Apple-2-HW
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Apple2-IO-RPi
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Add command line to firmware

This commit is contained in:
Terence Boldt 2021-03-28 10:36:12 -04:00
parent ed62dd961e
commit 679debded4
4 changed files with 137 additions and 51 deletions
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51
Apple2/CommandFirmware.asm
View File

@ -46,12 +46,50 @@ DriverEntry:
sta OutputFlags
Start:
; Put command firmware here
;
;
;
lda $33
pha
lda #$a4
sta $33
GetCommand:
jsr $fd6a
lda $0200
cmp #$8d ;stop when return found
beq ExitApp
jsr DumpOutput
clc
bcc GetCommand
ExitApp:
pla
sta $33
lda #$00
sty $34
rts
DumpOutput:
ldx #$50
lda #$05 ;send command 5 = exec
jsr SendByte
ldy #$00
getInput:
lda $0200,y
cmp #$8d
beq sendNullTerminator
and #$7f
jsr SendByte
iny
bne getInput
sendNullTerminator:
lda #$00
jsr SendByte
getOutput:
jsr GetByte
cmp #$00
beq endOutput
jsr $fded
clc
bcc getOutput
endOutput:
rts
SendByte:
pha
@ -99,3 +137,8 @@ end:
.byte 7 ;bit set(0=status 1=read 2=write) unset(3=format, 4/5=number of volumes, 6=interruptable, 7=removable)
.byte DriverEntry&$00FF ;low byte of entry
;Translation of code written in mini-assembler on Apple //e
;Currently only works if card is in slot 5
.org $1000

137
Apple2/CommandFirmware.lst
View File

@ -50,59 +50,102 @@ Current file: CommandFirmware.asm
00C516 1 8D D7 C0 sta OutputFlags
00C519 1
00C519 1 Start:
00C519 1 ; Put command firmware here
00C519 1 ;
00C519 1 ;
00C519 1 ;
00C519 1 60 rts
00C51A 1
00C51A 1
00C51A 1 SendByte:
00C51A 1 48 pha
00C51B 1 waitWrite:
00C51B 1 AD DB C0 lda InputFlags
00C51E 1 2A rol
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
00C52E 1 2A rol
00C52F 1 2A rol
00C530 1 90 F9 bcc finishWrite
00C532 1 A9 0F lda #$0f
00C534 1 8D D7 C0 sta OutputFlags
00C519 1 A5 33 lda $33
00C51B 1 48 pha
00C51C 1 A9 A4 lda #$a4
00C51E 1 85 33 sta $33
00C520 1 GetCommand:
00C520 1 20 6A FD jsr $fd6a
00C523 1 AD 00 02 lda $0200
00C526 1 C9 8D cmp #$8d ;stop when return found
00C528 1 F0 06 beq ExitApp
00C52A 1 20 38 C5 jsr DumpOutput
00C52D 1 18 clc
00C52E 1 90 F0 bcc GetCommand
00C530 1 ExitApp:
00C530 1 68 pla
00C531 1 85 33 sta $33
00C533 1 A9 00 lda #$00
00C535 1 84 34 sty $34
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
00C538 1 DumpOutput:
00C538 1 A2 50 ldx #$50
00C53A 1 A9 05 lda #$05 ;send command 5 = exec
00C53C 1 20 63 C5 jsr SendByte
00C53F 1 A0 00 ldy #$00
00C541 1 getInput:
00C541 1 B9 00 02 lda $0200,y
00C544 1 C9 8D cmp #$8d
00C546 1 F0 08 beq sendNullTerminator
00C548 1 29 7F and #$7f
00C54A 1 20 63 C5 jsr SendByte
00C54D 1 C8 iny
00C54E 1 D0 F1 bne getInput
00C550 1 sendNullTerminator:
00C550 1 A9 00 lda #$00
00C552 1 20 63 C5 jsr SendByte
00C555 1 getOutput:
00C555 1 20 81 C5 jsr GetByte
00C558 1 C9 00 cmp #$00
00C55A 1 F0 06 beq endOutput
00C55C 1 20 ED FD jsr $fded
00C55F 1 18 clc
00C560 1 90 F3 bcc getOutput
00C562 1 endOutput:
00C562 1 60 rts
00C563 1
00C563 1 SendByte:
00C563 1 48 pha
00C564 1 waitWrite:
00C564 1 AD DB C0 lda InputFlags
00C567 1 2A rol
00C568 1 2A rol
00C569 1 B0 F9 bcs waitWrite
00C56B 1 68 pla
00C56C 1 8D DD C0 sta OutputByte
00C56F 1 A9 0E lda #$0e ; set bit 0 low to indicate write started
00C571 1 8D D7 C0 sta OutputFlags
00C574 1 finishWrite:
00C574 1 AD DB C0 lda InputFlags
00C577 1 2A rol
00C578 1 2A rol
00C579 1 90 F9 bcc finishWrite
00C57B 1 A9 0F lda #$0f
00C57D 1 8D D7 C0 sta OutputFlags
00C580 1 60 rts
00C581 1
00C581 1 GetByte:
00C581 1 A9 0D lda #$0d ;set read flag low
00C583 1 8D D7 C0 sta OutputFlags
00C586 1 waitRead:
00C586 1 AD DB C0 lda InputFlags
00C589 1 2A rol
00C58A 1 B0 FA bcs waitRead
00C58C 1 AD DE C0 lda InputByte
00C58F 1 48 pha
00C590 1 A9 0F lda #$0f ;set all flags high
00C592 1 8D D7 C0 sta OutputFlags
00C595 1 finishRead:
00C595 1 AD DB C0 lda InputFlags
00C598 1 2A rol
00C599 1 90 FA bcc finishRead
00C59B 1 68 pla
00C59C 1 end:
00C59C 1 60 rts
00C59D 1
00C59D 1 00 00 00 00 .repeat 251-<end
00C5A1 1 00 00 00 00
00C5A5 1 00 00 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 ;Translation of code written in mini-assembler on Apple //e
00C600 1 ;Currently only works if card is in slot 5
00C600 1
00C600 1 .org $1000
001000 1
001000 1

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Apple2/Firmware_27256_EPROM.bin
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Apple2/Firmware_AT28C64B_EEPROM.bin
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