232 lines
8.7 KiB
Plaintext
232 lines
8.7 KiB
Plaintext
ca65 V2.18 - Debian 2.19-1
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Main file : MenuFirmware.asm
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Current file: MenuFirmware.asm
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000000r 1 ; Copyright Terence J. Boldt (c)2020-2024
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000000r 1 ; Use of this source code is governed by an MIT
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000000r 1 ; license that can be found in the LICENSE file.
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000000r 1
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000000r 1 ; This file contains the source for the firmware
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000000r 1 ; that displays the copyright message on boot
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000000r 1 ; and checks for the RPi status to be ready before
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000000r 1 ; attempting to boot
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000000r 1
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000000r 1 ;ProDOS Zero Page
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000000r 1 Command = $42 ;ProDOS Command
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000000r 1 Unit = $43 ;ProDOS unit (SDDD0000)
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000000r 1 BufferLo = $44
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000000r 1 BufferHi = $45
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000000r 1 BlockLo = $46
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000000r 1 BlockHi = $47
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000000r 1
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000000r 1 ; ProDOS Error Codes
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000000r 1 IOError = $27
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000000r 1 NoDevice = $28
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000000r 1 WriteProtect = $2B
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000000r 1
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000000r 1 InputByte = $c08e+SLOT*$10
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000000r 1 OutputByte = $c08d+SLOT*$10
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000000r 1 InputFlags = $c08b+SLOT*$10
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000000r 1 OutputFlags = $c087+SLOT*$10
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000000r 1
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000000r 1 ResetCommand = $00
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000000r 1 ReadBlockCommand = $01
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000000r 1 WriteBlockCommand = $02
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000000r 1 GetTimeCommand = $03
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000000r 1 ChangeDriveCommand = $04
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000000r 1 ExecCommand = $05
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000000r 1 LoadFileCommand = $06
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000000r 1 SaveFileCommand = $07
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000000r 1 MenuCommand = $08
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000000r 1
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000000r 1 Wait = $fca8
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000000r 1 PrintChar = $fded
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000000r 1 Home = $fc58
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000000r 1 ReadChar = $fd0c
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000000r 1 BasCalc = $fbc1
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000000r 1 htab = $24
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000000r 1 vtab = $25
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000000r 1 BasL = $28
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000000r 1 htab80 = $057b
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000000r 1
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000000r 1 .org SLOT*$100 + $C000
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00C700 1 ;ID bytes for booting and drive detection
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00C700 1 E0 20 cpx #$20 ;ID bytes for ProDOS and the
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00C702 1 E0 00 cpx #$00 ; Apple Autostart ROM
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00C704 1 E0 03 cpx #$03 ;
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00C706 1
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00C706 1 A2 70 ldx #SLOT*$10
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00C708 1 86 2B stx $2b
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00C70A 1 86 43 stx Unit
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00C70C 1
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00C70C 1 ;force EPROM to second page on boot
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00C70C 1 A9 3F lda #$3f ;set all flags high and page 1 of EPROMi
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00C70E 1 PageJump:
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00C70E 1 8D F7 C0 sta OutputFlags
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00C711 1 4C 19 C7 jmp Start
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00C714 1
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00C714 1 ;entry points for ProDOS
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00C714 1 DriverEntry:
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00C714 1 A9 0F lda #$0f ;set all flags high and page 0 of EPROM
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00C716 1 8D F7 C0 sta OutputFlags
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00C719 1 ;since the firmware page changes to 0, this falls through to the driver
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00C719 1
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00C719 1 Start:
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00C719 1 A9 F0 lda #$f0 ;restore COUT after PR# called
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00C71B 1 85 36 sta $36
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00C71D 1 A9 FD lda #$fd
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00C71F 1 85 37 sta $37
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00C721 1 ;jsr Home ;clear screen and show menu options
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00C721 1 A9 02 lda #$02
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00C723 1 85 25 sta vtab
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00C725 1 20 C1 FB jsr BasCalc
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00C728 1 A0 00 ldy #$00
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00C72A 1 84 24 sty htab
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00C72C 1 PrintString:
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00C72C 1 B9 AB C7 lda Text,y
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00C72F 1 F0 08 beq WaitForRPi
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00C731 1 09 80 ora #$80
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00C733 1 20 ED FD jsr PrintChar
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00C736 1 C8 iny
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00C737 1 D0 F3 bne PrintString
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00C739 1
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00C739 1 .if HW_TYPE = 0
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00C739 1
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00C739 1 WaitForRPi:
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00C739 1 2C FB C0 bit InputFlags
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00C73C 1 30 0D bmi Reset
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00C73E 1 A9 FF lda #$ff
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00C740 1 20 A8 FC jsr Wait
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00C743 1 A9 AE lda #'.'+$80
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00C745 1 20 ED FD jsr PrintChar
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00C748 1 4C 39 C7 jmp WaitForRPi
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00C74B 1
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00C74B 1 Reset:
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00C74B 1 A9 DF lda #'_'|$80
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00C74D 1 20 ED FD jsr PrintChar
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00C750 1 A9 00 lda #ResetCommand
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00C752 1 20 7B C7 jsr SendByte
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00C755 1 A9 88 lda #$88
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00C757 1 20 ED FD jsr PrintChar
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00C75A 1 A9 AE lda #'.'|$80
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00C75C 1 20 ED FD jsr PrintChar
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00C75F 1 20 93 C7 jsr GetByte
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00C762 1 F0 03 beq Ok
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00C764 1 4C 4B C7 jmp Reset
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00C767 1
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00C767 1 .else
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00C767 1
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00C767 1 WaitForRPi:
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00C767 1 @1:
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00C767 1 bit InputFlags
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00C767 1 bmi @2
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00C767 1 lda InputByte
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00C767 1 jmp @1
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00C767 1 @2:
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00C767 1 bit InputFlags
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00C767 1 bpl @4
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00C767 1 bvs @3
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00C767 1 lda #ResetCommand
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00C767 1 sta OutputByte
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00C767 1 @3:
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00C767 1 lda #$ff
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00C767 1 jsr Wait
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00C767 1 lda #'.'+$80
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00C767 1 jsr PrintChar
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00C767 1 jmp @2
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00C767 1 @4:
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00C767 1 lda #$ff
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00C767 1 jsr Wait
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00C767 1 @5:
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00C767 1 bit InputFlags
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00C767 1 bmi Ok
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00C767 1 lda InputByte
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00C767 1 jmp @5
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00C767 1
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00C767 1 .endif
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00C767 1
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00C767 1 Ok:
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00C767 1 A9 8D lda #$8D
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00C769 1 20 ED FD jsr PrintChar
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00C76C 1 A9 CF lda #'O'|$80
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00C76E 1 20 ED FD jsr PrintChar
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00C771 1 A9 CB lda #'K'|$80
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00C773 1 20 ED FD jsr PrintChar
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00C776 1
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00C776 1 Boot:
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00C776 1 A9 0F lda #$0f
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00C778 1 4C 0E C7 jmp PageJump
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00C77B 1
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00C77B 1 SendByte:
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00C77B 1 2C FB C0 bit InputFlags
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00C77E 1 70 FB bvs SendByte
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00C780 1 8D FD C0 sta OutputByte
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00C783 1 .if HW_TYPE = 0
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00C783 1 A9 3E lda #$3e ; set bit 0 low to indicate write started
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00C785 1 8D F7 C0 sta OutputFlags
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00C788 1 finishWrite:
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00C788 1 2C FB C0 bit InputFlags
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00C78B 1 50 FB bvc finishWrite
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00C78D 1 A9 3F lda #$3f
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00C78F 1 8D F7 C0 sta OutputFlags
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00C792 1 .endif
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00C792 1 60 rts
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00C793 1
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00C793 1 GetByte:
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00C793 1 .if HW_TYPE = 0
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00C793 1 A2 3D ldx #$3d ;set read flag low
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00C795 1 8E F7 C0 stx OutputFlags
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00C798 1 .endif
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00C798 1 waitRead:
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00C798 1 2C FB C0 bit InputFlags
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00C79B 1 30 FB bmi waitRead
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00C79D 1 AD FE C0 lda InputByte
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00C7A0 1 .if HW_TYPE = 0
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00C7A0 1 A2 3F ldx #$3f ;set all flags high
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00C7A2 1 8E F7 C0 stx OutputFlags
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00C7A5 1 finishRead:
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00C7A5 1 2C FB C0 bit InputFlags
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00C7A8 1 10 FB bpl finishRead
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00C7AA 1 .endif
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00C7AA 1 60 rts
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00C7AB 1
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00C7AB 1 Text:
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00C7AB 1 41 70 70 6C .byte "Apple2-IO-RPi",$8d
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00C7AF 1 65 32 2D 49
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00C7B3 1 4F 2D 52 50
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00C7B7 1 69 8D
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00C7B9 1 28 63 29 32 .byte "(c)2020-2024 Terence J. Boldt",$8d
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00C7BD 1 30 32 30 2D
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00C7C1 1 32 30 32 34
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00C7C5 1 20 54 65 72
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00C7C9 1 65 6E 63 65
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00C7CD 1 20 4A 2E 20
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00C7D1 1 42 6F 6C 64
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00C7D5 1 74 8D
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00C7D7 1 8D .byte $8d
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00C7D8 1 .if HW_TYPE = 0
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00C7D8 1 57 61 69 74 .byte "Waiting for RPi FW:0010..."
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00C7DC 1 69 6E 67 20
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00C7E0 1 66 6F 72 20
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00C7E4 1 52 50 69 20
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00C7E8 1 46 57 3A 30
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00C7EC 1 30 31 30 2E
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00C7F0 1 2E 2E
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00C7F2 1 .else
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00C7F2 1 .byte "Waiting for RPi FW:8010..."
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00C7F2 1 .endif
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00C7F2 1 end:
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00C7F2 1 00 .byte $00
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00C7F3 1
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00C7F3 1 00 00 00 00 .repeat 251-<end
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00C7F7 1 00 00 00 00
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00C7FB 1 00
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00C7FC 1 .byte 0
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00C7FC 1 .endrepeat
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00C7FC 1
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00C7FC 1 00 00 .byte 0,0 ;0000 blocks = check status
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00C7FE 1 07 .byte 7 ;bit set(0=status 1=read 2=write) unset(3=format, 4/5=number of volumes, 6=interruptable, 7=removable)
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00C7FF 1 14 .byte DriverEntry&$00FF ;low byte of entry
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00C800 1
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00C800 1
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