23 Jul
2005
23 Jul
'05
3:57 a.m.
All:
I have a CompuPro/Godbout RAM14 (16kx8) board, arranged in 4 banks
of 4k starting at 0. I ran a memory test program on it and it shows address
0x3000 as failing; when you look at data written, it appears that BIT 0 is
bad.
So, I ordered some 2147 chips from JDR and swapped the bad chip. It
still fails the same bit. So, I swapped it with another chip in the row, and
it fails again. It passes at address 1000 and 2000, so it can't be an
address bit buffer chip.
Any ideas? Where should I look next?
Thanks.
Rich
Rich Cini
Collector of classic computers
Build Master for the Altair32 Emulation Project
Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/
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