Email: Password: Remember Me | Create Account (Free)

Back to Subject List

Old thread has been locked -- no new posts accepted in this thread
???
03/12/03 23:23
Read: times


 
#41388 - XCH and ports
An ISA question...

If I do a
XCH A, R0
instruction, is the value of R0 read from the output latch, or the input pins? The documentation I have seems to imply the latter, but it's not very clear.

Thanks for any help!

List of 5 messages in thread
TopicAuthorDate
XCH and ports            01/01/70 00:00      
   RE: XCH and ports            01/01/70 00:00      
      RE: XCH and ports            01/01/70 00:00      
         RE: XCH and ports            01/01/70 00:00      
            RE: XCH and ports            01/01/70 00:00      

Back to Subject List