2 Jan
2009
2 Jan
'09
8:35 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