; ; Christian Groessler, 19-Feb-2000 ; ; unsigned char kbhit (void); ; .export _kbhit .import return1 .include "atari.inc" .proc _kbhit ldx CH ; last pressed key inx ; 255 means "no key" bne L1 txa ; X = A = 0 rts L1: jmp return1 .endproc