mirror of
https://gitlab.com/xCrystal/pokecrystal-board.git
synced 2024-11-16 11:27:33 -08:00
e6ea1889fb
The former is arguably misleading (as you don’t access the memory location in hl to retrieve the jump location), and is consequently deprecated in newer versions of rgbds. This fix silences these deprecation warnings.
646 lines
12 KiB
NASM
Executable File
646 lines
12 KiB
NASM
Executable File
Printer_StartTransmission: ; 84000
|
|
ld hl, wGameboyPrinterRAM
|
|
ld bc, wGameboyPrinterRAMEnd - wGameboyPrinterRAM
|
|
xor a
|
|
call Printer_ByteFill
|
|
xor a
|
|
ld [rSB], a
|
|
ld [rSC], a
|
|
ld [wPrinterOpcode], a
|
|
ld hl, wPrinterConnectionOpen
|
|
set 0, [hl]
|
|
ld a, [GBPrinter]
|
|
ld [wGBPrinterSettings], a
|
|
xor a
|
|
ld [wJumptableIndex], a
|
|
ret
|
|
; 84022
|
|
|
|
PrinterJumptableIteration: ; 84022
|
|
ld a, [wJumptableIndex]
|
|
ld e, a
|
|
ld d, 0
|
|
ld hl, .Jumptable
|
|
add hl, de
|
|
add hl, de
|
|
ld a, [hli]
|
|
ld h, [hl]
|
|
ld l, a
|
|
jp hl
|
|
; 84031
|
|
|
|
|
|
.Jumptable: ; 84031 (21:4031)
|
|
|
|
dw Print_InitPrinterHandshake ; 00
|
|
dw Printer_CheckConnectionStatus ; 01
|
|
dw Printer_WaitSerial ; 02
|
|
dw Printer_StartTransmittingTilemap ; 03
|
|
dw Printer_TransmissionLoop ; 04
|
|
dw Printer_WaitSerialAndLoopBack2 ; 05
|
|
|
|
dw Printer_EndTilemapTransmission ; 06
|
|
dw Printer_TransmissionLoop ; 07
|
|
dw Printer_WaitSerial ; 08
|
|
dw Printer_SignalSendHeader ; 09
|
|
dw Printer_TransmissionLoop ; 0a
|
|
dw Printer_WaitSerial ; 0b
|
|
dw Printer_WaitUntilFinished ; 0c
|
|
dw Printer_Quit ; 0d
|
|
|
|
dw Printer_NextSection_ ; 0e
|
|
dw Printer_WaitSerial ; 0f
|
|
dw Printer_SignalLoopBack ; 10
|
|
dw Printer_SectionOne ; 11
|
|
dw Printer_WaitLoopBack ; 12
|
|
dw Printer_WaitLoopBack_ ; 13
|
|
|
|
|
|
Printer_NextSection: ; 84059 (21:4059)
|
|
ld hl, wJumptableIndex
|
|
inc [hl]
|
|
ret
|
|
|
|
Printer_PrevSection: ; 8405e (21:405e)
|
|
ld hl, wJumptableIndex
|
|
dec [hl]
|
|
ret
|
|
|
|
Printer_Quit: ; 84063 (21:4063)
|
|
xor a
|
|
ld [wPrinterStatusFlags], a
|
|
ld hl, wJumptableIndex
|
|
set 7, [hl]
|
|
ret
|
|
|
|
Printer_NextSection_: ; 8406d (21:406d)
|
|
call Printer_NextSection
|
|
ret
|
|
|
|
Printer_SectionOne: ; 84071 (21:4071)
|
|
ld a, $1
|
|
ld [wJumptableIndex], a
|
|
ret
|
|
|
|
Print_InitPrinterHandshake: ; 84077 (21:4077)
|
|
call Printer_ResetData
|
|
ld hl, PrinterDataPacket1
|
|
call Printer_CopyPacket
|
|
xor a
|
|
ld [wPrinterSendByteCounter], a
|
|
ld [wPrinterSendByteCounter + 1], a
|
|
ld a, [wPrinterQueueLength]
|
|
ld [wPrinterRowIndex], a
|
|
call Printer_NextSection
|
|
call Printer_WaitHandshake
|
|
ld a, PRINTER_STATUS_CHECKING
|
|
ld [wPrinterStatus], a
|
|
ret
|
|
|
|
Printer_StartTransmittingTilemap: ; 84099 (21:4099)
|
|
call Printer_ResetData
|
|
; check ???
|
|
ld hl, wPrinterRowIndex
|
|
ld a, [hl]
|
|
and a
|
|
jr z, Printer_EndTilemapTransmission
|
|
; send packet 3
|
|
ld hl, PrinterDataPacket3 ; signal start of transmission
|
|
call Printer_CopyPacket
|
|
; prepare to send 40 tiles
|
|
call Printer_Convert2RowsTo2bpp
|
|
ld a, (40 tiles) % $100
|
|
ld [wPrinterSendByteCounter], a
|
|
ld a, (40 tiles) / $100
|
|
ld [wPrinterSendByteCounter + 1], a
|
|
; compute the checksum
|
|
call Printer_ComputeChecksum
|
|
call Printer_NextSection
|
|
call Printer_WaitHandshake
|
|
ld a, PRINTER_STATUS_TRANSMITTING
|
|
ld [wPrinterStatus], a
|
|
ret
|
|
|
|
Printer_EndTilemapTransmission: ; 840c5 (21:40c5)
|
|
; ensure that we go from here to routine 7
|
|
ld a, $6
|
|
ld [wJumptableIndex], a
|
|
; send packet 4
|
|
ld hl, PrinterDataPacket4 ; signal no transmission
|
|
call Printer_CopyPacket
|
|
; send no tile data
|
|
xor a
|
|
ld [wPrinterSendByteCounter], a
|
|
ld [wPrinterSendByteCounter + 1], a
|
|
call Printer_NextSection
|
|
call Printer_WaitHandshake
|
|
ret
|
|
|
|
Printer_SignalSendHeader: ; 840de (21:40de)
|
|
call Printer_ResetData
|
|
ld hl, PrinterDataPacket2 ; signal request print
|
|
call Printer_CopyPacket
|
|
; prepare to send 1 tile
|
|
call Printer_StageHeaderForSend
|
|
ld a, 4 % $100
|
|
ld [wPrinterSendByteCounter], a
|
|
ld a, 4 / $100
|
|
ld [wPrinterSendByteCounter + 1], a
|
|
; compute the checksum
|
|
call Printer_ComputeChecksum
|
|
call Printer_NextSection
|
|
call Printer_WaitHandshake
|
|
ld a, PRINTER_STATUS_PRINTING
|
|
ld [wPrinterStatus], a
|
|
ret
|
|
|
|
Printer_SignalLoopBack: ; 84103 (21:4103)
|
|
call Printer_ResetData
|
|
; send packet 1
|
|
ld hl, PrinterDataPacket1 ; signal no transmission
|
|
call Printer_CopyPacket
|
|
; send no tile data
|
|
xor a
|
|
ld [wPrinterSendByteCounter], a
|
|
ld [wPrinterSendByteCounter + 1], a
|
|
ld a, [wPrinterQueueLength]
|
|
ld [wPrinterRowIndex], a
|
|
call Printer_NextSection
|
|
call Printer_WaitHandshake
|
|
ret
|
|
|
|
Printer_WaitSerial: ; 84120 (21:4120)
|
|
ld hl, wPrinterSerialFrameDelay
|
|
inc [hl]
|
|
ld a, [hl]
|
|
cp $6
|
|
ret c
|
|
xor a
|
|
ld [hl], a
|
|
call Printer_NextSection
|
|
ret
|
|
|
|
Printer_WaitSerialAndLoopBack2: ; 8412e (21:412e)
|
|
ld hl, wPrinterSerialFrameDelay
|
|
inc [hl]
|
|
ld a, [hl]
|
|
cp $6
|
|
ret c
|
|
xor a
|
|
ld [hl], a
|
|
ld hl, wPrinterRowIndex
|
|
dec [hl]
|
|
call Printer_PrevSection
|
|
call Printer_PrevSection
|
|
ret
|
|
|
|
Printer_CheckConnectionStatus: ; 84143 (21:4143)
|
|
ld a, [wPrinterOpcode]
|
|
and a
|
|
ret nz
|
|
ld a, [wPrinterHandshake]
|
|
cp $ff
|
|
jr nz, .printer_connected
|
|
ld a, [wPrinterStatusFlags]
|
|
cp $ff
|
|
jr z, .printer_error
|
|
|
|
.printer_connected
|
|
ld a, [wPrinterHandshake]
|
|
cp $81
|
|
jr nz, .printer_error
|
|
ld a, [wPrinterStatusFlags]
|
|
cp $0
|
|
jr nz, .printer_error
|
|
ld hl, wPrinterConnectionOpen
|
|
set 1, [hl]
|
|
ld a, $5
|
|
ld [wHandshakeFrameDelay], a
|
|
call Printer_NextSection
|
|
ret
|
|
|
|
.printer_error
|
|
ld a, $ff
|
|
ld [wPrinterHandshake], a
|
|
ld [wPrinterStatusFlags], a
|
|
ld a, $e
|
|
ld [wJumptableIndex], a
|
|
ret
|
|
|
|
Printer_TransmissionLoop: ; 84180 (21:4180)
|
|
ld a, [wPrinterOpcode]
|
|
and a
|
|
ret nz
|
|
ld a, [wPrinterStatusFlags]
|
|
and $f0
|
|
jr nz, .enter_wait_loop
|
|
ld a, [wPrinterStatusFlags]
|
|
and $1
|
|
jr nz, .cycle_back
|
|
call Printer_NextSection
|
|
ret
|
|
|
|
.cycle_back
|
|
call Printer_PrevSection
|
|
ret
|
|
|
|
.enter_wait_loop
|
|
ld a, $12 ; Printer_WaitLoopBack
|
|
ld [wJumptableIndex], a
|
|
ret
|
|
|
|
Printer_WaitUntilFinished: ; 841a1 (21:41a1)
|
|
ld a, [wPrinterOpcode]
|
|
and a
|
|
ret nz
|
|
ld a, [wPrinterStatusFlags]
|
|
and $f3
|
|
ret nz
|
|
call Printer_NextSection
|
|
ret
|
|
|
|
Printer_WaitLoopBack: ; 841b0 (21:41b0)
|
|
call Printer_NextSection
|
|
Printer_WaitLoopBack_: ; 841b3 (21:41b3)
|
|
ld a, [wPrinterOpcode]
|
|
and a
|
|
ret nz
|
|
ld a, [wPrinterStatusFlags]
|
|
and $f0
|
|
ret nz
|
|
xor a
|
|
ld [wJumptableIndex], a
|
|
ret
|
|
|
|
Printer_WaitHandshake: ; 841c3 (21:41c3)
|
|
.loop
|
|
ld a, [wPrinterOpcode]
|
|
and a
|
|
jr nz, .loop
|
|
xor a
|
|
ld [wPrinterSendByteOffset], a
|
|
ld [wPrinterSendByteOffset + 1], a
|
|
ld a, $1
|
|
ld [wPrinterOpcode], a
|
|
ld a, $88
|
|
ld [rSB], a
|
|
ld a, $1
|
|
ld [rSC], a
|
|
ld a, $81
|
|
ld [rSC], a
|
|
ret
|
|
|
|
Printer_CopyPacket: ; 841e2 (21:41e2)
|
|
ld a, [hli]
|
|
ld [wca82], a
|
|
ld a, [hli]
|
|
ld [wca83], a
|
|
ld a, [hli]
|
|
ld [wca84], a
|
|
ld a, [hli]
|
|
ld [wca85], a
|
|
ld a, [hli]
|
|
ld [wPrinterChecksum], a
|
|
ld a, [hl]
|
|
ld [wPrinterChecksum + 1], a
|
|
ret
|
|
|
|
Printer_ResetData: ; 841fb (21:41fb)
|
|
xor a
|
|
ld hl, wca82
|
|
ld [hli], a
|
|
ld [hli], a
|
|
ld [hli], a
|
|
ld [hl], a
|
|
ld hl, wPrinterChecksum
|
|
ld [hli], a
|
|
ld [hl], a
|
|
xor a
|
|
ld [wPrinterSendByteCounter], a
|
|
ld [wPrinterSendByteCounter + 1], a
|
|
ld hl, wGameboyPrinterRAM
|
|
ld bc, wGameboyPrinter2bppSourceEnd - wGameboyPrinter2bppSource
|
|
call Printer_ByteFill
|
|
ret
|
|
|
|
Printer_ComputeChecksum: ; 84219 (21:4219)
|
|
ld hl, 0
|
|
ld bc, 4
|
|
ld de, wca82
|
|
call .ComputeChecksum
|
|
ld a, [wPrinterSendByteCounter]
|
|
ld c, a
|
|
ld a, [wPrinterSendByteCounter + 1]
|
|
ld b, a
|
|
ld de, wGameboyPrinterRAM
|
|
call .ComputeChecksum
|
|
ld a, l
|
|
ld [wPrinterChecksum], a
|
|
ld a, h
|
|
ld [wPrinterChecksum + 1], a
|
|
ret
|
|
|
|
.ComputeChecksum: ; 8423c (21:423c)
|
|
.loop
|
|
ld a, [de]
|
|
inc de
|
|
add l
|
|
jr nc, .no_overflow
|
|
inc h
|
|
.no_overflow
|
|
ld l, a
|
|
dec bc
|
|
ld a, c
|
|
or b
|
|
jr nz, .loop
|
|
ret
|
|
|
|
Printer_StageHeaderForSend: ; 84249 (21:4249)
|
|
ld a, $1
|
|
ld [wGameboyPrinter2bppSource + 0], a
|
|
ld a, [wcbfa]
|
|
ld [wGameboyPrinter2bppSource + 1], a
|
|
ld a, %11100100
|
|
ld [wGameboyPrinter2bppSource + 2], a
|
|
ld a, [wGBPrinterSettings]
|
|
ld [wGameboyPrinter2bppSource + 3], a
|
|
ret
|
|
|
|
Printer_Convert2RowsTo2bpp: ; 84260 (21:4260)
|
|
; de = wPrinterTileMapBuffer + 2 * SCREEN_WIDTH * ([wPrinterQueueLength] - [wPrinterRowIndex])
|
|
ld a, [wPrinterRowIndex]
|
|
xor $ff
|
|
ld d, a
|
|
ld a, [wPrinterQueueLength]
|
|
inc a
|
|
add d
|
|
ld hl, wPrinterTileMapBuffer
|
|
ld de, 2 * SCREEN_WIDTH
|
|
.loop1
|
|
and a
|
|
jr z, .okay1
|
|
add hl, de
|
|
dec a
|
|
jr .loop1
|
|
.okay1
|
|
ld e, l
|
|
ld d, h
|
|
ld hl, wGameboyPrinter2bppSource
|
|
ld c, 2 * SCREEN_WIDTH
|
|
.loop2
|
|
ld a, [de]
|
|
inc de
|
|
push bc
|
|
push de
|
|
push hl
|
|
; convert tile index to vram address
|
|
swap a
|
|
ld d, a
|
|
and $f0
|
|
ld e, a
|
|
ld a, d
|
|
and $f
|
|
ld d, a
|
|
and $8
|
|
ld a, d
|
|
jr nz, .vtiles_8xxx
|
|
or $90
|
|
jr .got_vtile_addr
|
|
|
|
.vtiles_8xxx
|
|
or $80
|
|
.got_vtile_addr
|
|
ld d, a
|
|
; copy 1 vtile to hl
|
|
lb bc, BANK(Printer_Convert2RowsTo2bpp), 1
|
|
call Request2bpp
|
|
pop hl
|
|
ld de, 1 tiles
|
|
add hl, de
|
|
pop de
|
|
pop bc
|
|
dec c
|
|
jr nz, .loop2
|
|
ret
|
|
|
|
Printer_ByteFill: ; 842ab
|
|
push de
|
|
ld e, a
|
|
.loop
|
|
ld [hl], e
|
|
inc hl
|
|
dec bc
|
|
ld a, c
|
|
or b
|
|
jr nz, .loop
|
|
ld a, e
|
|
pop de
|
|
ret
|
|
; 842b7
|
|
|
|
PrinterDataPacket1:
|
|
db 1, 0, $00, 0
|
|
dw 1
|
|
PrinterDataPacket2:
|
|
db 2, 0, $04, 0
|
|
dw 0
|
|
PrinterDataPacket3:
|
|
db 4, 0, $80, 2
|
|
dw 0
|
|
PrinterDataPacket4:
|
|
db 4, 0, $00, 0
|
|
dw 4
|
|
PrinterDataPacket5: ; unused
|
|
db 8, 0, $00, 0
|
|
dw 8
|
|
PrinterDataPacket6: ; unused
|
|
db 15, 0, $00, 0
|
|
dw 15
|
|
; 842db
|
|
|
|
_PrinterReceive:: ; 842db
|
|
ld a, [wPrinterOpcode]
|
|
add a
|
|
ld e, a
|
|
ld d, 0
|
|
ld hl, .Jumptable
|
|
add hl, de
|
|
ld a, [hli]
|
|
ld h, [hl]
|
|
ld l, a
|
|
jp hl
|
|
; 842ea
|
|
|
|
|
|
.Jumptable: ; 842ea (21:42ea)
|
|
dw Printer_DoNothing ; 00
|
|
|
|
dw Printer_Send0x33 ; 01
|
|
dw Printer_Sendwca82 ; 02
|
|
dw Printer_Sendwca83 ; 03
|
|
dw Printer_Sendwca84 ; 04
|
|
dw Printer_Sendwca85 ; 05
|
|
dw Printer_SendNextByte ; 06
|
|
dw Printer_SendwPrinterChecksumLo ; 07
|
|
dw Printer_SendwPrinterChecksumHi ; 08
|
|
dw Printer_Send0x00 ; 09
|
|
dw Printer_ReceiveTowPrinterHandshakeAndSend0x00 ; 0a
|
|
dw Printer_ReceiveTowPrinterStatusFlagsAndExitSendLoop ; 0b
|
|
|
|
dw Printer_Send0x33 ; 0c triggered by AskSerial
|
|
dw Printer_Send0x0f ; 0d
|
|
dw Printer_Send0x00_ ; 0e
|
|
dw Printer_Send0x00_ ; 0f
|
|
dw Printer_Send0x00_ ; 10
|
|
dw Printer_Send0x0f ; 11
|
|
dw Printer_Send0x00_ ; 12
|
|
dw Printer_Send0x00 ; 13
|
|
dw Printer_ReceiveTowPrinterHandshakeAndSend0x00 ; 14
|
|
dw Printer_ReceiveTowPrinterStatusFlagsAndExitSendLoop_ ; 15
|
|
|
|
dw Printer_Send0x33 ; 16 triggered by pressing B
|
|
dw Printer_Send0x08 ; 17
|
|
dw Printer_Send0x00_ ; 18
|
|
dw Printer_Send0x00_ ; 19
|
|
dw Printer_Send0x00_ ; 1a
|
|
dw Printer_Send0x08 ; 1b
|
|
dw Printer_Send0x00_ ; 1c
|
|
dw Printer_Send0x00 ; 1d
|
|
dw Printer_ReceiveTowPrinterHandshakeAndSend0x00 ; 1e
|
|
dw Printer_ReceiveTowPrinterStatusFlagsAndExitSendLoop ; 1f
|
|
|
|
|
|
Printer_NextInstruction: ; 8432a (21:432a)
|
|
ld hl, wPrinterOpcode
|
|
inc [hl]
|
|
ret
|
|
|
|
Printer_DoNothing: ; 8432f (21:432f)
|
|
ret
|
|
|
|
Printer_Send0x33: ; 84330 (21:4330)
|
|
ld a, $33
|
|
call Printer_SerialSend
|
|
call Printer_NextInstruction
|
|
ret
|
|
|
|
Printer_Sendwca82: ; 84339 (21:4339)
|
|
ld a, [wca82]
|
|
call Printer_SerialSend
|
|
call Printer_NextInstruction
|
|
ret
|
|
|
|
Printer_Sendwca83: ; 84343 (21:4343)
|
|
ld a, [wca83]
|
|
call Printer_SerialSend
|
|
call Printer_NextInstruction
|
|
ret
|
|
|
|
Printer_Sendwca84: ; 8434d (21:434d)
|
|
ld a, [wca84]
|
|
call Printer_SerialSend
|
|
call Printer_NextInstruction
|
|
ret
|
|
|
|
Printer_Sendwca85: ; 84357 (21:4357)
|
|
ld a, [wca85]
|
|
call Printer_SerialSend
|
|
call Printer_NextInstruction
|
|
ret
|
|
|
|
Printer_SendNextByte: ; 84361 (21:4361)
|
|
; decrement 16-bit counter
|
|
ld hl, wPrinterSendByteCounter
|
|
ld a, [hli]
|
|
ld d, [hl]
|
|
ld e, a
|
|
or d
|
|
jr z, .done
|
|
dec de
|
|
ld [hl], d
|
|
dec hl
|
|
ld [hl], e
|
|
|
|
ld a, [wPrinterSendByteOffset]
|
|
ld e, a
|
|
ld a, [wPrinterSendByteOffset + 1]
|
|
ld d, a
|
|
ld hl, wGameboyPrinterRAM
|
|
add hl, de
|
|
inc de
|
|
ld a, e
|
|
ld [wPrinterSendByteOffset], a
|
|
ld a, d
|
|
ld [wPrinterSendByteOffset + 1], a
|
|
ld a, [hl]
|
|
call Printer_SerialSend
|
|
ret
|
|
|
|
.done
|
|
call Printer_NextInstruction
|
|
Printer_SendwPrinterChecksumLo: ; 8438b (21:438b)
|
|
ld a, [wPrinterChecksum]
|
|
call Printer_SerialSend
|
|
call Printer_NextInstruction
|
|
ret
|
|
|
|
Printer_SendwPrinterChecksumHi: ; 84395 (21:4395)
|
|
ld a, [wPrinterChecksum + 1]
|
|
call Printer_SerialSend
|
|
call Printer_NextInstruction
|
|
ret
|
|
|
|
Printer_Send0x00: ; 8439f (21:439f)
|
|
ld a, $0
|
|
call Printer_SerialSend
|
|
call Printer_NextInstruction
|
|
ret
|
|
|
|
Printer_ReceiveTowPrinterHandshakeAndSend0x00: ; 843a8 (21:43a8)
|
|
ld a, [rSB]
|
|
ld [wPrinterHandshake], a
|
|
ld a, $0
|
|
call Printer_SerialSend
|
|
call Printer_NextInstruction
|
|
ret
|
|
|
|
Printer_ReceiveTowPrinterStatusFlagsAndExitSendLoop: ; 843b6 (21:43b6)
|
|
ld a, [rSB]
|
|
ld [wPrinterStatusFlags], a
|
|
xor a
|
|
ld [wPrinterOpcode], a
|
|
ret
|
|
|
|
Printer_Send0x0f: ; 843c0 (21:43c0)
|
|
ld a, $f
|
|
call Printer_SerialSend
|
|
call Printer_NextInstruction
|
|
ret
|
|
|
|
Printer_Send0x00_: ; 843c9 (21:43c9)
|
|
ld a, $0
|
|
call Printer_SerialSend
|
|
call Printer_NextInstruction
|
|
ret
|
|
|
|
Printer_Send0x08: ; 843d2 (21:43d2)
|
|
ld a, $8
|
|
call Printer_SerialSend
|
|
call Printer_NextInstruction
|
|
ret
|
|
|
|
Printer_SerialSend: ; 843db (21:43db)
|
|
ld [rSB], a
|
|
ld a, $1 ; switch to internal clock
|
|
ld [rSC], a
|
|
ld a, $81 ; start transfer
|
|
ld [rSC], a
|
|
ret
|
|
|
|
Printer_ReceiveTowPrinterStatusFlagsAndExitSendLoop_: ; 843e6 (21:43e6)
|
|
ld a, [rSB]
|
|
ld [wPrinterStatusFlags], a
|
|
xor a
|
|
ld [wPrinterOpcode], a
|
|
ret
|