On Tue, 1 May 2001 17:31:24 -0700 (PDT), you wrote:
>The 2 high/1 low beep means the CPU is running. Plus, even my own custom
>code writes the correct pattern out the bus, so I'm confident the CPU is
>working.
Have you tried changing your diagnostic code to run an AAh/55h or a
walking-bit (00h/01h/02h/04h/08h/10h/20h/40h/80h) pattern? If you've got
data lines shorted together somehow, either by a failure in one of the
buffer chips or by a solder ball, you won't be able to see it with an
00h/FFh test.
-----------------------------------------------------------------------------
"There is no virtue in suffering fools gladly, for it only encourages them to
persist in their foolishness." --Kehlog Albran
-----------------------------------------------------------------------------
solarfox@DON'TMESSWITHtexas.net (Gary Akins jr.)
http://lonestar.texas.net/~solarfox
-----------------------------------------------------------------------------
---------------------------------------------------------------------------
** To UNSUBSCRIBE from vectorlist, send a message with "UNSUBSCRIBE" in the
** message body to vectorlist-request@synthcom.com. Please direct other
** questions, comments, or problems to neil@synthcom.com.
Received on Tue May 1 21:09:42 2001
This archive was generated by hypermail 2.1.8 : Fri Aug 01 2003 - 00:32:17 EDT