11 Feb
2017
11 Feb
'17
12:48 p.m.
On 2/11/2017 12:06 PM, Paul Berger wrote:
You might want to try just searching for 17800B that
will get you data
sheets for 2 MB RAM chips from other manufacturers, so I would suspect
what you have there is a 16MB RAM module..
Paul
On 2017-02-11 1:53 PM, Santo Nucifora wrote:
> Hi Jim,
>
> Follow this link for pics of my IBM PC110 memory module. The memory
> chips
> are marked Hitachi 51W17800BTT7 but I can't seem to find a data sheet.
> Unfortunately, it doesn't boot at the moment. I'll charge it up and
> see if
> she'll boot.
>
> http://vintagecomputer.ca/ibm-pc-110-memory-module/
>
> It is a very cool unit. Hope this helps,
It does, and it both helps and
hinders.
The part number is a 2Mb x 8 FP DRAM, and 8 of them make up the 16MB of
DRAM.
That part is great news (mainly for you, but it's nice to have a pic)
The bad news is that I had hoped I could simply replace the ICs on my
unit with 4Mb x 16 FP DRAMs, assuming that's how they did the 16MB unit,
but it does not appear that way.
I guess I could replicate the PCB, and try to find 8 of those DRAMs....
At least I have the connector
Are you interested in selling the unit? Do you want someone to test it?
Does anyone else know of a 4Mb x 16 variety that is FP DRAM?
Jim