On Sun, Jul 24, 2016 at 5:01 AM, Mattis Lind <mattisl...@gmail.com> wrote:
> After successfully repairing the G231 module of the MM11-L set I continued > with the next one. This one was not able to access addresses ending 0100 > (binary). Luckily it was not the transistors arrays that were bad but the > selector chip. A Signetics N8251 chip. > I suspect that since you've debugged it already, this won't help. Just in case, the datasheet is on page 52 of: https://archive.org/details/bitsavers_signeticsdcs8000SeriesTTLMSI_11847693 /Mattis > b