ack. keypress
:PAUSE2 LDA KEYBOARD
BPL :PAUSE2 ; Loop until keypress
EOR #$80
CMP #$11 ; Ctrl-Q
@ -338,7 +338,7 @@ PRCHRC PHA ; Save character
JSR KBDCHKESC ; Ask KBD to test if Escape
BIT ESCFLAG
BPL :PAUSE2 ; No Escape, keep pausing
:RESUMEACK STA $C010 ; Ack. keypress
:RESUMEACK STA KBDSTRB ; Ack. keypress
:RESUME PLA
* Put character to screen
@ -385,9 +385,9 @@ GETCHRC JSR CHARADDR ; Find character address
BIT VDUBANK
BMI GETCHRGS
BCC GETCHR6 ; Aux memory
STA $C002 ; Read main memory
STA RDMAINRAM ; Read main memory
GETCHR6 LDA (VDUADDR),Y ; Get character
STA $C003 ; Read aux memory
STA RDCARDRAM ; Read aux memory
TAY ; Convert character
AND #$A0
BNE GETCHR7
@ -400,9 +400,9 @@ GETCHR7 TYA
TAX ; X=char
GETCHROK RTS
GETCHRGS BCC GETCHR8 ; Aux memory
STA $C002 ; Read main memory
STA RDMAINRAM ; Read main memory
GETCHR8 LDA [VDUADDR],Y ; Get character
STA $C003 ; Read aux memory
STA RDCARDRAM ; Read aux memory
TAY ; Convert character
AND #$A0
BNE GETCHR9
@ -433,7 +433,7 @@ CHARADDRY ASL
LDA SCNTAB+1,Y ; MSB of row address
STA VDUADDR+1
LDA VDUTEXTX
BIT $C01F
BIT RD80VID
SEC
BPL CHARADDR40 ; 40-col
LSR A
@ -545,7 +545,7 @@ VDU31 LDY VDUQ+8
LDX VDUQ+7
CPX #80
BCS :DONE
BIT $C01F
BIT RD80VID
BMI :T9A
CPX #40
BCS :DONE
@ -598,15 +598,15 @@ VDU22 LDA VDUQ+8
STA CURSORED ; Edit cursor when editing
JSR VDU20 ; Default colours
JSR VDU26 ; Default windows
STA $C052 ; Clear MIXED
STA FULLGR ; Clear MIXED mode
LDA VDUSCREEN
BMI VDU22G ; b7=1, graphics mode
AND #$01 ; 40col/80col bit
TAX
STA $C00C,X ; Select 40col/80col
STA $C051 ; Enable Text
STA $C055 ; PAGE2
STA $C00F ; Enable alt charset
STA CLR80VID,X ; Select 40col/80col
STA TEXTON ; Enable Text
STA PAGE2 ; PAGE2
STA SETALTCHAR ; Enable alt charset
* Fall through into CLS
@ -638,10 +638,10 @@ VDU12 STZ FXLINES
VDU12SOFT JMP VDU16 ; *TEMP*
VDU22G JSR VDU12 ; Clear text and HGR screen
STA $C057 ; Hi-Res
STA $C050 ; Enable Graphics
STA $C054 ; PAGE1
STA $C00C ; Select 40col text
STA HIRES ; Hi-Res
STA GRON ; Enable Graphics
STA PAGE1 ; PAGE1
STA CLR80VID ; Select 40col text
RTS
@ -650,7 +650,7 @@ CLREOL JSR CHARADDR ; Set VDUADDR=>start of line
INC TXTWINRGT
BIT VDUBANK
BMI CLREOLGS ; AppleGS
BIT $C01F
BIT RD80VID
BPL :FORTY ; 40-col mode
:EIGHTY LDX VDUTEXTX ; Addr offset for column
:L1 TXA ; Column/2 into Y
@ -679,7 +679,7 @@ CLREOLDONE DEC TXTWINRGT
BPL :NOHIRES
JMP HSCRCLREOL ; Clear an HGR line
:NOHIRES RTS
CLREOLGS BIT $C01F
CLREOLGS BIT RD80VID
BPL :FORTY ; 40-col mode
:EIGHTY LDX VDUTEXTX ; Addr offset for column
:L1 TXA ; Column/2 into Y
@ -788,7 +788,7 @@ DOSCR1LINE INC TXTWINRGT
BIT VDUBANK
BMI SCR1LINEGS ; AppleGS
LDX TXTWINLFT ; Addr offset for column
BIT $C01F
BIT RD80VID
BPL :FORTY ; 40-col mode
:EIGHTY
:L1 TXA ; Column/2 into Y
@ -799,10 +799,10 @@ DOSCR1LINE INC TXTWINRGT
STA (VDUADDR2),Y
BRA :SKIPMAIN
:MAIN >>> WRTMAIN
STA $C002 ; Read main memory
STA RDMAINRAM ; Read main memory
LDA (VDUADDR),Y
STA (VDUADDR2),Y
STA $C003 ; Read aux memory
STA RDCARDRAM ; Read aux memory
>>> WRTAUX
:SKIPMAIN INX
CPX TXTWINRGT
@ -811,10 +811,10 @@ DOSCR1LINE INC TXTWINRGT
:FORTY TXA
TAY
:L2 >>> WRTMAIN
STA $C002 ; Read main memory
STA RDMAINRAM ; Read main memory
LDA (VDUADDR),Y
STA (VDUADDR2),Y
STA $C003 ; Read aux memory
STA RDCARDRAM ; Read aux memory
>>> WRTAUX
INY
CPY TXTWINRGT
@ -823,7 +823,7 @@ SCR1LNDONE DEC TXTWINRGT
PLA
RTS
SCR1LINEGS LDX TXTWINLFT
BIT $C01F
BIT RD80VID
BPL :FORTY ; 40-col mode
:EIGHTY
:L1 TXA ; Column/2 into Y
@ -834,20 +834,20 @@ SCR1LINEGS LDX TXTWINLFT
STA VDUBANK
STA VDUBANK2
>>> WRTMAIN
STA $C002 ; Read main memory
STA RDMAINRAM ; Read main memory
LDA [VDUADDR],Y ; Even cols in bank $E1
STA [VDUADDR2],Y
STA $C003 ; Read aux memory
STA RDCARDRAM ; Read aux memory
>>> WRTAUX
BRA :SKIPE0
:E0 LDA #$E0
STA VDUBANK
STA VDUBANK2
>>> WRTMAIN
STA $C002 ; Read main memory
STA RDMAINRAM ; Read main memory
LDA [VDUADDR],Y ; Odd cols in bank $E0
STA [VDUADDR2],Y
STA $C003 ; Read aux memory
STA RDCARDRAM ; Read aux memory
>>> WRTAUX
:SKIPE0 INX
CPX TXTWINRGT
@ -858,10 +858,10 @@ SCR1LINEGS LDX TXTWINLFT
LDA #$E0
STA VDUBANK
:L2 >>> WRTMAIN
STA $C002 ; Read main memory
STA RDMAINRAM ; Read main memory
LDA [VDUADDR],Y
STA [VDUADDR2],Y
STA $C003 ; Read aux memory
STA RDCARDRAM ; Read aux memory
>>> WRTAUX
INY
CPY TXTWINRGT
@ -884,14 +884,14 @@ VDU16 JMP HSCRCLEAR
VDU20
* THE FOLLOWING TWO LINES ARE FOR GS ONLY & NOT SAFE ON //c
* LDA #$F0
* STA $C022 ; Set text palette
* STA TBCOLOR ; Set text palette
LDX #VDUCOLEND-TXTFGD
LDA #$00
VDU20LP STA TXTFGD,X ; Clear all colours
DEX ; and gcol actions
BPL VDU20LP
* THE FOLLOWING LINE IS FOR GS ONLY & NOT SAFE ON //c
* STA $C034 ; Set border
* STA CLOCKCTL ; Set border
LDA #$80
JSR HSCRSETTCOL ; Set txt background
LDX #$00
@ -917,7 +917,7 @@ VDU17BORDER AND #$0F
STA VDUBORDER
TAX
LDA CLRTRANS16,X
STA $C034
STA CLOCKCTL
RTS
* VDU 18 - GCOL k,a - select graphics colour and plot action
@ -1091,7 +1091,7 @@ VDU25BACKUP2 LDA GFXPOSNX,X ; POSN becomes LAST
LDA VDUPIXELS
BEQ :S2
JSR HGRPLOTTER
:S2 LDA $C000 ; This and PRCHRC need to be
:S2 LDA KEYBOARD ; This and PRCHRC need to be
EOR #$80 ; made more generalised
BMI VDU25EXIT ; No key pressed
JSR KBDCHKESC ; Ask KBD to test if Escape

10
mainmem.init.s
View File

@ -92,13 +92,13 @@ GSBRK >>> XF2AUX,GSBRKAUX
*:S1 RTS
*
* Reset handler - invoked on Ctrl-Reset
* XFER to AUXMOS ($C000) in aux, AuxZP on, LC on
* XFER to AUXMOS ($D000) in aux, AuxZP on, LC on
RESET TSX
STX $0100
LDA $C058 ; AN0 off
LDA $C05A ; AN1 off
LDA $C05D ; AN2 on
LDA $C05F ; AN3 on
LDA AN0OFF ; AN0 off
LDA AN1OFF ; AN1 off
LDA AN2ON ; AN2 on
LDA AN3ON ; AN3 on
>>> XF2AUX,AUXMOS
RTS

157
mainmem.ldr.s
View File

@ -71,7 +71,7 @@ RTSINST LDA CMDPATH
CMP #'/'
BEQ DISCONN ; CMDPATH already absolute path
:GETPFX JSR MLI
DB $C7 ; Get Prefix
DB GPFXCMD ; Get Prefix
DW GETPFXPARM
* Disconnect /RAM ramdrive to avoid aux corruption
@ -154,12 +154,12 @@ DISCONN LDA MACHID
LDA #>RESET
STA RSTV+1
EOR #$A5 ; Checksum
STA RSTV+2
STA PWRDUP
LDA #<GSBRK ; Set BRK vector in main mem
STA $3F0
LDA #<GSBRK ; Set BREAK vector in main mem
STA BREAKV
LDA #>GSBRK
STA $3F0+1
STA BREAKV+1
JSR GFXINIT ; Initialize FDraw graphics
@ -184,14 +184,14 @@ UNSUPLP LDA UNSUPMSG,X
JSR COUT1
INX
BNE UNSUPLP
UNSUPWAIT STA $C010
UNSUPKEY LDA $C000
UNSUPWAIT STA KBDSTRB
UNSUPKEY LDA KEYBOARD
BPL UNSUPKEY
STA $C010
STA KBDSTRB
JSR MLI
DB QUITCMD
DW UNSUPQPARM
DB QUITCMD
DW UNSUPQPARM
UNSUPQPARM DB $04,$00,$00,$00,$00,$00,$00
UNSUPMSG ASC "APPLECORN REQUIRES AN APPLE IIGS, APPLE", 8D
@ -200,140 +200,3 @@ UNSUPMSG ASC "APPLECORN REQUIRES AN APPLE IIGS, APPLE", 8D
ASC "PRESS ANY KEY TO QUIT TO PRODOS", 00
ENDSYSTEM
; Original APPLECORN.BIN code started here
*START
* LDA #>AUXADDR ; Address in aux
* LDX #<AUXADDR
* SEC ; Load into aux
* JSR LOADCODE ; Load lang ROM
*
* JSR GFXINIT ; Initialize FDraw graphics
*
* TSX ; Save SP at $0100 in aux
* >>> ALTZP
* STX $0100
* >>> MAINZP
* >>> XF2AUX,AUXMOS1
*
* Load image from file into memory
* On entry: OPENPL set up to point to leafname of file to load
* Loads file from directory applecorn started from
* Uses BLKBUF at loading buffer
* Load address in A,X
* Carry set->load to aux, carry clear->load to main
*LOADCODE PHP ; Save carry flag
* STA :ADDRH ; MSB of load address
* STX :ADDRL ; LSB of load address
* STZ :BLOCKS
*
* LDX #0
*:LP1 LDA CMDPATH+1,X ; Copy Applecorn path to MOSFILE
* STA MOSFILE2+1,X
* INX
* CPX CMDPATH
* BCC :LP1
*:LP2 DEX
* LDA MOSFILE2+1,X
* CMP #'/'
* BNE :LP2
* LDA OPENPL+1
* STA A1L
* LDA OPENPL+2
* STA A1H
* LDY #1
* LDA (A1L),Y
* CMP #'/'
* BEQ :L4 ; Already absolute path
*:LP3 LDA (A1L),Y
* STA MOSFILE2+2,X
* INX
* INY
* TYA
* CMP (A1L)
* BCC :LP3
* BEQ :LP3
* INX
* STX MOSFILE2+0
* LDA #<MOSFILE2 ; Point to absolute path
* STA OPENPL+1
* LDA #>MOSFILE2
* STA OPENPL+2
*
*:L4 JSR OPENFILE ; Open ROM file
* BCC :S1
* PLP
* BCC :L1A ; Load to main, report error
* RTS ; Load to aux, return CS=Failed
*:L1A LDX #$00
*:L1B LDA :CANTOPEN,X ; Part one of error msg
* BEQ :S0
* JSR COUT1
* INX
* BRA :L1B
*:S0 LDA OPENPL+1 ; Print filename
* STA A1L
* LDA OPENPL+2
* STA A1H
* LDY #$00
* LDA (A1L),Y
* STA :LEN
*:L1C CPY :LEN
* BEQ :ERR1
* INY
* LDA (A1L),Y
* JSR COUT1
* BRA :L1C
*:ERR1 JSR CROUT
* JSR BELL
*:SPIN BRA :SPIN
*:S1 LDA OPENPL+5 ; File reference number
* STA READPL+1
*:L2 PLP
* PHP
* BCS :L2A ; Loading to aux, skip dots
* LDA #'.'+$80 ; Print progress dots
* JSR COUT1
*:L2A JSR RDFILE ; Read file block by block
* BCS :CLOSE ; EOF (0 bytes left) or some error
* LDA #<BLKBUF ; Source start addr -> A1L,A1H
* STA A1L
* LDA #>BLKBUF
* STA A1H
* LDA #<BLKBUFEND ; Source end addr -> A2L,A2H
* STA A2L
* LDA #>BLKBUFEND
* STA A2H
* LDA :ADDRL ; Dest in aux -> A4L, A4H
* STA A4L
* LDA :ADDRH
* LDX :BLOCKS
*:L3 CPX #$00
* BEQ :S2
* INC
* INC
* DEX
* BRA :L3
*:S2 STA A4H
* PLP ; Recover carry flag
* PHP
* BCS :TOAUX
* JSR MEMCPY ; Destination in main mem
* BRA :S3
*:TOAUX JSR AUXMOVE ; Carry already set (so to aux)
*:S3 INC :BLOCKS
* BRA :L2
*:CLOSE LDA OPENPL+5 ; File reference number
* STA CLSPL+1
* JSR CLSFILE
* JSR CROUT
* PLP
* CLC ; CC=Ok
* RTS
*:ADDRL DB $00 ; Destination address (LSB)
*:ADDRH DB $00 ; Destination address (MSB)
*:BLOCKS DB $00 ; Counter for blocks read
*:LEN DB $00 ; Length of filename
*:CANTOPEN ASC "Unable to open "
* DB $00

4
mainmem.menu.s
View File

@ -20,9 +20,9 @@ ROMMENU JSR HOME ; Clear screen
BNE :LP0
:LP1
:KEYIN LDA $C000 ; Kdb data / strobe
:KEYIN LDA KEYBOARD ; Kdb data / strobe
BPL :KEYIN ; Wait for keystroke
STA $C010 ; Clear strobe
STA KBDSTRB ; Clear strobe
AND #$7F
SEC
SBC #'1' ; '1'->0, '2'->1 etc.

8
mainmem.misc.s
View File

@ -27,14 +27,14 @@ MEMCPY LDA (A1L)
* Copy 512 bytes from BLKBUF to AUXBLK in aux LC
COPYAUXBLK >>> ALTZP ; Alt ZP & Alt LC on
LDY #$00
STA $C005 ; Write aux mem
STA WRCARDRAM ; Write aux mem
:L1 LDA BLKBUF+$000,Y
STA AUXBLK+$000,Y
LDA BLKBUF+$100,Y
STA AUXBLK+$100,Y
INY
BNE :L1
STA $C004 ; Write main mem
STA WRMAINRAM ; Write main mem
:S2 >>> MAINZP ; Alt ZP off, ROM back in
RTSINSTR RTS
@ -98,12 +98,12 @@ EXISTS LDA #<MOSFILE
* Preserves A
COPYFB PHA
LDX #$11 ; 18 bytes in FILEBLK
STA $C005 ; Write to aux mem
STA WRCARDRAM ; Write to aux mem
:L1 LDA FILEBLK,X
STA OSFILECB,X
DEX
BPL :L1
STA $C004 ; Write to main mem again
STA WRMAINRAM ; Write to main mem again
PLA
RTS

22
mainmem.svc.s
View File

@ -359,9 +359,9 @@ GBPB >>> ENTMAIN
LDA GBPBDAT+1
STA ZPMOS+1
LDA BLKBUF
STA $C005 ; Write to aux
STA WRCARDRAM ; Write to aux
STA (ZPMOS) ; Store byte in aux mem
STA $C004 ; Write to main again
STA WRMAINRAM ; Write to main again
BRA :UPDCB
:WRITE LDA #<BLKBUF ; Start of destination
STA A4L
@ -400,7 +400,7 @@ GBPB >>> ENTMAIN
:ERR
:ZERO PLA ; Throw away A
>>> ALTZP ; Control block can be in ZP!
STA $C005 ; Write to aux
STA WRCARDRAM ; Write to aux
LDA GBPBAUXCB+0 ; Copy control block back to aux
STA $B0+0 ; $B0 in AltZP is temp FS workspace
LDA GBPBAUXCB+1
@ -410,7 +410,7 @@ GBPB >>> ENTMAIN
STA ($B0),Y
DEY
BPL :L2
STA $C004 ; Write to main again
STA WRMAINRAM ; Write to main again
>>> MAINZP
>>> XF2AUX,OSGBPBRET
@ -939,9 +939,9 @@ CHKNOTFND CMP #$44 ; Convert ProDOS 'not found'
* Quit to ProDOS
QUIT INC $03F4 ; Invalidate powerup byte
STA $C054 ; PAGE2 off
STA $C00E ; Alt font off
QUIT INC PWRDUP ; Invalidate powerup byte
STA PAGE1 ; PAGE2 off
STA CLRALTCHAR ; Alt font off
JSR MLI
DB QUITCMD
DW QUITPL
@ -1196,8 +1196,8 @@ MULTIDEL >>> ENTMAIN
* Read machid from auxmem
MACHRD LDA $C081
LDA $C081
MACHRD LDA ROMIN
LDA ROMIN
LDA $FBC0
SEC
JSR $FE1F
@ -1206,8 +1206,8 @@ MACHRD LDA $C081
* Read mainmem from auxmem
MAINRDMEM STA A1L
STY A1H
LDA $C081
LDA $C081
LDA ROMIN
LDA ROMIN
LDA (A1L)
MAINRDEXIT >>> XF2AUX,NULLRTS ; Back to an RTS