31 Jan
2002
31 Jan
'02
8:15 p.m.
i have a a chip 82s100 it is programmed, i have it
using it with 8o86 processor, i dont have the truth
table of that prorammed chip,now i want to read its
table or copy the same chip ,what is the procedure for it
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1 Feb
1 Feb
1:24 p.m.
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24 Feb
24 Feb
3:31 a.m.
New subject: Looking for TMS4044-450
Hello Group,
I am currently restoring an SWTPc/09 for wich I will need some
TMS4044 ( 4k x 1 sram ). They seem to be are unobtainable here and I would
rather not hack to PCB to accept some other SRAM size .
Anybody has some spare that they are willing to let go ?
I'm looking for 4 to 5 devices.
Location : Zurich, Switzerland
Jos Dreesen
2:54 a.m.
New subject: Looking for TMS4044-450
I haven't looked lately, but I likely have a few of these. It might be useful
to you, however, as you are quite far away, to know that these devices are
pin-compatible with 2141's and 2147's, which may be more widely available.
The 2147's were faster parts, but very widely used, while the TMS 4044 was
strictly a T.I. number for the 2141/2147. One thing that makes them differ
from the 2114 type, aside from the word-width, is that
they have separate D
and Q pins.
Dick
----- Original Message -----
From: "Jos Dreesen" <jos.mar(a)bluewin.ch>
To: <classiccmp(a)classiccmp.org>
Sent: Sunday, February 24, 2002 7:31 AM
Subject: Looking for TMS4044-450
Hello Group,
I am currently restoring an SWTPc/09 for wich I will need some
TMS4044 ( 4k x 1 sram ). They seem to be are unobtainable here and I would
rather not hack to PCB to accept some other SRAM size .
Anybody has some spare that they are willing to let go ?
I'm looking for 4 to 5 devices.
Location : Zurich, Switzerland
Jos Dreesen
3:22 a.m.
New subject: Looking for TMS4044-450
A quick Google search turned up this:
http://www.rocktechnology.com/LittleRAM.html $0.25 ea! I realize you're in
Switzerland, but at least they're available as unused parts.
-- John
-----Original Message-----
From: owner-classiccmp(a)classiccmp.org
[mailto:owner-classiccmp@classiccmp.org]On Behalf Of Jos Dreesen
Sent: Sunday, February 24, 2002 9:32 AM
To: classiccmp(a)classiccmp.org
Subject: Looking for TMS4044-450
Hello Group,
I am currently restoring an SWTPc/09 for wich I will need some
TMS4044 ( 4k x 1 sram ). They seem to be are unobtainable here and I would
rather not hack to PCB to accept some other SRAM size .
Anybody has some spare that they are willing to let go ?
I'm looking for 4 to 5 devices.
Location : Zurich, Switzerland
Jos Dreesen
5:03 a.m.
New subject: Looking for TMS4044-450
Is that the same as 2147 ?
Is it static or dynamic RAM ?
Sipke de Wal
-----------------------------------
http://xgistor.ath.cx
-----------------------------------
----- Original Message -----
From: Jos Dreesen <jos.mar(a)bluewin.ch>
To: <classiccmp(a)classiccmp.org>
Sent: Sunday, February 24, 2002 3:31 PM
Subject: Looking for TMS4044-450
Hello Group,
I am currently restoring an SWTPc/09 for wich I will need some
TMS4044 ( 4k x 1 sram ). They seem to be are unobtainable here and I would
rather not hack to PCB to accept some other SRAM size .
Anybody has some spare that they are willing to let go ?
I'm looking for 4 to 5 devices.
Location : Zurich, Switzerland
Jos Dreesen
11:41 a.m.
New subject: Looking for TMS4044-450
Yes, it's essentially a slow, cheap, not so hot, and therefore plastic, 2147.
It's an SRAM, 4Kx1 with separate I/O and in an 18-pin package.
Dick
----- Original Message -----
From: "Sipke de Wal" <sipke(a)wxs.nl>
To: <classiccmp(a)classiccmp.org>
Sent: Sunday, February 24, 2002 9:03 AM
Subject: Re: Looking for TMS4044-450
Is that the same as 2147 ?
Is it static or dynamic RAM ?
Sipke de Wal
-----------------------------------
http://xgistor.ath.cx
-----------------------------------
----- Original Message -----
From: Jos Dreesen <jos.mar(a)bluewin.ch>
To: <classiccmp(a)classiccmp.org>
Sent: Sunday, February 24, 2002 3:31 PM
Subject: Looking for TMS4044-450
Hello Group,
I am currently restoring an SWTPc/09 for wich I will need some
TMS4044 ( 4k x 1 sram ). They seem to be are unobtainable here and I would
rather not hack to PCB to accept some other SRAM size .
Anybody has some spare that they are willing to let go ?
I'm looking for 4 to 5 devices.
Location : Zurich, Switzerland
Jos Dreesen
noon
New subject: Looking for TMS4044-450
In that case I may have 8 or 10 pcs of them
allthoug there ceramic IRC.
Contact me off list ............
Sipke de Wal
-----------------------------------------
http://xgistor.ath.cx
-----------------------------------------
----- Original Message -----
From: Richard Erlacher <edick(a)idcomm.com>
To: <classiccmp(a)classiccmp.org>
Sent: Sunday, February 24, 2002 11:41 PM
Subject: Re: Looking for TMS4044-450
Yes, it's essentially a slow, cheap, not so hot,
and therefore plastic, 2147.
It's an SRAM, 4Kx1 with separate I/O and in an 18-pin package.
Dick
----- Original Message -----
From: "Sipke de Wal" <sipke(a)wxs.nl>
To: <classiccmp(a)classiccmp.org>
Sent: Sunday, February 24, 2002 9:03 AM
Subject: Re: Looking for TMS4044-450
Is that the same as 2147 ?
Is it static or dynamic RAM ?
Sipke de Wal
-----------------------------------
http://xgistor.ath.cx
-----------------------------------
----- Original Message -----
From: Jos Dreesen <jos.mar(a)bluewin.ch>
To: <classiccmp(a)classiccmp.org>
Sent: Sunday, February 24, 2002 3:31 PM
Subject: Looking for TMS4044-450
Hello Group,
I am currently restoring an SWTPc/09 for wich I will need some
TMS4044 ( 4k x 1 sram ). They seem to be are unobtainable here and I would
rather not hack to PCB to accept some other SRAM size .
Anybody has some spare that they are willing to let go ?
I'm looking for 4 to 5 devices.
Location : Zurich, Switzerland
Jos Dreesen
7:24 p.m.
New subject: Looking for TMS4044-450
If there's business that sells 'em, it's probably better and easier to have
them ship the things than for a private party to do it, even if they're free.
ISTR someone found 'em for $0.25 each.
Dick
----- Original Message -----
From: "Sipke de Wal" <sipke(a)wxs.nl>
To: <classiccmp(a)classiccmp.org>
Sent: Sunday, February 24, 2002 4:00 PM
Subject: Re: Looking for TMS4044-450
In that case I may have 8 or 10 pcs of them
allthoug there ceramic IRC.
Contact me off list ............
Sipke de Wal
-----------------------------------------
http://xgistor.ath.cx
-----------------------------------------
----- Original Message -----
From: Richard Erlacher <edick(a)idcomm.com>
To: <classiccmp(a)classiccmp.org>
Sent: Sunday, February 24, 2002 11:41 PM
Subject: Re: Looking for TMS4044-450
> Yes, it's essentially a slow, cheap, not so hot, and therefore plastic,
2147.
> It's an SRAM, 4Kx1 with separate I/O and in
an 18-pin package.
>
> Dick
>
> ----- Original Message -----
> From: "Sipke de Wal" <sipke(a)wxs.nl>
> To: <classiccmp(a)classiccmp.org>
> Sent: Sunday, February 24, 2002 9:03 AM
> Subject: Re: Looking for TMS4044-450
>
>
> > Is that the same as 2147 ?
> >
> > Is it static or dynamic RAM ?
> >
> > Sipke de Wal
> > -----------------------------------
> > http://xgistor.ath.cx
> > -----------------------------------
> >
> > ----- Original Message -----
> > From: Jos Dreesen <jos.mar(a)bluewin.ch>
> > To: <classiccmp(a)classiccmp.org>
> > Sent: Sunday, February 24, 2002 3:31 PM
> > Subject: Looking for TMS4044-450
> >
> >
> > >
> > > Hello Group,
> > >
> > > I am currently restoring an SWTPc/09 for wich I will need some
> > > TMS4044 ( 4k x 1 sram ). They seem to be are unobtainable here and I
would
rather not
hack to PCB to accept some other SRAM size .
Anybody has some spare that they are willing to let go ?
I'm looking for 4 to 5 devices.
Location : Zurich, Switzerland
Jos Dreesen
25 Feb
25 Feb
8:08 a.m.
New subject: Looking for TMS4044-450
Richard Erlacher wrote:
If there's business that sells 'em, it's probably better and easier to have
them ship the things than for a private party to do it, even if they're free.
ISTR someone found 'em for $0.25 each.
Dick
Yes, if you take all 25000 of them....
I was trying to restore MY SWTPc, not ALL SWTPc's ever made.
And a 10 USD order across the Atlantic is unlikely to be of interest to that
company.
A quick local swap just seems easier to me.
Nevertheless, thanks everybody for their feedback.
Jos Dreesen
7:37 a.m.
New subject: Looking for TMS4044-450
Really! I had no idea it was an all-or-nothing deal.
There's no question that a local swap would be more practical, of course.
However, a look at http://www.rocktechnology.com/LittleRAM.html wouldn't hurt,
since they clearly say you should make them an offer, and I doubt they'll
refuse to sell a small lot. Parts of this class have been out of the
mainstream for so long that nobody is going to want large quantities of them
so small lots are all they're likely to sell. If you can't get a local deal
of some sort, being in Europe, then you're stuck with some sort of
transcontinental shipment, and these guys are probably in a better position ot
arrange that at nominal cost than most of us.
Dick
----- Original Message -----
From: "Jos Dreesen" <jos.mar(a)bluewin.ch>
To: <classiccmp(a)classiccmp.org>
Sent: Monday, February 25, 2002 12:08 PM
Subject: Re: Looking for TMS4044-450
Richard Erlacher wrote:
>
> If there's business that sells 'em, it's probably better and easier to
have
> them ship the things than for a private party to
do it, even if they're
free.
ISTR someone
found 'em for $0.25 each.
Dick
Yes, if you take all 25000 of them....
I was trying to restore MY SWTPc, not ALL SWTPc's ever made.
And a 10 USD order across the Atlantic is unlikely to be of interest to that
company.
A quick local swap just seems easier to me.
Nevertheless, thanks everybody for their feedback.
Jos Dreesen
8160
days inactive
8184
days old
10 comments
6 participants
participants (6)
-
ard＠p850ug1.demon.co.uk -
edick＠idcomm.com -
jcwren＠jcwren.com -
jos.mar＠bluewin.ch -
sipke＠wxs.nl -
zahid_56＠yahoo.com