An issue dear to my heart - I have quite a quantity of documentation here to
scan so I did quite a bit of homework and testing on this. It may not exactly
be your issue, but I hope it helps.
For me, the issue was the quality of the documentation - print back in those
days was quite variable of
> If the failure affects the EPROM monitor,then any results you get from the
> monitor are suspect.
No, what I mean is, the appearance of the upper six bits being dead was because
of how the monitor shifts in data from the keypad. Since bit 2 was always zero,
it would look like everything above it
On 5/11/23 21:41, Cameron Kaiser via cctalk wrote:
I thought about this, but the KIM is a pretty simple system. The only memory
mapped device in that range (really, on the entire unit) are the RIOTs, and
their RAM at $1780 is fine and does not echo.
The KIM only does address decoding for 8K and
Thanks for the suggestions, everyone. This board has NEC D2102AL-4 SRAMs on it,
so I ordered a couple MM2102AN-4s which look equivalent. I'll swap one in when
it arrives and see if that's the problem.
--
personal: http://www.cameronkaiser.com/ --
Cameron Kai
> On May 11, 2023, at 10:41 PM, Cameron Kaiser via cctalk
> wrote:
>
>> I thought about this, but the KIM is a pretty simple system. The only memory
>> mapped device in that range (really, on the entire unit) are the RIOTs, and
>> their RAM at $1780 is fine and does not echo.
>>
>> The KIM o
