Thanks! RE:XT Diagnostic ROM and POSTcard

Jim Leonard trixter at
Sat May 31 09:44:56 CDT 2008

Andrew Lynch wrote:
> Long story short, I replaced a 74LS245 and a faulty DRAM chip and now the
> board boots fine.  

The DRAM I could probably figure out myself, but how did you determine 
the 74LS245 was at fault?  (I, too, have a 5150 that won't boot)
Jim Leonard (trixter at  
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