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

Back to Subject List

Old thread has been locked -- no new posts accepted in this thread
Richard Erlacher
09/27/12 11:24
Modified:
  09/27/12 11:25

Read: 766 times
Denver, Co
USA


 
#188473 - If you latch both P0 and P2, there will be stabile A15-A0
Responding to: ???'s previous message
These will persist until the next ALE. It shouldn't be necessary, though. P2 will, presumably, retain the A15-A8 throughout the external memory cycle.

Are you saying you don't use P0 and P2 aside from external memory accesses?

RE


List of 18 messages in thread
TopicAuthorDate
SRAM issues      Harry Leung      09/26/12 04:09      
   Setup and hold times?      Per Westermark      09/26/12 04:21      
      RAM issues      Harry Leung      09/26/12 06:13      
         Or narrow pulses ?      Jim Granville      09/26/12 19:46      
      Address setup time      Harry Leung      10/02/12 20:48      
   did you change the arbitration?      Erik Malund      09/26/12 07:18      
      Ram issues      Harry Leung      09/26/12 07:36      
   P0, P2 for memory only, or ...      Erik Malund      09/26/12 09:04      
      p0 and p2      Harry Leung      09/27/12 03:29      
         If you latch both P0 and P2, there will be stabile A15-A0      Richard Erlacher      09/27/12 11:24      
   Arbitration circuit      Oliver Sedlacek      09/26/12 10:08      
   It's a bit tricky synchronizing an 805x with 68k series      Richard Erlacher      09/26/12 15:51      
   you are using a latch, and not a flipflop, right?      Richard Erlacher      09/26/12 22:54      
      FF or latch      Harry Leung      09/27/12 03:30      
         It's a mistake I've seen a time or two ...       Richard Erlacher      09/27/12 11:19      
            time wasting      Stefan KAnev      09/27/12 13:24      
               no circuit diagram      Harry Leung      09/27/12 20:38      
                  You don't have to do that      Richard Erlacher      10/05/12 13:45      

Back to Subject List