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cc65/libsrc/geos/conio/kbhit.s
uz bfbf94404b Squeezed bytes and cycles out of the kbhit functions for almost all platforms.
git-svn-id: svn://svn.cc65.org/cc65/trunk@4480 b7a2c559-68d2-44c3-8de9-860c34a00d81
2009-11-24 18:31:16 +00:00

23 lines
366 B
ArmAsm

;
; Maciej 'YTM/Elysium' Witkowiak
;
; 27.10.2001
; unsigned char kbhit (void);
.export _kbhit
.include "../inc/geossym.inc"
.proc _kbhit
ldx #0 ; High byte of result
lda pressFlag
rol ; Bit 7 is new key flag
txa ; A = 0
rol
rts
.endproc