> -----Original Message----- > From: cctalk [mailto:cctalk-boun...@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@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