2002-11-21 21:22:26 +00:00
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;
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; Ullrich von Bassewitz, 06.08.1998
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;
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2009-11-24 18:31:16 +00:00
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; unsigned char kbhit (void);
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2002-11-21 21:22:26 +00:00
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;
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2013-05-09 11:56:54 +00:00
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.export _kbhit
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2002-11-21 21:22:26 +00:00
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2013-05-09 11:56:54 +00:00
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.include "plus4.inc"
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2002-11-21 21:22:26 +00:00
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2009-11-24 18:31:16 +00:00
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.proc _kbhit
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ldx #0 ; High byte of return is always zero
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2013-05-09 11:56:54 +00:00
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lda KEY_COUNT ; Get number of characters
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ora FKEY_COUNT ; Or with number of chars from function keys
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2009-11-24 18:31:16 +00:00
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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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2002-11-21 21:22:26 +00:00
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