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silentlink.asm

Timestamp:

08/02/09 02:58:09 (3 years ago)

Author:

brandonlw

Message:

Add the screenshot packet response so we can start taking screenshots, and add some more to the proposed boot loader

Files:

r26	r29
8	8	EXTERN JErrorNo,NZIf83Plus,CheckLinkLines,EnableLinkAssist,DisableLinkAssist,ContinueGetByte,Get3Bytes
9	9	EXTERN DispHexA,LdHLInd,SendAcknowledge,ReceiveHeaderPacket,SendSkipExitPacket,Get4BytesNC,SendCommandA
	10	EXTERN Send4Bytes,SendCAndAddToChecksum,LCDDelay,_LCD_COMMAND,SendAByte,SetXAutoIncrementMode
	11	EXTERN SetYAutoIncrementMode
10	12
11	13	keyscnlnk:
…	…
93	95	DB 87h
94	96	DW remoteControlPacket
	97	DB 6Dh
	98	DW screenshotPacket
95	99	cmdTableEnd:
	100
	101	screenshotPacket:
	102	call SendScreenshotResponse
	103	jr keyscnlnkEnd
	104	SendScreenshotResponse:
	105	call SendAcknowledge
	106	ld de,768
	107	ld (header+2),de
	108	ld hl,1573h
	109	ld (header),hl
	110	call Send4Bytes
	111	di
	112	call SetYAutoIncrementMode
	113	ld a,7Fh
	114	ld b,40h
	115	SendScreenshotResponseLoop:
	116	push bc
	117	inc a
	118	ld (curXRow),a
	119	call SetYAutoIncrementMode
	120	call _LCD_COMMAND
	121	ld a,20h
	122	call _LCD_COMMAND
	123	call LCDDelay
	124	in a,(LCDdataPort)
	125	ld b,12
	126	$$: push bc
	127	call LCDDelay
	128	in a,(LCDdataPort)
	129	ld c,a
	130	call SendCAndAddToChecksum
	131	pop bc
	132	djnz $B
	133	pop bc
	134	ld a,(curXRow)
	135	djnz SendScreenshotResponseLoop
	136	call SetXAutoIncrementMode
	137	ei
	138	SendChecksumAcknowledge:
	139	ld hl,(header+4)
	140	ld a,l
	141	push hl
	142	call SendAByte
	143	pop af
	144	call SendAByte
	145	ReceiveAcknowledgement:
	146	call Get4BytesNC
	147	ld a,(header+1)
	148	cp 56h
	149	ret z
	150	jp JErrorNo
96	151
97	152	remoteControlPacket: