Obviously setting, or clearing a bit is done with bsf and bcf. Toggleing a bit is done with XOR and a mask. But what if you don't know which bit to set, clear or toggle before the program is compiled?
Two bits will be "ORed" together to find set/reset a third bit. The result is expected to be false and when either bit is set, the result is true:bcf Result ; Assume the result is False btfss BitA ; If BitA != 0 then result is True btfsc BitB ; If BitB == 0 then result is False bsf Result ; Result is True, Set the Bit
|file: /Techref/microchip/math/bit/orbits.htm, 1KB, , updated: 2004/12/6 13:00, local time: 2018/3/24 22:37,
|©2018 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.piclist.com/techref/microchip/math/bit/orbits.htm"> PIC Microcontoller Bit Math Method </A>
|Did you find what you needed?|
PICList 2018 contributors:
o List host: MIT, Site host massmind.org, Top posters @20180324 RussellMc, Isaac M. Bavaresco, Sean Breheny, Van Horn, David, Neil, alan.b.pearce, Bob Blick, David C Brown, John Gardner, Brent Brown,
* Page Editors: James Newton, David Cary, and YOU!
* Roman Black of Black Robotics donates from sales of Linistep stepper controller kits.
* Ashley Roll of Digital Nemesis donates from sales of RCL-1 RS232 to TTL converters.
* Monthly Subscribers: Gregg Rew. on-going support is MOST appreciated!
* Contributors: Richard Seriani, Sr.
Welcome to www.piclist.com!