;from Paul W. Webster mov W, file and W, #fmask ; fmask for bit 0 is defined as 0x01 or W, shadA ; add in desired outputs from shadow mov RA, W
Only changes port A on the last cycle. Note that you must call this routine (subroutine/ macro) *whenever* you write to an output bit, which you always do using a SETB or CLRB on shadA, never RA.
;from Paul W. Webster mov W, file xor W, RA ; derive "difference" value. and W, #fmask ; fmask for bit 0 is defined as 0x01 xor RA, W ; Flip bit if not same.
|file: /Techref/scenix/lib/math/bit/cbrpwoj_sx.htm, 1KB, , updated: 2004/6/10 13:40, local time: 2022/11/27 23:49,
|©2022 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions?|
<A HREF="http://www.sxlist.com/techref/scenix/lib/math/bit/cbrpwoj_sx.htm"> SX Microcontroller Bit Math Method Transfer one bit from a file register to one pin of PORT w/o jitter</A>
|Did you find what you needed?|
Welcome to sxlist.com!
& kind contributors
just like you!
Please don't rip/copy
Copies of the site on CD
are available at minimal cost.
Welcome to www.sxlist.com!