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cc65/libsrc/apple2/kbhit.s
cuz a57deeb58a Reworked version by Oliver Schmidt
git-svn-id: svn://svn.cc65.org/cc65/trunk@2913 b7a2c559-68d2-44c3-8de9-860c34a00d81
2004-03-11 21:54:22 +00:00

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ArmAsm

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