[sdiy] The fatman is finished...

The Old Crow oldcrow at oldcrows.net
Sat Apr 24 23:54:50 CEST 2004


  It sounds like the 8031 is not running.  Check to see if there is a
processor clock at IC1 pin 18 (or 19, whichever is the internal osc
output)...or check for the ALE strobe pulses at pin 30.  Are C2 and C3 the
listed 33pF values?  Check for solder bridges, cracked traces, etc. in the 
IC1/IC2/IC3 === MCU/latch/ROM connections.  Check IC4 connections as well.

Crow
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