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25 lines
324 B
ArmAsm
25 lines
324 B
ArmAsm
update_timer:
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lda SOUND_STATUS
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and #SOUND_MOCKINGBOARD
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bne timer_mockingboard
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; if no mockingboard, then
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; fake timer count so clocks tick
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lda TIMER_COUNT
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clc
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adc #7
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sta TIMER_COUNT
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timer_mockingboard:
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lda TIMER_COUNT
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cmp #50
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bcc timer_not_yet
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jsr update_time
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lda #$0
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sta TIMER_COUNT
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timer_not_yet:
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rts
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