39 lines
529 B
ArmAsm
39 lines
529 B
ArmAsm
;=========================================================
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; hgr copy from $2000 to $4000
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;=========================================================
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; copy $2000 to $4000
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; intentionally slow for the miniblind effect
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hgr_copy:
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ldy #0 ; start at beginning
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sty INL
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sty OUTL
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lda #$20
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sta INH
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lda #$40
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sta OUTH
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; ldy #0
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hgr_copy_outer:
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hgr_copy_inner:
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lda #1 ; artificial slowdown
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jsr wait
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lda (INL),Y
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sta (OUTL),Y
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iny
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bne hgr_copy_inner
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inc INH
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inc OUTH
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lda OUTH
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cmp #$60
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bne hgr_copy_outer
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rts
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