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Move store out of region with interrupts disabled to improve interrupt

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latency.


git-svn-id: svn://svn.cc65.org/cc65/trunk@236 b7a2c559-68d2-44c3-8de9-860c34a00d81
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cuz 2000-07-30 09:30:58 +00:00
parent dcb557517e
commit 2e3b545bdb
1 changed files with 3 additions and 3 deletions
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6
libsrc/atari/clock.s
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@ -19,11 +19,11 @@
sta sreg+1 sta sreg+1
php ; Save current I flag value php ; Save current I flag value
sei ; Disable interrupts sei ; Disable interrupts
lda RTCLOK+2
sta sreg
lda RTCLOK ; Read clock lda RTCLOK ; Read clock
ldx RTCLOK+1 ldx RTCLOK+1
plp ; Restore old I bit ldy RTCLOK+2
plp ; Restore old I bit
sty sreg
rts rts
.endproc .endproc