10 Feb
2017
10 Feb
'17
3:11 a.m.
I know it's a "newer" PC compatible machine, but I was wondering if
anyone had a 20MB PC110 Palmtop and could tell me (or send me pics) of
the 16MB RAM upgrade. I have a non working unit here I can liberate the
4MB module from, and I believe I can replace the RAM ICs with larger ones.
The DRAMs on the board are HM51W16160ATT7, which are 70nS FP DRAM
1Mbx16 I assume there are similar 4Mbx16 DRAMs I could solder in
(A0-A11 Row/Col)
Jim
--
Jim Brain
brain at jbrain.com
www.jbrain.com
10 Feb
10 Feb
12:37 p.m.
On 10 February 2017 at 09:11, Jim Brain <brain at jbrain.com> wrote:
I know it's a "newer" PC compatible
machine, but I was wondering if anyone
had a 20MB PC110 Palmtop
That's very cute. :?) I am surprised but AFAIK I've never heard of them before.
--
Liam Proven ? Profile: https://about.me/liamproven
Email: lproven at cix.co.uk ? Google Mail/Talk/Plus: lproven at gmail.com
Twitter/Facebook/Flickr: lproven ? Skype/LinkedIn/AIM/Yahoo: liamproven
UK: +44 7939-087884 ? ?R/WhatsApp/Telegram/Signal: +420 702 829 053
11 Feb
11 Feb
12:53 p.m.
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,
Santo
On Fri, Feb 10, 2017 at 12:37 PM, Liam Proven <lproven at gmail.com> wrote:
On 10 February 2017 at 09:11, Jim Brain <brain at
jbrain.com> wrote:
I know it's a "newer" PC compatible
machine, but I was wondering if
anyone
had a 20MB PC110 Palmtop
That's very cute. :?) I am surprised but AFAIK I've never heard of them
before.
--
Liam Proven ? Profile: https://about.me/liamproven
Email: lproven at cix.co.uk ? Google Mail/Talk/Plus: lproven at gmail.com
Twitter/Facebook/Flickr: lproven ? Skype/LinkedIn/AIM/Yahoo: liamproven
UK: +44 7939-087884 ? ?R/WhatsApp/Telegram/Signal: +420 702 829 053
1:06 p.m.
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,
Santo
On Fri, Feb 10, 2017 at 12:37 PM, Liam Proven <lproven at gmail.com> wrote:
> On 10 February 2017 at 09:11, Jim Brain <brain at jbrain.com> wrote:
>> I know it's a "newer" PC compatible machine, but I was wondering
if
> anyone
>> had a 20MB PC110 Palmtop
>
> That's very cute. :?) I am surprised but AFAIK I've never heard of them
> before.
>
> --
> Liam Proven ? Profile: https://about.me/liamproven
> Email: lproven at cix.co.uk ? Google Mail/Talk/Plus: lproven at gmail.com
> Twitter/Facebook/Flickr: lproven ? Skype/LinkedIn/AIM/Yahoo: liamproven
> UK: +44 7939-087884 ? ?R/WhatsApp/Telegram/Signal: +420 702 829 053
>
3:48 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
4:27 p.m.
On 2/11/2017 11:53 AM, 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.
For your
records:
http://www.datasheetlib.com/datasheet/160793/51w17800_hitachi-semiconductor…
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brain＠jbrain.com -
lproven＠gmail.com -
phb.hfx＠gmail.com -
santo.nucifora＠gmail.com