VAXstation 3100 history (Was ... different)

From: Zane H. Healy <healyzh_at_aracnet.com>
Date: Thu Dec 2 13:28:01 1999

>I still wonder why. The only thing I can think of is that either the driver
>for the RC25 was removed or that VMS would no longer fit on an RC25 cartridge
>as a boot volume. The drives used two platters, one fixed, one removable,
>26Mb

Don't know about as a boot disk, but the RC25 is still supported. The SPD
is kind of unclear though, says the minimum version for support is V6.1 and
that it's Q-Bus. Of course it says you need Unibus for RL02's.

I suspect it was a question of RAM. Looking at the configurations for the
11/725 and 11/730 it looks as if the 11/730 would hold at least a couple
more MB. V6.2 is the final verision to support the 11/730, 11/750, 11/751,
11/780, 11/782, 11/785, the VAXft's, and MV I, VS I. The last version to
support the MicroVAX II family is V7.2, I know that's because of the memory
limit.

>each. You spun them up as a pair. When I got my 11/725 in 1988 ($4K), the
>guys who shipped it didn't ship it with a removable cart (they also shipped
>it sans grant cards and the terminator shoved all the way up the UNIBUS which
>fried the PSU on power-on).

I'm wondering if it wouldn't be possible to replace the RC25 with a 3rd
Party SCSI controller. Though I'm not aware of any 11/725's in anyones
collection.

                                Zane
| Zane H. Healy | UNIX Systems Adminstrator |
| healyzh_at_aracnet.com (primary) | Linux Enthusiast |
| healyzh_at_holonet.net (alternate) | Classic Computer Collector |
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Received on Thu Dec 02 1999 - 13:28:01 GMT

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