2 Jan
2009
2 Jan
'09
5:30 a.m.
I have a PDP11/53, which on inspection contains 2x M7651:
- One cabled to a same-sized card made by Logica and marked 3490/300
- One cabled to a double-sized card marked 3350/304 (assuming Logica)
Both these cards appear to be SCSI controllers, but does anyone know any
more about them? And I'm wondering if there might be some hoops to jump
through in their use, E.g. only support certain drives or require a patched
O/S.
Looks like one of these M7651/SCSI controller pairs is going to have to go,
in order to make room for ethernet...
Regards,
Andrew
--
Andrew Back
a at smokebelch.org
2 Jan
2 Jan
8 a.m.
On Fri, Jan 2, 2009 at 5:30 AM, Andrew Back <andrew at smokebelch.org> wrote:
I have a PDP11/53, which on inspection contains 2x
M7651:
- One cabled to a same-sized card made by Logica and marked 3490/300
- One cabled to a double-sized card marked 3350/304 (assuming Logica)
Both these cards appear to be SCSI controllers, but does anyone know any
more about them? And I'm wondering if there might be some hoops to jump
through in their use, E.g. only support certain drives or require a patched
O/S.
The first reference you should check is pdp11-field-guide.txt which
lists the M7651 as the DRV11-WA General-Purpose DMA Interface. You
can find the manual by searching for EK-DRVWA-UG
The other boards to which they are attached are most likely special
purpose application boards and not any sort of general purpose SCSI
controllers.
9:43 a.m.
On (08:00 02/01/09), Glen Slick wrote:
On Fri, Jan 2, 2009 at 5:30 AM, Andrew Back <andrew
at smokebelch.org> wrote:
The only other board I've not ID'ed is an Emulex CS-041021, and the machine
was hooked-up to another cabinet containing a Fujitsu M2263SA SCSI drive.
The Logica boards terminate on the cab at 50 pin D types, one male and one
female. The Emulex terminates at a 34 pin IDC connector.
Andrew
--
Andrew Back
a at smokebelch.org
I have a PDP11/53, which on inspection contains
2x M7651:
- One cabled to a same-sized card made by Logica and marked 3490/300
- One cabled to a double-sized card marked 3350/304 (assuming Logica)
Both these cards appear to be SCSI controllers, but does anyone know any
more about them? And I'm wondering if there might be some hoops to jump
through in their use, E.g. only support certain drives or require a patched
O/S.
The first reference you should check is pdp11-field-guide.txt which
lists the M7651 as the DRV11-WA General-Purpose DMA Interface. You
can find the manual by searching for EK-DRVWA-UG
The other boards to which they are attached are most likely special
purpose application boards and not any sort of general purpose SCSI
controllers.
10:50 a.m.
On Fri, Jan 2, 2009 at 9:43 AM, Andrew Back <andrew at smokebelch.org> wrote:
The only other board I've not ID'ed is an Emulex CS-041021, and the machine
was hooked-up to another cabinet containing a Fujitsu M2263SA SCSI drive.
The Logica boards terminate on the cab at 50 pin D types, one male and one
female. The Emulex terminates at a 34 pin IDC connector.
pdp11-field-guide.txt lists the CS04 as an Emulex 16-64-line
RS-232/422 communications controller. Emulates 2-8 DHV11s.
12:35 p.m.
I have a PDP11/53, which on inspection contains 2x
M7651:
- One cabled to a same-sized card made by Logica and marked 3490/300
- One cabled to a double-sized card marked 3350/304 (assuming Logica)
Both these cards appear to be SCSI controllers, but does anyone know any
more about them? And I'm wondering if there might be some hoops to jump
through in their use, E.g. only support certain drives or require a patched
O/S.
The 3490 is an IBM Tape Drive Subsystem and the 3350 is an IBM DASD
disk drive. both usually hooked up to IBM mainframes. Neither are
SCSI.
We went through a lot of these peripherals in the1990s. The last 3350
we got went to a collector. The 3550s were usually controlled by a
3880 which could handle up to 4 of them, if I remember correctly.
It looks to me that the cards were for hooking up to these IBM
peripherals. Interesting set of cards. I have never heard of them.
Paxton
--
Paxton Hoag
Astoria, OR
USA
12:53 p.m.
We went through a lot of these peripherals in
the1990s. The last 3350
we got went to a collector. The 3550s were usually controlled by a
3880 which could handle up to 4 of them, if I remember correctly.
3350s were originally controlled by the 3830. I do not think all 3880s
could control 3350s - there may have been a microcode upgrade
involved.
I am always on the lookout of a 3880 and 3380s. And more 3350s, for that matter.
--
Will
5609
days inactive
5609
days old
5 comments
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participants (4)
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andrew＠smokebelch.org -
glen.slick＠gmail.com -
innfoclassics＠gmail.com -
wdonzelli＠gmail.com