1 Sep
2012
1 Sep
'12
8:29 p.m.
Every so often, since the beginning of the "interweb," I've wasted a few
hours scouring the vast stores of information for a glimmer of data on the
Motorola SC80951S chip. All I find are the part pimps peddling them for
sums which they'll only disclose if you file a formal RFQ. No datasheets
or even a simple description of the part's function can be found anywhere.
I amuse myself by wondering if I had somehow acquired some super secret
component that played a crucial part in the downfall of the Eastern Bloc.
Eventually reality kicks in and I realize it wouldn't have a Motorola logo
on it if that was the case. So here I am, before what probably amounts to
the most comprehensive brain trust in vintage compute technology, to ask if
any of you folks know what this thing is. Here is a link to a photograph:
http://www.aximel.com/files/SC80951S.jpg
Though I could not focus close enough to get a picture of the wafer, it
appears to have some regions that suggest an EPROM memory array, some
smaller regions that might be SRAM, and various other complicated looking
shapes that may just be a CPU of some sort.
I'm mostly interested in learning what it is. But if you can find me a
data sheet I'll gladly share half a dozen of them with you. :-)
1 Sep
1 Sep
8:41 p.m.
Every so often, since the beginning of the
"interweb," I've wasted a few
hours scouring the vast stores of information for a glimmer of data on the
Motorola SC80951S chip. All I find are the part pimps peddling them for
sums which they'll only disclose if you file a formal RFQ. No datasheets
or even a simple description of the part's function can be found anywhere.
The SC prefix from Motorola means it is a custom or semicustom device,
so the likely datasheets were never released beyond the customer.
--
Will
9:11 p.m.
On 9/1/12 8:29 PM, Amardeep S Chana wrote:
Though I could not focus close enough to get a picture
of the wafer, it
appears to have some regions that suggest an EPROM memory array, some
smaller regions that might be SRAM, and various other complicated looking
shapes that may just be a CPU of some sort.
It is probably some variant of the 68705 microcontroller.
3 Sep
3 Sep
4:51 a.m.
On Sat, 1 Sep 2012, Al Kossow wrote:
It is probably some variant of the 68705
microcontroller.
Just last weak, I found an SC80251P as the keyboard controller on the
keyboard PCB of a Perkin Elmer 550 terminal. Maybe it's similar to the
80951.
Christian
PS:
Does someone have the maintenance manual/schematics of the PE 550?
9:27 a.m.
Amardeep S Chana wrote:
Every so often, since the beginning of the
"interweb," I've wasted a few
hours scouring the vast stores of information for a glimmer of data on the
Motorola SC80951S chip. All I find are the part pimps peddling them for
sums which they'll only disclose if you file a formal RFQ. No datasheets
or even a simple description of the part's function can be found anywhere.
I amuse myself by wondering if I had somehow acquired some super secret
component that played a crucial part in the downfall of the Eastern Bloc.
Eventually reality kicks in and I realize it wouldn't have a Motorola logo
on it if that was the case. So here I am, before what probably amounts to
the most comprehensive brain trust in vintage compute technology, to ask if
any of you folks know what this thing is. Here is a link to a photograph:
http://www.aximel.com/files/SC80951S.jpg
Though I could not focus close enough to get a picture of the wafer, it
appears to have some regions that suggest an EPROM memory array, some
smaller regions that might be SRAM, and various other complicated looking
shapes that may just be a CPU of some sort.
I'm mostly interested in learning what it is. But if you can find me a
data sheet I'll gladly share half a dozen of them with you. :-)
Closest item I've found to that part number is SC80909L which appears to
be a Motorola multifunction device like a transistor array used in
Tektronics equipment. Not the same at all I know, but perhaps of some use.
Try getting a close look through the window - you will be able to tell
if it is a CPU or EPROM by the layout, or if you can get a picture and
post it someone here may be able to tell what you've got.
This could be a 68705P3 (28 pin), you could do some diode checks against
the pinout and compare with an EPROM to see what you get. Data lines,
Address Lines, and Select lines should be similar between EPROMs, but if
it is a 68705P3 then it will read quite differently...
How many of these do you have? Hardly seems worth the bother for one or
two, 100 would be different...
John :-#)#
--
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
www.flippers.com
"Old pinballers never die, they just flip out"
4 Sep
4 Sep
2:09 a.m.
Alternates
?MOT SC80951S
?MOTO SC80951S
?SSI SC80951S
?MOTOROLLA SC80951S
?SES SC80951S
?SCA SC80951S
?TRAN SC80951S
?SOL SC80951S
?MOTORLA SC80951S
?NAE SC80951S
?MOTOROL SC80951S
?MOTORO SC80951S
?SABRITEC SC80951S
?Motorola Semiconductor SC80951S
?VARI SC80951S
?NJS SC80951S
?SSD SC80951S
?SSC SC80951S
?MOTOROLA INC SC80951S
?SML SC80951S
?MOT/ON SEMI SC80951S
?SILEC SC80951S
?MOTOROLA TWO WAY SC80951S
?MTO SC80951S
?SOLID STATE DEVICES SC80951S
Regards
?
Rod Smallwood
?
?
-----Original Message-----
From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org]
On Behalf Of John Robertson
Sent: 03 September 2012 17:27
To: General Discussion: On-Topic Posts Only
Subject: Re: Mystery Motorola Chip SC80951S
Amardeep S Chana wrote:
Every so often, since the beginning of the
"interweb," I've wasted a few
hours scouring the vast stores of information for a glimmer of data on the
Motorola SC80951S chip. All I find are the part pimps peddling them for
sums which they'll only disclose if you file a formal RFQ. No datasheets
or even a simple description of the part's function can be found anywhere.
I amuse myself by wondering if I had somehow acquired some super secret
component that played a crucial part in the downfall of the Eastern Bloc.
Eventually reality kicks in and I realize it wouldn't have a Motorola logo
on it if that was the case. So here I am, before what probably amounts to
the most comprehensive brain trust in vintage compute technology, to ask
if
any of you folks know what this thing is. Here is a
link to a photograph:
http://www.aximel.com/files/SC80951S.jpg
Though I could not focus close enough to get a picture of the wafer, it
appears to have some regions that suggest an EPROM memory array, some
smaller regions that might be SRAM, and various other complicated looking
shapes that may just be a CPU of some sort.
I'm mostly interested in learning what it is. But if you can find me a
data sheet I'll gladly share half a dozen of them with you. :-)
Closest item I've found to that part number is SC80909L which appears to
be a Motorola multifunction device like a transistor array used in
Tektronics equipment. Not the same at all I know, but perhaps of some use.
Try getting a close look through the window - you will be able to tell
if it is a CPU or EPROM by the layout, or if you can get a picture and
post it someone here may be able to tell what you've got.
This could be a 68705P3 (28 pin), you could do some diode checks against
the pinout and compare with an EPROM to see what you get. Data lines,
Address Lines, and Select lines should be similar between EPROMs, but if
it is a 68705P3 then it will read quite differently...
How many of these do you have? Hardly seems worth the bother for one or
two, 100 would be different...
John :-#)#
--
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
www.flippers.com
"Old pinballers never die, they just flip out"
2:25 a.m.
1. Change the S to an M = MC80951S
2. Loose the 9 = MC8051S
Yup it?s a version of a Motorola 8051
Regards
?
Rod Smallwood
-----Original Message-----
From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org]
On Behalf Of John Robertson
Sent: 03 September 2012 17:27
To: General Discussion: On-Topic Posts Only
Subject: Re: Mystery Motorola Chip SC80951S
Amardeep S Chana wrote:
Every so often, since the beginning of the
"interweb," I've wasted a few
hours scouring the vast stores of information for a glimmer of data on the
Motorola SC80951S chip. All I find are the part pimps peddling them for
sums which they'll only disclose if you file a formal RFQ. No datasheets
or even a simple description of the part's function can be found anywhere.
I amuse myself by wondering if I had somehow acquired some super secret
component that played a crucial part in the downfall of the Eastern Bloc.
Eventually reality kicks in and I realize it wouldn't have a Motorola logo
on it if that was the case. So here I am, before what probably amounts to
the most comprehensive brain trust in vintage compute technology, to ask
if
any of you folks know what this thing is. Here is a
link to a photograph:
http://www.aximel.com/files/SC80951S.jpg
Though I could not focus close enough to get a picture of the wafer, it
appears to have some regions that suggest an EPROM memory array, some
smaller regions that might be SRAM, and various other complicated looking
shapes that may just be a CPU of some sort.
I'm mostly interested in learning what it is. But if you can find me a
data sheet I'll gladly share half a dozen of them with you. :-)
Closest item I've found to that part number is SC80909L which appears to
be a Motorola multifunction device like a transistor array used in
Tektronics equipment. Not the same at all I know, but perhaps of some use.
Try getting a close look through the window - you will be able to tell
if it is a CPU or EPROM by the layout, or if you can get a picture and
post it someone here may be able to tell what you've got.
This could be a 68705P3 (28 pin), you could do some diode checks against
the pinout and compare with an EPROM to see what you get. Data lines,
Address Lines, and Select lines should be similar between EPROMs, but if
it is a 68705P3 then it will read quite differently...
How many of these do you have? Hardly seems worth the bother for one or
two, 100 would be different...
John :-#)#
--
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
www.flippers.com
"Old pinballers never die, they just flip out"
4492
days inactive
4494
days old
7 comments
6 participants
participants (6)
-
aek＠bitsavers.org -
asc135＠gmail.com -
cc＠informatik.uni-stuttgart.de -
pinball＠telus.net -
rodsmallwood＠btconnect.com -
wdonzelli＠gmail.com