2021-03-28 14:27:53 +00:00
|
|
|
ca65 V2.18 - N/A
|
2021-03-27 15:07:36 +00:00
|
|
|
Main file : FileAccessFirmware.asm
|
|
|
|
|
Current file: FileAccessFirmware.asm
|
|
|
|
|
|
|
|
|
|
000000r 1 ;ProDOS Zero Page
|
|
|
|
|
000000r 1 Command = $42 ;ProDOS Command
|
|
|
|
|
000000r 1 Unit = $43 ;ProDOS unit (SDDD0000)
|
|
|
|
|
000000r 1 BufferLo = $44
|
|
|
|
|
000000r 1 BufferHi = $45
|
|
|
|
|
000000r 1 BlockLo = $46
|
|
|
|
|
000000r 1 BlockHi = $47
|
|
|
|
|
000000r 1
|
|
|
|
|
000000r 1 ; ProDOS Error Codes
|
|
|
|
|
000000r 1 IOError = $27
|
|
|
|
|
000000r 1 NoDevice = $28
|
|
|
|
|
000000r 1 WriteProtect = $2B
|
|
|
|
|
000000r 1
|
|
|
|
|
000000r 1 InputByte = $c08e+SLOT*$10
|
|
|
|
|
000000r 1 OutputByte = $c08d+SLOT*$10
|
|
|
|
|
000000r 1 InputFlags = $c08b+SLOT*$10
|
|
|
|
|
000000r 1 OutputFlags = $c087+SLOT*$10
|
|
|
|
|
000000r 1
|
|
|
|
|
000000r 1 ReadBlockCommand = $01
|
|
|
|
|
000000r 1 WriteBlockCommand = $02
|
|
|
|
|
000000r 1 GetTimeCommand = $03
|
|
|
|
|
000000r 1 ChangeDriveCommand = $04
|
|
|
|
|
000000r 1 ExecCommand = $05
|
|
|
|
|
000000r 1 LoadFileCommand = $06
|
|
|
|
|
000000r 1 SaveFileCommand = $07
|
|
|
|
|
000000r 1
|
|
|
|
|
000000r 1 .org SLOT*$100 + $C000
|
|
|
|
|
00C500 1 ;ID bytes for booting and drive detection
|
|
|
|
|
00C500 1 E0 20 cpx #$20 ;ID bytes for ProDOS and the
|
|
|
|
|
00C502 1 E0 00 cpx #$00 ; Apple Autostart ROM
|
|
|
|
|
00C504 1 E0 03 cpx #$03 ;
|
|
|
|
|
00C506 1
|
|
|
|
|
00C506 1 A2 50 ldx #SLOT*$10
|
|
|
|
|
00C508 1 86 2B stx $2b
|
|
|
|
|
00C50A 1 86 43 stx Unit
|
|
|
|
|
00C50C 1
|
|
|
|
|
00C50C 1 ;force EPROM to second page on boot
|
|
|
|
|
00C50C 1 A9 3F lda #$3f ;set all flags high and page 3 of EPROM for menu
|
|
|
|
|
00C50E 1 PageJump:
|
|
|
|
|
00C50E 1 8D D7 C0 sta OutputFlags
|
|
|
|
|
00C511 1 4C 19 C5 jmp Start ;this jump is only called if coming in from PageJump with A=$2f
|
|
|
|
|
00C514 1
|
|
|
|
|
00C514 1 ;entry points for ProDOS
|
|
|
|
|
00C514 1 DriverEntry:
|
|
|
|
|
00C514 1 A9 0F lda #$0f ;set all flags high and page 0 of EPROM
|
|
|
|
|
00C516 1 8D D7 C0 sta OutputFlags
|
|
|
|
|
00C519 1
|
|
|
|
|
00C519 1 Start:
|
|
|
|
|
00C519 1
|
|
|
|
|
00C519 1 ; Put command firmware here
|
|
|
|
|
00C519 1 ;
|
|
|
|
|
00C519 1 ;
|
|
|
|
|
00C519 1 ;
|
2021-03-28 14:27:53 +00:00
|
|
|
00C519 1 60 rts
|
|
|
|
|
00C51A 1
|
|
|
|
|
00C51A 1 SendByte:
|
|
|
|
|
00C51A 1 48 pha
|
|
|
|
|
00C51B 1 waitWrite:
|
|
|
|
|
00C51B 1 AD DB C0 lda InputFlags
|
2021-03-27 15:07:36 +00:00
|
|
|
00C51E 1 2A rol
|
2021-03-28 14:27:53 +00:00
|
|
|
00C51F 1 2A rol
|
|
|
|
|
00C520 1 B0 F9 bcs waitWrite
|
|
|
|
|
00C522 1 68 pla
|
|
|
|
|
00C523 1 8D DD C0 sta OutputByte
|
|
|
|
|
00C526 1 A9 0E lda #$0e ; set bit 0 low to indicate write started
|
|
|
|
|
00C528 1 8D D7 C0 sta OutputFlags
|
|
|
|
|
00C52B 1 finishWrite:
|
|
|
|
|
00C52B 1 AD DB C0 lda InputFlags
|
2021-03-27 15:07:36 +00:00
|
|
|
00C52E 1 2A rol
|
2021-03-28 14:27:53 +00:00
|
|
|
00C52F 1 2A rol
|
|
|
|
|
00C530 1 90 F9 bcc finishWrite
|
|
|
|
|
00C532 1 A9 0F lda #$0f
|
|
|
|
|
00C534 1 8D D7 C0 sta OutputFlags
|
|
|
|
|
00C537 1 60 rts
|
|
|
|
|
00C538 1
|
|
|
|
|
00C538 1 GetByte:
|
|
|
|
|
00C538 1 A9 0D lda #$0d ;set read flag low
|
|
|
|
|
00C53A 1 8D D7 C0 sta OutputFlags
|
|
|
|
|
00C53D 1 waitRead:
|
|
|
|
|
00C53D 1 AD DB C0 lda InputFlags
|
|
|
|
|
00C540 1 2A rol
|
|
|
|
|
00C541 1 B0 FA bcs waitRead
|
|
|
|
|
00C543 1 AD DE C0 lda InputByte
|
|
|
|
|
00C546 1 48 pha
|
|
|
|
|
00C547 1 A9 0F lda #$0f ;set all flags high
|
|
|
|
|
00C549 1 8D D7 C0 sta OutputFlags
|
|
|
|
|
00C54C 1 finishRead:
|
|
|
|
|
00C54C 1 AD DB C0 lda InputFlags
|
|
|
|
|
00C54F 1 2A rol
|
|
|
|
|
00C550 1 90 FA bcc finishRead
|
|
|
|
|
00C552 1 68 pla
|
|
|
|
|
00C553 1 end:
|
|
|
|
|
00C553 1 60 rts
|
|
|
|
|
00C554 1
|
|
|
|
|
00C554 1 00 00 00 00 .repeat 251-<end
|
|
|
|
|
00C558 1 00 00 00 00
|
|
|
|
|
00C55C 1 00 00 00 00
|
2021-03-27 15:07:36 +00:00
|
|
|
00C5FC 1 .byte 0
|
|
|
|
|
00C5FC 1 .endrepeat
|
|
|
|
|
00C5FC 1 00 00 .byte 0,0 ;0000 blocks = check status
|
|
|
|
|
00C5FE 1 07 .byte 7 ;bit set(0=status 1=read 2=write) unset(3=format, 4/5=number of volumes, 6=interruptable, 7=removable)
|
|
|
|
|
00C5FF 1 14 .byte DriverEntry&$00FF ;low byte of entry
|
|
|
|
|
00C600 1
|
|
|
|
|
00C600 1
|
