Code: ld d, 0
call fillScreen
ret
fillScreen:
ld hl, vRam
ld bc, 76800
fillScreenLoop:
ld (hl), d
inc hl
dec bc
jp nz, fillScreenLoop
ret
I have this code here, and for some reason it's not working. Are there any problems here? (If it helps, vRam is equal to $0D40000)
Also, when I remove the JP NZ opcode and let it run, the screen filling is very slow compared to other TI-84 PCE games I have seen. Would any optimizations on this be possible? Thanks for all the help.
You should look into the
ldir instruction.
Code: ld hl, vRam
ld (hl), $00
ld de, vRam+1
ld bc, (2*lcdWidth*lcdHeight)-1
ldir
ret
You should look into the code for the graphx fillscreen function.
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