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direct memory access and sprite fixes

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This commit is contained in:
Irmen de Jong 2018-12-31 04:53:50 +01:00
parent a319e6f9ec
commit 7b41a4b5fa
1 changed files with 4 additions and 4 deletions
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8
compiler/examples/sprites.p8
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@ -64,20 +64,20 @@
~ irq {
; @todo no longer auto-set this as irq handler. instead, add builtins functions activate_irqvec() / restore_irqvec()
sub irq() {
;return ; @todo return statements in the irqhandler should not do rts, but instead jmp c64.IRQDFRT
;return ; @todo return statements in the irqhandler should not do rts, but instead jmp c64.IRQDFRT (RETURNFROMIRQ)
; @todo also when including this return, the jmp c64.IRQDFRT at the end gets omitted.....:(
c64.EXTCOL++
for ubyte i in 0 to 7 {
@(main.SP0Y+i+i)-- ; float up
@(main.SP0Y+i*2)-- ; float up
; horizontal wobble effect
ubyte r = rnd()
if r>208
@(main.SP0X+i+i)++
@(main.SP0X+i*2)++
else {
; @todo if-else if -else syntax without curly braces
if r<48
@(main.SP0X+i+i)--
@(main.SP0X+i*2)--
}
}
c64.EXTCOL--