25 Mar
2009
25 Mar
'09
4:43 p.m.
I remember the MicroVAX I as well. Slow can be defined by trying to compile
on it.
At the time, my company moved to a 11/750 and then a 11/785. The 11/785 was
smoking
fast compared to the MV I.
-dan
----- Original Message -----
From: "Ethan Dicks" <ethan.dicks at gmail.com>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
Sent: Tuesday, March 24, 2009 11:46 PM
Subject: Re: Looking for early versions of MicroVMS & VWS
On Wed, Mar 25, 2009 at 12:09 AM, Zane H. Healy
<healyzh at aracnet.com>
wrote:
At 4:15 PM -0400 3/24/09, Paul Koning wrote:
I never got to play with an 11/73 back in the day (we stopped buying
PDP-11 gear around the days of the F-11 chip), but I would not be
shocked to learn that the J-11 is twice as fast as a MicroVAX-I. It
really is dog slow. It's a good thing the MicroVAX-II was much, much
faster or DEC would have been in trouble long before they eventually
got into trouble.
-ethan
RSTS on an 11/73 driving an TU50 would stream quite well (with
Backup). Is a MicroVAX-I slower than that? Or does RSTS do streaming
I/O better than VMS? (I suppose that's possible...) Interrupt
latency shouldn't be much of an issue; the thing is that you have to
queue up multiple buffers.
Isn't the PDP-11/73 about twice as fast as a MicroVAX I? Remember the
MicroVAX I is only 0.3 VUPS.