26 Apr
2016
26 Apr
'16
3:18 p.m.
I can now do test code for the NVRAM, I will start
with repeated reads to
see if
I get different values on different occasions. Then I
will save it and
write
patterns etc. It may be a checksum that is failing of
course. Or the DROM
itself,
which I can't verify until I get the PLCC adapter
for my PROM programmer
and
someone else to read their DROM.
What size PLCC? I have some PLCC to DIL adaptors...
Thanks for all the help I have a way forward for a little while now.
Although anyone with one of these machines who could read the DROM would
be helpful. I will be able to supply a VMS program to read it, so need to
remove
it from the machine or to have a programmer.
Regards
Rob
Dave
G4UGM