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25 lines
336 B
ArmAsm
25 lines
336 B
ArmAsm
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; Ullrich von Bassewitz, 06.08.1998
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; unsigned char kbhit (void);
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;
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.export _kbhit
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.import keyidx: zp
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.proc _kbhit
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ldx #0 ; High byte of return is always zero
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lda keyidx ; Get number of characters
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beq L9
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lda #1
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L9: rts
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.endproc
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