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Fixed a problem with clock() (Greg King)

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git-svn-id: svn://svn.cc65.org/cc65/trunk@2147 b7a2c559-68d2-44c3-8de9-860c34a00d81
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cuz 2003-05-05 08:20:07 +00:00
parent 1cdb90926a
commit cd4a9e3fb0
1 changed files with 8 additions and 1 deletions
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9
libsrc/nes/clock.s
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@ -1,6 +1,11 @@
; ;
; clock.s
;
; Written by Groepaz/Hitmen <groepaz@gmx.net> ; Written by Groepaz/Hitmen <groepaz@gmx.net>
; Cleanup by Ullrich von Bassewitz <uz@cc65.org> ; Cleanup by Ullrich von Bassewitz <uz@cc65.org>
; 2003-05-02, Greg King <gngking@erols.com>
;
; #include <time.h>
; ;
; clock_t clock (void); ; clock_t clock (void);
; ;
@ -16,8 +21,10 @@
ldy #0 ; High word is always zero ldy #0 ; High word is always zero
sty sreg+1 sty sreg+1
sty sreg sty sreg
ldx tickcount+1 ; ## Problem: Cannot disable ints here L1: ldx tickcount+1
lda tickcount lda tickcount
cpx tickcount+1 ; Did tickcount change?
bne L1 ; Yes, re-read it
rts rts
.endproc .endproc