Memory chips
5 messages · 2006-02-28 → 2006-02-28 · Yahoo Group era · View archive on archive.org
Participants: Senen Racki, Φοίβος Ρ. Ντόκος
Preserved from the Timex/Sinclair 2068 Yahoo Group (2001–2019), which is no longer online. Text reproduced from the archive.org archive; email addresses masked.
Messages
1. Memory chips
Senen Racki · Tue, 28 Feb 2006 07:04
Hey guys,
I'm dismantled and discarding a bunch of old PCs at work and came across a memory
expansion board for an XT/AT. It's an ISA add-in that is populated with a lot of socketed
memory chips. I wonder if anyone can make use of these for their Timex/Sinclair projects.
Here are the part numbers of the various chips on the board:
KM41256-12 (Korea)
HYB 41256-12 (Siemens)
TMM41256AP-12 (Japan)
TMS4256-12NL (Texas Instruments)
I think the board is called an Intel Above-Board. There are 126 chips in total. Judging
by the part numbers, they appear to be the same capacity and speed from various
manufacturers. I've posted a spec sheet here:
http://www.racki.ca/files/TMS4256.pdf
If anyone is interested in this for the cost of mailing let me know.
Senen.
2. Re: [ts2068] Memory chips
Φοίβος Ρ. Ντόκος · Tue, 28 Feb 2006 08:40
Την Tue, 28 Feb 2006 07:04:07 -0500,ο(η) Senen Racki <[email]>
έγραψε:
> Hey guys,
>
>
> I'm dismantled and discarding a bunch of old PCs at work and came across
> a memory
> expansion board for an XT/AT. It's an ISA add-in that is populated with
> a lot of socketed
> memory chips. I wonder if anyone can make use of these for their
> Timex/Sinclair projects.
> Here are the part numbers of the various chips on the board:
>
>
> KM41256-12 (Korea)
>
> HYB 41256-12 (Siemens)
>
> TMM41256AP-12 (Japan)
>
> TMS4256-12NL (Texas Instruments)
>
These are all 41256 chips. They can be used on a QL (16 of these will make
a QL 512Kb internally) or on a Spectrum / T/S they will just replace the
4116 chips (IIRC they have the same pinout but are not decoded) so only
48K will be available
>
> I think the board is called an Intel Above-Board. There are 126 chips
> in total. Judging
> by the part numbers, they appear to be the same capacity and speed from
> various
> manufacturers. I've posted a spec sheet here:
>
>
THis is an EMS memory board complying probably to LIM/EMS spec. v.3 or 4
I'd sell the whole thing on eBay if I were you :-)
> http://www.racki.ca/files/TMS4256.pdf
>
>
> If anyone is interested in this for the cost of mailing let me know.
>
>
> Senen.
>
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3. RE: [ts2068] Memory chips
Senen Racki · Tue, 28 Feb 2006 09:21
>THis is an EMS memory board complying probably to LIM/EMS spec. v.3 or 4
>I'd sell the whole thing on eBay if I were you :-)
Yes, that's exactly what it is. I'd love to post it on eBay but I can't. I can discard
it by throwing it in the dumpster, but I cannot profit from the sale of it.
My employer has strict rules about that sort of thing.
So the offer still stands. I just unsubscribed from the QL-Users group last week. If
anyone is on that list and would like to forward the original message, feel free to do so.
I'd hate to see this stuff thrown away.
Senen.
4. Re: [ts2068] Memory chips
Φοίβος Ρ. Ντόκος · Tue, 28 Feb 2006 09:27
Την Tue, 28 Feb 2006 07:04:07 -0500,ο(η) Senen Racki <[email]>
έγραψε:
> Hey guys,
>
>
> I'm dismantled and discarding a bunch of old PCs at work and came across
> a memory
> expansion board for an XT/AT. It's an ISA add-in that is populated with
> a lot of socketed
> memory chips. I wonder if anyone can make use of these for their
> Timex/Sinclair projects.
> Here are the part numbers of the various chips on the board:
>
>
> KM41256-12 (Korea)
>
> HYB 41256-12 (Siemens)
>
> TMM41256AP-12 (Japan)
>
> TMS4256-12NL (Texas Instruments)
>
>
> I think the board is called an Intel Above-Board. There are 126 chips
> in total. Judging
> by the part numbers, they appear to be the same capacity and speed from
> various
> manufacturers. I've posted a spec sheet here:
>
>
> http://www.racki.ca/files/TMS4256.pdf
>
>
> If anyone is interested in this for the cost of mailing let me know.
I am (just for the chips that is), how much?
Phoebus
5. RE: [ts2068] Memory chips
Senen Racki · Tue, 28 Feb 2006 09:42
Ok, they're yours!
Send your mailing address to me directly - [email] . I don't want anything for the
chips, but I'd like to get reimbursed mailing costs.
I'll leave the chips on the daughterboard because they are safer that way, and I'll
include about 80 other chips (mostly the same kind/family). That ought to last you a
while...
Senen.