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23 lines
316 B
ArmAsm
23 lines
316 B
ArmAsm
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; Marco van den Heuvel, 2018-03-20
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;
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; unsigned char isfast (void);
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; /* Returns 1 if the CPU is in double clock mode. */
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;
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.export _isfast
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.include "plus4.inc"
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.proc _isfast
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lda TED_CLK
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lsr
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and #$01
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ldx #$00
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rts
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.endproc
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