1 Jun
2025
1 Jun
'25
1:10 a.m.
I have an AT&T branded SCSI enclosure. Two half-height bays with the
drives held vertically (on their sides), with a door that opens to
expose one for a tape drive, activity lights labeled hard drive and
tape, CN50 connectors, the AT&T beige and brown
color scheme I associate with 3B's and 6300 PCs. No model number.
Anyone have any idea what this was made for?
1 Jun
1 Jun
7:04 a.m.
Sounds like a box for a 7300. Pics?
On June 1, 2025 4:10:45 AM EDT, Andrew B via cctalk <cctalk(a)classiccmp.org> wrote:
I have an AT&T branded SCSI enclosure. Two half-height bays with the
drives held vertically (on their sides), with a door that opens to
expose one for a tape drive, activity lights labeled hard drive and
tape, CN50 connectors, the AT&T beige and brown
color scheme I associate with 3B's and 6300 PCs. No model number.
Anyone have any idea what this was made for?
4:52 p.m.
On 6/1/2025 10:04 AM, Christopher Zach via cctalk wrote:
Sounds like a box for a 7300. Pics?
Pics might be nice. Based on the color description I
was thinking 3B2. I had a half dozen 7300's but I never
saw a SCSI card for the 7300 and I don't remember brown
in the color scheme other than the discoloration caused
by smokers owning them. :-)
bill
6:25 p.m.
He sent me a picture, not the same color or design scheme as my 7300's
external tape drive. Which I really have to try using sometime....
C
On 6/1/2025 7:52 PM, Bill Gunshannon via cctalk wrote:
On 6/1/2025 10:04 AM, Christopher Zach via cctalk wrote:
Sounds like a box for a 7300. Pics?
Pics might be nice. Based on the color description I
was thinking 3B2. I had a half dozen 7300's but I never
saw a SCSI card for the 7300 and I don't remember brown
in the color scheme other than the discoloration caused
by smokers owning them. :-)
bill
8:18 a.m.
My guess AT&T had scsi era hardware, not super successful, that they sold
or re-badged to extend the life of their product line. Would a 3B2 or UNIX
PC have a scsi controller for an external storage device? Maybe AT&T sold
something compatible with Sun hardware to try to tap into the scsi storage
market, for a telecommunications product
On Sun, Jun 1, 2025 at 10:53 AM Andrew B via cctalk <cctalk(a)classiccmp.org>
wrote:
I have an AT&T branded SCSI enclosure. Two half-height bays with the
drives held vertically (on their sides), with a door that opens to
expose one for a tape drive, activity lights labeled hard drive and
tape, CN50 connectors, the AT&T beige and brown
color scheme I associate with 3B's and 6300 PCs. No model number.
Anyone have any idea what this was made for?
9:07 a.m.
The 3B1 (ie. UNIX PC) did not do SCSI. That was an MFM system.
THe 3B2 lower end models were MFM, and higher end were SCSI based systems, although
I don't remember any external SCSI ports on them.
There's an AT&T SCSI external shoebox Tape drive listed on eBay now.
I'd say its likely that they were done for the 3B2..
http://www.unixwiz.net/3b2/tapedrives.html
On Sun, Jun 01, 2025 at 11:18:12AM -0400, Bill Degnan via cctalk wrote:
My guess AT&T had scsi era hardware, not super
successful, that they sold
or re-badged to extend the life of their product line. Would a 3B2 or UNIX
PC have a scsi controller for an external storage device? Maybe AT&T sold
something compatible with Sun hardware to try to tap into the scsi storage
market, for a telecommunications product
On Sun, Jun 1, 2025 at 10:53 AM Andrew B via cctalk <cctalk(a)classiccmp.org>
wrote:
>
> I have an AT&T branded SCSI enclosure. Two half-height bays with the
> drives held vertically (on their sides), with a door that opens to
> expose one for a tape drive, activity lights labeled hard drive and
> tape, CN50 connectors, the AT&T beige and brown
> color scheme I associate with 3B's and 6300 PCs. No model number.
> Anyone have any idea what this was made for?
>
>
8:01 p.m.
Here's a pic: https://jumpshare.com/s/lsa1xlnzYYOwUgUfkphK
The door built into the front plus the whole housing being fairly deep
makes me think it was intended some flavor of QIC drive.
That shoebox on ebay is a different mystery!
DB-25 connectors with an Exabyte, weird.
Doug McIntyre via cctalk <cctalk(a)classiccmp.org> writes:
The 3B1 (ie. UNIX PC) did not do SCSI. That was an MFM
system.
THe 3B2 lower end models were MFM, and higher end were SCSI based
systems, although
I don't remember any external SCSI ports on them.
There's an AT&T SCSI external shoebox Tape drive listed on eBay now.
I'd say its likely that they were done for the 3B2..
http://www.unixwiz.net/3b2/tapedrives.html
On Sun, Jun 01, 2025 at 11:18:12AM -0400, Bill Degnan via cctalk wrote:
> My guess AT&T had scsi era hardware, not super successful, that they sold
> or re-badged to extend the life of their product line. Would a 3B2 or UNIX
> PC have a scsi controller for an external storage device? Maybe AT&T sold
> something compatible with Sun hardware to try to tap into the scsi storage
> market, for a telecommunications product
>
> On Sun, Jun 1, 2025 at 10:53 AM Andrew B via cctalk <cctalk(a)classiccmp.org>
> wrote:
>
> >
> > I have an AT&T branded SCSI enclosure. Two half-height bays with the
> > drives held vertically (on their sides), with a door that opens to
> > expose one for a tape drive, activity lights labeled hard drive and
> > tape, CN50 connectors, the AT&T beige and brown
> > color scheme I associate with 3B's and 6300 PCs. No model number.
> > Anyone have any idea what this was made for?
> >
> >
2 Jun
2 Jun
4:08 a.m.
On Sun, Jun 1, 2025 at 11:08 PM Andrew B via cctalk <cctalk(a)classiccmp.org>
wrote:
Here's a pic: https://jumpshare.com/s/lsa1xlnzYYOwUgUfkphK
Seems like the 6300 aesthetic more than the 3B style.
KJ
4:38 a.m.
What you really need is the SCSI controller compatible with the drive and
the system that needs an SCSI peripheral. I'd check business magazines
like ComputerWorld to see if they have business ads for this unit. They
might have been very pricey at the time, not a consumer product.
Bill
On Mon, Jun 2, 2025 at 7:18 AM Ken Seefried via cctalk <
cctalk(a)classiccmp.org> wrote:
On Sun, Jun 1, 2025 at 11:08 PM Andrew B via cctalk
<cctalk(a)classiccmp.org
wrote:
> Here's a pic: https://jumpshare.com/s/lsa1xlnzYYOwUgUfkphK
Seems like the 6300 aesthetic more than the 3B style.
KJ
7:09 a.m.
On 2025-06-02 06:08, Ken Seefried via cctalk wrote:
On Sun, Jun 1, 2025 at 11:08 PM Andrew B via cctalk
<cctalk(a)classiccmp.org>
wrote:
> Here's a pic:
https://jumpshare.com/s/lsa1xlnzYYOwUgUfkphK
Seems like the 6300 aesthetic more than the 3B style.
Can confirm, I have one of those attached to one of my 6300s. Worked
fine last time I used it.
Richard KF9VP
11:26 a.m.
Richard Schauer via cctalk <cctalk(a)classiccmp.org> writes:
On 2025-06-02 06:08, Ken Seefried via cctalk wrote:
Cool, thanks!
On Sun, Jun 1, 2025 at 11:08 PM Andrew B via
cctalk
<cctalk(a)classiccmp.org>
wrote:
> Here's a pic:
https://jumpshare.com/s/lsa1xlnzYYOwUgUfkphK
Seems like the 6300 aesthetic more than the 3B
style.
Can confirm, I have one of those attached to one of my 6300s. Worked
fine last time I used it.
Richard KF9VP
5:21 p.m.
On 6/2/2025 2:26 PM, Andrew B via cctalk wrote:
Richard Schauer via cctalk <cctalk(a)classiccmp.org> writes:
Wasn't the 6300 not AT&T at all but just a rebadged Olivetti PC?
bill
On 2025-06-02 06:08, Ken Seefried via cctalk
wrote:
Cool, thanks! On Sun, Jun 1, 2025 at 11:08 PM Andrew B via
cctalk
<cctalk(a)classiccmp.org>
wrote:
> Here's a pic:
https://jumpshare.com/s/lsa1xlnzYYOwUgUfkphK
Seems like the 6300 aesthetic more than the 3B
style.
Can confirm, I have one of those attached to one of my 6300s. Worked
fine last time I used it.
Richard KF9VP
6:20 p.m.
Now I want to know what SCSI card they put into a 6300. Does anyone here
have a working 6300 with SCSI card and SCSI peripheral running?
Bill
On Mon, Jun 2, 2025 at 8:28 PM Bill Gunshannon via cctalk <
cctalk(a)classiccmp.org> wrote:
On 6/2/2025 2:26 PM, Andrew B via cctalk wrote:
Richard Schauer via cctalk <cctalk(a)classiccmp.org> writes:
Wasn't the 6300 not AT&T at all but just a rebadged Olivetti PC?
bill
On 2025-06-02 06:08, Ken Seefried via cctalk
wrote:
Cool, thanks!
On Sun, Jun 1, 2025 at 11:08 PM Andrew B via
cctalk
<cctalk(a)classiccmp.org>
wrote:
> Here's a pic:
https://jumpshare.com/s/lsa1xlnzYYOwUgUfkphK
Seems like the 6300 aesthetic more than the 3B
style.
Can confirm, I have one of those attached to one of my 6300s. Worked
fine last time I used it.
Richard KF9VP
3 Jun
3 Jun
1:38 a.m.
Bill Gunshannon via cctalk <cctalk(a)classiccmp.org> writes:
On 6/2/2025 2:26 PM, Andrew B via cctalk wrote:
Yep, Olivetti M24 = AT&T PC 6300 = Xerox 6060
Richard Schauer via cctalk <cctalk(a)classiccmp.org> writes:
Wasn't the 6300 not AT&T at all but just a rebadged Olivetti PC?
bill On 2025-06-02 06:08, Ken Seefried via cctalk
wrote:
Cool, thanks! On Sun, Jun 1, 2025 at 11:08 PM Andrew B via
cctalk
<cctalk(a)classiccmp.org>
wrote:
> Here's a pic:
https://jumpshare.com/s/lsa1xlnzYYOwUgUfkphK
Seems like the 6300 aesthetic more than the 3B
style.
Can confirm, I have one of those attached to one of my 6300s. Worked
fine last time I used it.
Richard KF9VP
2 Jun
2 Jun
11:26 a.m.
Do you know the controller model number?
On Mon, Jun 2, 2025 at 10:38 AM Richard Schauer via cctalk <
cctalk(a)classiccmp.org> wrote:
On 2025-06-02 06:08, Ken Seefried via cctalk wrote:
On Sun, Jun 1, 2025 at 11:08 PM Andrew B via
cctalk
<cctalk(a)classiccmp.org>
wrote:
> Here's a pic:
https://jumpshare.com/s/lsa1xlnzYYOwUgUfkphK
Seems like the 6300 aesthetic more than the 3B
style.
Can confirm, I have one of those attached to one of my 6300s. Worked
fine last time I used it.
Richard KF9VP
8:23 p.m.
On 2025-06-02 13:26, Bill Degnan via cctalk wrote:
Do you know the controller model number?
OK, I tore into mine tonight. Here's what I see.
My machine is a PC 6300, the CPU 2 model. (I have three of these, and
another of them was marked CPU 3/X. Didn't check the third.) It was
built in 12/84 by Olivetti in Italy.
The two cables from the drive enclosure go to DB-25 female connectors on
two separate cards. In fact, it appears that other than sharing an
enclosure and power supply, the two drives have nothing to do with each
other.
The disk controller (marked with a red dot on the connector on my
machine) was made in 1987. It is a 1/3-length card, a WD1002A-WX1.
There are flying wire ends of a ribbon cable from the data and control
header plugs to the DB-25 connector, which is in a separate slot from
the card. Looks like a pretty standard MFM controller to me, not SCSI
in any way.
The tape controller (marked with a green dot on the connector on my
machine) was made in 1986. It is a full-length card, a Wangtek
30006-007 rev C. It has an 8085, 8257, 6264 SRAM, 2764 EPROM, what
appears to be a chipset of 2x CF40100BN, 1x CF40101N, and 1x CF40102N,
and some PALS marked Everex. I couldn't Google up what those CF4010...
ICs do very readily, although several sellers claim to have some. There
are two cards which are almost identical on Ebay right now, items
393821606763 and 201549538949, although neither of them has the DB-25
connector on the bracket. On mine it goes to a ribbon cable, which goes
into the header by means of flying wire ends.
The drive enclosure is an AT&T Comcode 405117714 (I guess I'd take that
to be a model number, since there isn't any other), with FCC ID
CLP77N187072. It is made in USA and contains a 20 MB hard drive and a
60 MB (or 67 MB according to the Iotamat tape I have in mine) tape
drive.
It occurs to me that although I occasionally see AT&T 7300/3B1 systems,
I rarely see 6300s. Somehow I happened onto the three that I have a
long time ago and that was it.
Richard KF9VP
8:54 p.m.
On Mon, Jun 2, 2025, 8:38 PM Richard Schauer via cctalk <
cctalk(a)classiccmp.org> wrote:
On 2025-06-02 13:26, Bill Degnan via cctalk wrote:
The wd1002 cards did sasi or scsi to MFM. I have on that went to my DEC
Rainbow univation controller...
Warner
The tape controller (marked with a green dot on the connector on my
Do you know the controller model number?
OK, I tore into mine tonight. Here's what I see.
My machine is a PC 6300, the CPU 2 model. (I have three of these, and
another of them was marked CPU 3/X. Didn't check the third.) It was
built in 12/84 by Olivetti in Italy.
The two cables from the drive enclosure go to DB-25 female connectors on
two separate cards. In fact, it appears that other than sharing an
enclosure and power supply, the two drives have nothing to do with each
other.
The disk controller (marked with a red dot on the connector on my
machine) was made in 1987. It is a 1/3-length card, a WD1002A-WX1.
There are flying wire ends of a ribbon cable from the data and control
header plugs to the DB-25 connector, which is in a separate slot from
the card. Looks like a pretty standard MFM controller to me, not SCSI
in any way.
machine) was made in 1986. It is a full-length card,
a Wangtek
30006-007 rev C. It has an 8085, 8257, 6264 SRAM, 2764 EPROM, what
appears to be a chipset of 2x CF40100BN, 1x CF40101N, and 1x CF40102N,
and some PALS marked Everex. I couldn't Google up what those CF4010...
ICs do very readily, although several sellers claim to have some. There
are two cards which are almost identical on Ebay right now, items
393821606763 and 201549538949, although neither of them has the DB-25
connector on the bracket. On mine it goes to a ribbon cable, which goes
into the header by means of flying wire ends.
The drive enclosure is an AT&T Comcode 405117714 (I guess I'd take that
to be a model number, since there isn't any other), with FCC ID
CLP77N187072. It is made in USA and contains a 20 MB hard drive and a
60 MB (or 67 MB according to the Iotamat tape I have in mine) tape
drive.
It occurs to me that although I occasionally see AT&T 7300/3B1 systems,
I rarely see 6300s. Somehow I happened onto the three that I have a
long time ago and that was it.
Richard KF9VP
3 Jun
3 Jun
12:07 a.m.
Thanks very much for the additional info!
Does your drive enclosure have DB-25's on the back, or only on the ISA
cards with DB-25 to CN-50 cables connecting the enclosure?
Where are the Comcode and FCC ID's on yours?
I don't think mine has those.
My drive enclosure has a pair of CN50s connected by a ribbon cable with
two internal IDC header connectors, looks like a vanilla SCSI
configuration with the two drives on the same bus.
Strangely, mine has only a single molex power drop, perhaps there was
originally a splitter that went missing with the drives.
Interestingly, the SCSI cable is flipped in twisted sections so that the
drives can be upside down with respect to each other; the orientation
tabs for the two IDC connectors point towards each other and towards the
center of the enclosure. I counted the pins and traced the wires just
to make sure it wasn't a floppy cable.
Richard Schauer via cctalk <cctalk(a)classiccmp.org> writes:
On 2025-06-02 13:26, Bill Degnan via cctalk wrote:
Do you know the controller model number?
OK, I tore into mine tonight. Here's what I see.
My machine is a PC 6300, the CPU 2 model. (I have three of these, and
another of them was marked CPU 3/X. Didn't check the third.) It was
built in 12/84 by Olivetti in Italy.
The two cables from the drive enclosure go to DB-25 female connectors
on two separate cards. In fact, it appears that other than sharing an
enclosure and power supply, the two drives have nothing to do with
each other.
The disk controller (marked with a red dot on the connector on my
machine) was made in 1987. It is a 1/3-length card, a WD1002A-WX1.
There are flying wire ends of a ribbon cable from the data and control
header plugs to the DB-25 connector, which is in a separate slot from
the card. Looks like a pretty standard MFM controller to me, not SCSI
in any way.
The tape controller (marked with a green dot on the connector on my
machine) was made in 1986. It is a full-length card, a Wangtek
30006-007 rev C. It has an 8085, 8257, 6264 SRAM, 2764 EPROM, what
appears to be a chipset of 2x CF40100BN, 1x CF40101N, and 1x CF40102N,
and some PALS marked Everex. I couldn't Google up what those
CF4010... ICs do very readily, although several sellers claim to have
some. There are two cards which are almost identical on Ebay right
now, items 393821606763 and 201549538949, although neither of them has
the DB-25 connector on the bracket. On mine it goes to a ribbon
cable, which goes into the header by means of flying wire ends.
The drive enclosure is an AT&T Comcode 405117714 (I guess I'd take
that to be a model number, since there isn't any other), with FCC ID
CLP77N187072. It is made in USA and contains a 20 MB hard drive and a
60 MB (or 67 MB according to the Iotamat tape I have in mine) tape
drive.
It occurs to me that although I occasionally see AT&T 7300/3B1
systems, I rarely see 6300s. Somehow I happened onto the three that I
have a long time ago and that was it.
Richard KF9VP
4:04 a.m.
On 2025-06-03 02:07, Andrew B via cctalk wrote:
Does your drive enclosure have DB-25's on the
back, or only on the ISA
cards with DB-25 to CN-50 cables connecting the enclosure?
DB-25s, I would say; they're not big enough to have 50 pins. I can
check tonight.
Where are the Comcode and FCC ID's on yours?
I don't think mine has those.
Serial number label on the bottom, toward the rear end.
Richard KF9VP
4 Jun
4 Jun
3:54 a.m.
On 2025-06-03 06:04, Richard Schauer via cctalk wrote:
On 2025-06-03 02:07, Andrew B via cctalk wrote:
Verified last night. They are DB-25 female for both disk and tape on
the drive enclosure, same as on the computer end.
Richard KF9VP
Does your drive enclosure have DB-25's on the
back, or only on the ISA
cards with DB-25 to CN-50 cables connecting the enclosure?
DB-25s, I would say;
they're not big enough to have 50 pins. I can
check tonight. 
3 Jun
3 Jun
12:31 a.m.
On Tue, Jun 3, 2025 at 4:39 AM Richard Schauer via cctalk
<cctalk(a)classiccmp.org> wrote:
The tape controller (marked with a green dot on the
connector on my
machine) was made in 1986. It is a full-length card, a Wangtek
30006-007 rev C. It has an 8085, 8257, 6264 SRAM, 2764 EPROM, what
appears to be a chipset of 2x CF40100BN, 1x CF40101N, and 1x CF40102N,
and some PALS marked Everex.
I think I've come across that chipset on a Wangtek QIC02-QIC36
interface. It's likely your board is for a QIC36 interfaced drive too
12:41 a.m.
On Tue, Jun 3, 2025 at 8:31 AM Tony Duell <ard.p850ug1(a)gmail.com> wrote:
On Tue, Jun 3, 2025 at 4:39 AM Richard Schauer via cctalk
<cctalk(a)classiccmp.org> wrote:
There is some information in the Wangtek
20554-001 'Single Board Formatter OEM manual'
and the
20593-001 'PC-36 Controller OEM manual'
The latter may be a closely-related board.
Available from bitsavers here
http://www.bitsavers.org/pdf/wangtek/
-tony
The tape controller (marked with a green dot on
the connector on my
machine) was made in 1986. It is a full-length card, a Wangtek
30006-007 rev C. It has an 8085, 8257, 6264 SRAM, 2764 EPROM, what
appears to be a chipset of 2x CF40100BN, 1x CF40101N, and 1x CF40102N,
and some PALS marked Everex.
I think I've come across that chipset on a Wangtek QIC02-QIC36
interface. It's likely your board is for a QIC36 interfaced drive too 
1:29 a.m.
It occurs to me that although I occasionally see
AT&T 7300/3B1 systems, I rarely see 6300s. Somehow
I happened onto the three that I have a long time ago
and that was it.
Interesting - that's my exact opposite experience. I see the 6300s with some
regularity, but I've been keeping a lazy eye out for a 7300/3B1 for a while without
much luck. I have one in pieces in deep storage that I'll never get rebuilt, but I
haven't seen another one pop up close enough to me to pick up.
It doesn't help that they're heavy and inconvenient to ship, and pretty delicate
these days.
-mike
________________________________
From: Richard Schauer via cctalk <cctalk(a)classiccmp.org>
Sent: Tuesday, June 3, 2025 5:23:42 AM
To: General Discussion: On-Topic and Off-Topic Posts <cctalk(a)classiccmp.org>
Cc: Richard Schauer <rws(a)mst269.org>
Subject: [cctalk] Re: What was this AT&T SCSI enclosure for?
On 2025-06-02 13:26, Bill Degnan via cctalk wrote:
Do you know the controller model number?
OK, I tore into mine tonight. Here's what I see.
My machine is a PC 6300, the CPU 2 model. (I have three of these, and
another of them was marked CPU 3/X. Didn't check the third.) It was
built in 12/84 by Olivetti in Italy.
The two cables from the drive enclosure go to DB-25 female connectors on
two separate cards. In fact, it appears that other than sharing an
enclosure and power supply, the two drives have nothing to do with each
other.
The disk controller (marked with a red dot on the connector on my
machine) was made in 1987. It is a 1/3-length card, a WD1002A-WX1.
There are flying wire ends of a ribbon cable from the data and control
header plugs to the DB-25 connector, which is in a separate slot from
the card. Looks like a pretty standard MFM controller to me, not SCSI
in any way.
The tape controller (marked with a green dot on the connector on my
machine) was made in 1986. It is a full-length card, a Wangtek
30006-007 rev C. It has an 8085, 8257, 6264 SRAM, 2764 EPROM, what
appears to be a chipset of 2x CF40100BN, 1x CF40101N, and 1x CF40102N,
and some PALS marked Everex. I couldn't Google up what those CF4010...
ICs do very readily, although several sellers claim to have some. There
are two cards which are almost identical on Ebay right now, items
393821606763 and 201549538949, although neither of them has the DB-25
connector on the bracket. On mine it goes to a ribbon cable, which goes
into the header by means of flying wire ends.
The drive enclosure is an AT&T Comcode 405117714 (I guess I'd take that
to be a model number, since there isn't any other), with FCC ID
CLP77N187072. It is made in USA and contains a 20 MB hard drive and a
60 MB (or 67 MB according to the Iotamat tape I have in mine) tape
drive.
It occurs to me that although I occasionally see AT&T 7300/3B1 systems,
I rarely see 6300s. Somehow I happened onto the three that I have a
long time ago and that was it.
Richard KF9VP
3:21 a.m.
On Mon, Jun 2, 2025 at 11:39 PM Richard Schauer via cctalk <
cctalk(a)classiccmp.org> wrote:
On 2025-06-02 13:26, Bill Degnan via cctalk wrote:
Thank you. I just happen to have my 6300 on the table. I have never had
issues with it, never needed to open mine for service, or it has been many
years. I have owned mine for over 20 years.
Bill
Do you know the controller model number?
OK, I tore into mine tonight. Here's what I see.
My machine is a PC 6300, the CPU 2 model. (I have three of these, and
another of them was marked CPU 3/X. Didn't check the third.) It was
built in 12/84 by Olivetti in Italy.
The two cables from the drive enclosure go to DB-25 female connectors on
two separate cards. In fact, it appears that other than sharing an
enclosure and power supply, the two drives have nothing to do with each
other.
The disk controller (marked with a red dot on the connector on my
machine) was made in 1987. It is a 1/3-length card, a WD1002A-WX1.
There are flying wire ends of a ribbon cable from the data and control
header plugs to the DB-25 connector, which is in a separate slot from
the card. Looks like a pretty standard MFM controller to me, not SCSI
in any way.
The tape controller (marked with a green dot on the connector on my
machine) was made in 1986. It is a full-length card, a Wangtek
30006-007 rev C. It has an 8085, 8257, 6264 SRAM, 2764 EPROM, what
appears to be a chipset of 2x CF40100BN, 1x CF40101N, and 1x CF40102N,
and some PALS marked Everex. I couldn't Google up what those CF4010...
ICs do very readily, although several sellers claim to have some. There
are two cards which are almost identical on Ebay right now, items
393821606763 and 201549538949, although neither of them has the DB-25
connector on the bracket. On mine it goes to a ribbon cable, which goes
into the header by means of flying wire ends.
The drive enclosure is an AT&T Comcode 405117714 (I guess I'd take that
to be a model number, since there isn't any other), with FCC ID
CLP77N187072. It is made in USA and contains a 20 MB hard drive and a
60 MB (or 67 MB according to the Iotamat tape I have in mine) tape
drive.
It occurs to me that although I occasionally see AT&T 7300/3B1 systems,
I rarely see 6300s. Somehow I happened onto the three that I have a
long time ago and that was it.
Richard KF9VP
23
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26
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23 comments
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