On 2023-10-08 10:34, Rob Jarratt via cctalk wrote:
Perhaps it isn't the 2114 or its associated circuit at all. Maybe some other
device is being incorrectly selected by that address and driving (half) the bus
low? Just a thought.
Many thanks for the suggestion. This hadn't crossed my mind,
...@jarratt.me.uk; General Discussion: On-Topic and Off-Topic Posts
Subject: Re: [cctalk] Re: VT100: Failing 2114 Chip Replaced With One With The
Same Fault
Another possible approach is to trigger the logic analyser on a write access to
that ram address, preferably with the probes on the ram
gt;> > From: wrco...@wrcooke.net
>> > Sent: 08 October 2023 04:15
>> > To: r...@jarratt.me.uk; Rob Jarratt via cctalk
>> > Subject: Re: [cctalk] VT100: Failing 2114 Chip Replaced With One With
>> The
>> > Same Fault
>> >
>> >
...@jarratt.me.uk; Rob Jarratt via cctalk
> > Subject: Re: [cctalk] VT100: Failing 2114 Chip Replaced With One With The
> > Same Fault
> >
> >
> >
> > > On 10/07/2023 5:35 PM CDT Rob Jarratt via cctalk <
> cctalk@classiccmp.org>
> > wrote:
> -Original Message-
> From: wrco...@wrcooke.net
> Sent: 08 October 2023 04:15
> To: r...@jarratt.me.uk; Rob Jarratt via cctalk
> Subject: Re: [cctalk] VT100: Failing 2114 Chip Replaced With One With The
> Same Fault
>
>
>
> > On 10/07/2023 5
