[A83] Re: Copying the screen to the graph buffer
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[A83] Re: Copying the screen to the graph buffer
You could try just ldir'ing it, but that wouldn't get the atual hardware:
ld hl,plotsscreen
ld de,grbuf
ld bc,768
ldir
and that would copy it to the graphbuffer. to send it back:
ld hl,grbuf
ld de,plotsscreen
ld bc,768
ldir
call ionFastCopy
If for some reason you don't want touse the graph buffer, then use saferam1
for the storage:
ld hl,plotsscreen
ld de,saferam1
ld bc,768
ldir
since saferam1 is exactly 768 bytes, we can do this easily, however, there is
no room for variables. Instead, use saferam4 for variables.
Hope this helps.
-joel
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