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29 lines
577 B
ArmAsm
29 lines
577 B
ArmAsm
;
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; Jede, 2021-03-10
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;
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; clock_t clock (void);
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;
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.export _clock
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.importzp sreg
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.include "telestrat.inc"
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.proc _clock
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; Clear the timer high 16 bits
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ldy #$00
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sty sreg
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sty sreg+1
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; Read the timer
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sei ; Disable interrupts
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lda TIMEUD ; TIMED contains 1/10 of a second from clock. Telestrat main cardridge simulate a clock from VIA6522 timer
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ldx TIMEUD+1
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cli ; Reenable interrupts
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rts
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.endproc
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