Screen editor ported to C64

[adric22]

I ported my screen editor over to the C64, which is cool because now you can edit in 80x50 pixels. Anyway, one problem I can't seem to work out is that the load/save routines don't work anymore. I didn't change anything except the length of the file to be saved (since the screen is now larger). Saving doesn't seem to save anything and loading causes the system to reset to a READY prompt.. I haven't been able to figure out why. Otherwise, everything else is working. Here are the load/save routines if anyone has any input:

Code: Select all

FILENAME	!pet "image"
SETLFS = $FFBA
SETNAM = $FFBD
LOAD = $FFD5
SAVE = $FFD8

LOADFILE 	; Uses kernel routine to load temporary screen area from disk.
	LDA	#$01
	LDX	#$08		; Device 8
	LDY	#$01
	JSR	SETLFS
	LDA	#$05
	LDX	#<FILENAME
	LDY	#>FILENAME
	JSR	SETNAM
	LDA	#$0
	JSR	LOAD
	JSR	LOADSCN	; Copy temporary area to screen memory.
	RTS

SAVEFILE	; Uses kernel routine to save temporary screen area to disk.
	JSR	PUTOLD 	; Gets the cursor off out of the image before saving.
	JSR	COPYSCN	; Copy screen to temporary area.	
	LDA	#$01
	LDX	#$08		; Device 8
	LDY	#$00
	JSR	SETLFS
	LDA	#$05
	LDX	#<FILENAME
	LDY	#>FILENAME
	JSR	SETNAM
	LDA	#<SCRTEM	; Temporary area.
	STA	$C1
	LDA	#>SCRTEM	; Temporary area.
	STA	$C2
	LDA	#$C1
	LDX	#<SCRTEM+$05DC ;end of Temporary area.
	LDY	#>SCRTEM+$05DC ;end of Temporary area.
	JSR	SAVE
	RTS

[Boray]

Why was this topic locked? Because it's not about the vic-20?

[Bacon]

Locking it seems overkill but it should probably be moved to Other Systems.

[orion70]

Done .

[carlsson]

I think it got locked in the first place because there already was an ongoing thread about the VIC version and it seemed unneccesary to start a new thread - on Denial no less - just to announce a C64 version.