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cc65/libsrc/apple2/kbhit.s
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ArmAsm

;;
;; Kevin Ruland
;;
;; int kbhit (void);
;;
.export _kbhit
.import return0, return1
.include "apple2.inc"
_kbhit:
bit KEY_STROBE ; Reading strobe checks for keypress
bmi L1 ; if KEY_STROBE > 127 key was pressed
jmp return0
L1:
jmp return1