diff options
Diffstat (limited to 'engine/printer/printer_serial.asm')
| -rw-r--r-- | engine/printer/printer_serial.asm | 101 |
1 files changed, 48 insertions, 53 deletions
diff --git a/engine/printer/printer_serial.asm b/engine/printer/printer_serial.asm index 4e0d10851..e8f106ac4 100644 --- a/engine/printer/printer_serial.asm +++ b/engine/printer/printer_serial.asm @@ -1,4 +1,4 @@ -Printer_StartTransmission: ; 84000 +Printer_StartTransmission: ld hl, wGameboyPrinterRAM ld bc, wGameboyPrinterRAMEnd - wGameboyPrinterRAM xor a @@ -14,9 +14,8 @@ Printer_StartTransmission: ; 84000 xor a ld [wJumptableIndex], a ret -; 84022 -PrinterJumptableIteration: ; 84022 +PrinterJumptableIteration: ld a, [wJumptableIndex] ld e, a ld d, 0 @@ -27,9 +26,8 @@ PrinterJumptableIteration: ; 84022 ld h, [hl] ld l, a jp hl -; 84031 -.Jumptable: ; 84031 (21:4031) +.Jumptable: dw Print_InitPrinterHandshake ; 00 dw Printer_CheckConnectionStatus ; 01 dw Printer_WaitSerial ; 02 @@ -53,33 +51,33 @@ PrinterJumptableIteration: ; 84022 dw Printer_WaitLoopBack ; 12 dw Printer_WaitLoopBack_ ; 13 -Printer_NextSection: ; 84059 (21:4059) +Printer_NextSection: ld hl, wJumptableIndex inc [hl] ret -Printer_PrevSection: ; 8405e (21:405e) +Printer_PrevSection: ld hl, wJumptableIndex dec [hl] ret -Printer_Quit: ; 84063 (21:4063) +Printer_Quit: xor a ld [wPrinterStatusFlags], a ld hl, wJumptableIndex set 7, [hl] ret -Printer_NextSection_: ; 8406d (21:406d) +Printer_NextSection_: call Printer_NextSection ret -Printer_SectionOne: ; 84071 (21:4071) +Printer_SectionOne: ld a, $1 ld [wJumptableIndex], a ret -Print_InitPrinterHandshake: ; 84077 (21:4077) +Print_InitPrinterHandshake: call Printer_ResetData ld hl, PrinterDataPacket1 call Printer_CopyPacket @@ -94,7 +92,7 @@ Print_InitPrinterHandshake: ; 84077 (21:4077) ld [wPrinterStatus], a ret -Printer_StartTransmittingTilemap: ; 84099 (21:4099) +Printer_StartTransmittingTilemap: call Printer_ResetData ; check ??? ld hl, wPrinterRowIndex @@ -118,7 +116,7 @@ Printer_StartTransmittingTilemap: ; 84099 (21:4099) ld [wPrinterStatus], a ret -Printer_EndTilemapTransmission: ; 840c5 (21:40c5) +Printer_EndTilemapTransmission: ; ensure that we go from here to routine 7 ld a, $6 ld [wJumptableIndex], a @@ -133,7 +131,7 @@ Printer_EndTilemapTransmission: ; 840c5 (21:40c5) call Printer_WaitHandshake ret -Printer_SignalSendHeader: ; 840de (21:40de) +Printer_SignalSendHeader: call Printer_ResetData ld hl, PrinterDataPacket2 ; signal request print call Printer_CopyPacket @@ -151,7 +149,7 @@ Printer_SignalSendHeader: ; 840de (21:40de) ld [wPrinterStatus], a ret -Printer_SignalLoopBack: ; 84103 (21:4103) +Printer_SignalLoopBack: call Printer_ResetData ; send packet 1 ld hl, PrinterDataPacket1 ; signal no transmission @@ -166,7 +164,7 @@ Printer_SignalLoopBack: ; 84103 (21:4103) call Printer_WaitHandshake ret -Printer_WaitSerial: ; 84120 (21:4120) +Printer_WaitSerial: ld hl, wPrinterSerialFrameDelay inc [hl] ld a, [hl] @@ -177,7 +175,7 @@ Printer_WaitSerial: ; 84120 (21:4120) call Printer_NextSection ret -Printer_WaitSerialAndLoopBack2: ; 8412e (21:412e) +Printer_WaitSerialAndLoopBack2: ld hl, wPrinterSerialFrameDelay inc [hl] ld a, [hl] @@ -191,7 +189,7 @@ Printer_WaitSerialAndLoopBack2: ; 8412e (21:412e) call Printer_PrevSection ret -Printer_CheckConnectionStatus: ; 84143 (21:4143) +Printer_CheckConnectionStatus: ld a, [wPrinterOpcode] and a ret nz @@ -224,7 +222,7 @@ Printer_CheckConnectionStatus: ; 84143 (21:4143) ld [wJumptableIndex], a ret -Printer_TransmissionLoop: ; 84180 (21:4180) +Printer_TransmissionLoop: ld a, [wPrinterOpcode] and a ret nz @@ -246,7 +244,7 @@ Printer_TransmissionLoop: ; 84180 (21:4180) ld [wJumptableIndex], a ret -Printer_WaitUntilFinished: ; 841a1 (21:41a1) +Printer_WaitUntilFinished: ld a, [wPrinterOpcode] and a ret nz @@ -256,9 +254,9 @@ Printer_WaitUntilFinished: ; 841a1 (21:41a1) call Printer_NextSection ret -Printer_WaitLoopBack: ; 841b0 (21:41b0) +Printer_WaitLoopBack: call Printer_NextSection -Printer_WaitLoopBack_: ; 841b3 (21:41b3) +Printer_WaitLoopBack_: ld a, [wPrinterOpcode] and a ret nz @@ -269,7 +267,7 @@ Printer_WaitLoopBack_: ; 841b3 (21:41b3) ld [wJumptableIndex], a ret -Printer_WaitHandshake: ; 841c3 (21:41c3) +Printer_WaitHandshake: .loop ld a, [wPrinterOpcode] and a @@ -287,7 +285,7 @@ Printer_WaitHandshake: ; 841c3 (21:41c3) ld [rSC], a ret -Printer_CopyPacket: ; 841e2 (21:41e2) +Printer_CopyPacket: ld a, [hli] ld [wPrinterData], a ld a, [hli] @@ -302,7 +300,7 @@ Printer_CopyPacket: ; 841e2 (21:41e2) ld [wPrinterChecksum + 1], a ret -Printer_ResetData: ; 841fb (21:41fb) +Printer_ResetData: xor a ld hl, wPrinterData ld [hli], a @@ -320,7 +318,7 @@ Printer_ResetData: ; 841fb (21:41fb) call Printer_ByteFill ret -Printer_ComputeChecksum: ; 84219 (21:4219) +Printer_ComputeChecksum: ld hl, 0 ld bc, 4 ld de, wPrinterData @@ -337,7 +335,7 @@ Printer_ComputeChecksum: ; 84219 (21:4219) ld [wPrinterChecksum + 1], a ret -.ComputeChecksum: ; 8423c (21:423c) +.ComputeChecksum: .loop ld a, [de] inc de @@ -352,7 +350,7 @@ Printer_ComputeChecksum: ; 84219 (21:4219) jr nz, .loop ret -Printer_StageHeaderForSend: ; 84249 (21:4249) +Printer_StageHeaderForSend: ld a, $1 ld [wGameboyPrinter2bppSource + 0], a ld a, [wcbfa] @@ -363,7 +361,7 @@ Printer_StageHeaderForSend: ; 84249 (21:4249) ld [wGameboyPrinter2bppSource + 3], a ret -Printer_Convert2RowsTo2bpp: ; 84260 (21:4260) +Printer_Convert2RowsTo2bpp: ; de = wPrinterTileMapBuffer + 2 * SCREEN_WIDTH * ([wPrinterQueueLength] - [wPrinterRowIndex]) ld a, [wPrinterRowIndex] xor $ff @@ -420,7 +418,7 @@ Printer_Convert2RowsTo2bpp: ; 84260 (21:4260) jr nz, .loop2 ret -Printer_ByteFill: ; 842ab +Printer_ByteFill: push de ld e, a .loop @@ -433,7 +431,6 @@ Printer_ByteFill: ; 842ab ld a, e pop de ret -; 842b7 PrinterDataPacket1: db 1, 0, $00, 0 @@ -453,9 +450,8 @@ PrinterDataPacket5: ; unused PrinterDataPacket6: ; unused db 15, 0, $00, 0 dw 15 -; 842db -_PrinterReceive:: ; 842db +_PrinterReceive:: ld a, [wPrinterOpcode] add a ld e, a @@ -466,9 +462,8 @@ _PrinterReceive:: ; 842db ld h, [hl] ld l, a jp hl -; 842ea -.Jumptable: ; 842ea (21:42ea) +.Jumptable: dw Printer_DoNothing ; 00 dw Printer_Send0x33 ; 01 @@ -505,45 +500,45 @@ _PrinterReceive:: ; 842db dw Printer_ReceiveTowPrinterHandshakeAndSend0x00 ; 1e dw Printer_ReceiveTowPrinterStatusFlagsAndExitSendLoop ; 1f -Printer_NextInstruction: ; 8432a (21:432a) +Printer_NextInstruction: ld hl, wPrinterOpcode inc [hl] ret -Printer_DoNothing: ; 8432f (21:432f) +Printer_DoNothing: ret -Printer_Send0x33: ; 84330 (21:4330) +Printer_Send0x33: ld a, $33 call Printer_SerialSend call Printer_NextInstruction ret -Printer_SendPrinterData1: ; 84339 (21:4339) +Printer_SendPrinterData1: ld a, [wPrinterData] call Printer_SerialSend call Printer_NextInstruction ret -Printer_SendPrinterData2: ; 84343 (21:4343) +Printer_SendPrinterData2: ld a, [wPrinterData + 1] call Printer_SerialSend call Printer_NextInstruction ret -Printer_SendPrinterData3: ; 8434d (21:434d) +Printer_SendPrinterData3: ld a, [wPrinterData + 2] call Printer_SerialSend call Printer_NextInstruction ret -Printer_SendPrinterData4: ; 84357 (21:4357) +Printer_SendPrinterData4: ld a, [wPrinterData + 3] call Printer_SerialSend call Printer_NextInstruction ret -Printer_SendNextByte: ; 84361 (21:4361) +Printer_SendNextByte: ; decrement 16-bit counter ld hl, wPrinterSendByteCounter ld a, [hli] @@ -573,25 +568,25 @@ Printer_SendNextByte: ; 84361 (21:4361) .done call Printer_NextInstruction -Printer_SendwPrinterChecksumLo: ; 8438b (21:438b) +Printer_SendwPrinterChecksumLo: ld a, [wPrinterChecksum] call Printer_SerialSend call Printer_NextInstruction ret -Printer_SendwPrinterChecksumHi: ; 84395 (21:4395) +Printer_SendwPrinterChecksumHi: ld a, [wPrinterChecksum + 1] call Printer_SerialSend call Printer_NextInstruction ret -Printer_Send0x00: ; 8439f (21:439f) +Printer_Send0x00: ld a, $0 call Printer_SerialSend call Printer_NextInstruction ret -Printer_ReceiveTowPrinterHandshakeAndSend0x00: ; 843a8 (21:43a8) +Printer_ReceiveTowPrinterHandshakeAndSend0x00: ld a, [rSB] ld [wPrinterHandshake], a ld a, $0 @@ -599,32 +594,32 @@ Printer_ReceiveTowPrinterHandshakeAndSend0x00: ; 843a8 (21:43a8) call Printer_NextInstruction ret -Printer_ReceiveTowPrinterStatusFlagsAndExitSendLoop: ; 843b6 (21:43b6) +Printer_ReceiveTowPrinterStatusFlagsAndExitSendLoop: ld a, [rSB] ld [wPrinterStatusFlags], a xor a ld [wPrinterOpcode], a ret -Printer_Send0x0f: ; 843c0 (21:43c0) +Printer_Send0x0f: ld a, $f call Printer_SerialSend call Printer_NextInstruction ret -Printer_Send0x00_: ; 843c9 (21:43c9) +Printer_Send0x00_: ld a, $0 call Printer_SerialSend call Printer_NextInstruction ret -Printer_Send0x08: ; 843d2 (21:43d2) +Printer_Send0x08: ld a, $8 call Printer_SerialSend call Printer_NextInstruction ret -Printer_SerialSend: ; 843db (21:43db) +Printer_SerialSend: ld [rSB], a ld a, $1 ; switch to internal clock ld [rSC], a @@ -632,7 +627,7 @@ Printer_SerialSend: ; 843db (21:43db) ld [rSC], a ret -Printer_ReceiveTowPrinterStatusFlagsAndExitSendLoop_: ; 843e6 (21:43e6) +Printer_ReceiveTowPrinterStatusFlagsAndExitSendLoop_: ld a, [rSB] ld [wPrinterStatusFlags], a xor a |