5 Dec
2016
5 Dec
'16
7:57 p.m.
On Mon, Dec 5, 2016 at 11:20 AM, Craig Ruff <cruff at ruffspot.net> wrote:
Also, since I have it apart, I thought it might be
good to image the
firmware ROM set. They are marked Mostek MK36647N-5 and MK36648N-5, along
with the HP part numbers. From the schematic, they appear to be 5V 8KB
ROMs, so nothing fancy should be required to read the contents. It appears
these might be MK36000N-5 mask programmed ROMs?
Yes. And same for the 9872T.
The 9872A uses HP ROMs that aren't compatible with anything else. I'm not
sure about the 9872B and 9872S.