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Conference noted::hackers_v1

Title:-={ H A C K E R S }=-
Notice:Write locked - see NOTED::HACKERS
Moderator:DIEHRD::MORRIS
Created:Thu Feb 20 1986
Last Modified:Mon Aug 03 1992
Last Successful Update:Fri Jun 06 1997
Number of topics:680
Total number of notes:5456

192.0. "VAXes: how many kinds?" by FURILO::KAISER () Mon Jan 20 1986 22:25

How many different kinds of VAXes are there?  Here's a list of VAXes in use or
very near announcement that seem to me to merit being called major variants of
the family (deliberating omitting ruggedized and Tempest VAXes, and variations
consisting solely of one user's change to WCS).  Do you agree with this list?
Why?  Why not?  Do you consider hot floating point a "major variance"?

To avoid any spurious ranking by any possible measure of goodness, the list is
arranged alphabetically by the names that occurred to me.

---Pete
--------------------------------------------------------------------------------
	MILVAX (note A)
	MicroVAX I (D floating)
	MicroVAX I (G floating)
	MicroVAX II
	MicroVAX II multiprocessor (note B)
	VAX 8200
	VAX 8300
	VAX 8600
	VAX 8650
	VAX 8800
	VAX-11/725
	VAX-11/730
	VAX-11/750
	VAX-11/751
	VAX-11/780
	VAX-11/780 (Purdue variant, note C)
	VAX-11/782
	VAX-11/785
	VAXstation 52x
	VAXstation 55x
	VAXstation I (D floating)
	VAXstation I (G floating)
	VAXstation II
	VAXstation II/GPX

Note A: manufactured under license by Norden
Note B: no software support from DEC
Note C: no support from DEC
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192.1SNOV04::QUODLINGTue Jan 21 1986 00:574
Sounds about right to me, but I am interested in the B and C variants? Why
are purdue different and how does this �Vax multiprocess.

Q
192.2ULTRA::PRIBORSKYTue Jan 21 1986 09:068
The Purdue variant is a 780 Multiprocessor that uses two CPU's on the same SBI.
They had to hack up the microcode to get it to work (something about running
user-mode code at elevated IPL.)   It was done at about the same time as we
announced the 782.

There is support in the �VAX-II for up to 4 processors, but there is no software
support for it (except, I believe, in VAXeln if you build a multiprocessor
version from sources.) 
192.3AJAX::CALLASTue Jan 21 1986 11:4913
A few notes:

There are no G floating VAXstation Is. All VAXstation Is are D float. A few
people in DEC have G float MicroVAX Is and put QVSSs on them, but that isn't
really the same thing.

VAXstation 500 series hardly counts as a type. The Tek scope on it is simply
a peripheral -- VAXstation I, II, and II/GPX all require their own SYSLOAxxx,
so they should count.

You forgot the 8300.

	Jon
192.4FURILO::KAISERMon Jan 27 1986 23:313
Did not neither forget no 8300!

---Pete
192.5ELKTRA::HUGHESThu Jan 30 1986 18:1510
A couple that I know of, in 'one-of' states.

A hardware simulator was used in the early days of VMS to allow testing
to start before real 780 hardware was available. The V1.0 listings had lots
of tests in error paths (bugcheck) to determine if it was on a real VAX
or the simulator. Perhaps someone out there would like to add some detail.

DECwest built a dual processor MicroVAX I and used it for ELN testing.

gary
192.6PASTIS::MONAHANMon Feb 03 1986 11:378
	I saw the hardware simulator. It was an 11/70 (in part) but
with things bolted on to accelerate VAX instructions. It also had
a 32 bit wide front panel light display, but since it was regarded
as so confidential it had one half labelled "address" and the other
labelled "data". It ran baselevel 3 of VMS. The earlier baselevels
were tested on software simulations on LCG machines.

	Dave
192.7JON::MORONEYMon Feb 03 1986 11:542
Wasn't the thing actually _2_ 11/70's, 1 to interpret instructions and one
to do everything else?
192.8Questions ..CLT::COWANKen Cowan, 381-2198Sat Feb 22 1986 20:113
    What's a MILVAX?   What's a 751?
    
    	KC
192.9MAASSG::RMURPHYRick MurphySun Feb 23 1986 11:564
    MILVAX: 	Militarized VAX. Built by Norden? (Wag)
    VAX-11/751: OEM Version of 750. Interesting package.. fits in a
    		19 inch rack.
    	-Rick
192.10MILVAX is built by NordenFURILO::KAISERWed Feb 26 1986 08:295
>>    MILVAX: 	Militarized VAX. Built by Norden? (Wag)

Yes.

---Pete
192.11Multi-KA630 systemsFURILO::KAISERWed Feb 26 1986 08:336
Digital has at least one OEM customer -- I work with them -- building products
based on multi-KA630 MicroVAX IIs.  Their system has a master that runs VMS, and
three slave processors in the same backplane that run VAXELN images.  They buy
both systems and boards from us (recently approved).

---Pete