11 Nov
2018
11 Nov
'18
1:32 p.m.
-----Original Message-----
From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Brent
Hilpert via cctalk
Sent: 11 November 2018 20:07
To: General Discussion: On-Topic and Off-Topic Posts
<cctalk at classiccmp.org>
Subject: Re: Another IC I Can't Identify
On 2018-Nov-11, at 11:52 AM, Rob Jarratt via cctalk wrote:
> Thanks for all the replies. If that is indeed what it is, then I still
have
not
been able to find the source of one of the signals
that seems to be
causing
the Reset, every pin I have found so far is an input,
I have not found it
connected to the output of anything yet :-(
Have you tried the reverse? : follow an origin that you know should be
controlling reset, such as the power-on indication from the PS, and see if
you
can trace it to the CPU.=
I have already found that source and it all looks OK. I think I have
identified another input to a NOR gate that is high and causing the reset,
but I can't find where it comes from.
Regards
Rob