-----Original Message-----
From: cctalk-bounces at
classiccmp.org
[mailto:cctalk-bounces at
classiccmp.org] On Behalf Of Ethan Dicks
Sent: maandag 21 mei 2007 15:20
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: Well,now I've gone and done it... Dragged home
more big(ish) iron...
[...snip...]
I really liked working with the 11/750. I used one every day
for most of the time between 1984 and 1993, and did all of
the hardware upkeep on it for the last few years it was
installed. As a college boy/punk kid, I installed the 2MB to
8MB myself (we decided not to drop the money on upgrading it
above 8MB).
This weekend I think I will buy the L0022 memory controller plus
two M7199 (4Mb) memory boards to replace the other controller and
1 Mb memory boards. Got 6 of those, so after the memory upgrade
I will have two spare 1 Mb boards ... have not decided yet *if*
I will spend the $100 for the three boards, or just keep the 6 Mb
that are installed now.
It was OK for 20-50 users with 8MB, but we mostly ran
MAIL,
MASS-11 (word processing), and compiled C programs with it.
Oh, yeah... lots of EMPIRE. Had to keep EMPIRE on it for the
boss ;-)
What's EMPIRE? A game?
Would be a nice reason to fire up the VAX more often :-)
I heard the
boot tape loaded the microcode.
For the 11/730 (and 11/725), yes, the microcode comes off the
TU58 every time you power up. Once the microcode is loaded,
you can boot without a tape mounted, but in practice, folks
just left their boot tapes mounted.
And that explains why many TU58 rollers have a "D" shape ...
The VAX-11/750
(I have one) can
boot from any device available in hardware, that is any UNIBUS
peripheral.
Not just UNIBUS - MASSBUS, too. There's a DR boot PROM out
there - we used it to boot our SI9900 w/160MB Fujitsu that
emulated 2x RM03.
True. As with the L0022/M7199, I can get an L0007 MASSBUS interface
for $40. It is just a nice to have ... although I have two RM03's,
I don't think I will connect them to the VAX. I intend to connect
them to the PDP-11/70, but never say never ...
The RA70 series are hardly power-hungry, but are a bit
thin
on the ground. I have a couple of RA70s that some day I'd
like to mount inside one of my 11/750s so I can have an
in-cabinet machine. Of course what I'd _really_ like is a
Unibus SCSI controller, but those are a bit rare.
I could say "me too", but OTOH, a VAX with RA81's does look nice
or at least impressive :-)
- Henk.
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