Subject: Re: http://www.netbsd.org/Library/Hardware/Machines/DEC/vax/full.html
To: None <abs@NetBSD.ORG>
From: Varga Akos Endre <hamster@pc0176sd.sysdata.siemens.at>
List: port-vax
Date: 02/02/1998 14:33:51
Some corrections and hm... trivia for the page mentioned in the Subject :)

-The 11/780 was definately not released in '84, this must me a typo. It
was intruduced in '77, shipping begun in '78

-the 11/730 was introduced in '82

-the 11/750 was introduced in '80

-the 11/874 was 4 11/780s around shared MA780 memory. This machine was a
mystery to quite a few people. Some say only 5 was built. It had never
been advertised as it was a special configuration, nothing for the masses
;-)

-the 8600-series was released in '84. Some specs:
  4.2 VUPs, 256 MB max. memory, , 16KB@80ns cache

-8650: (in 1986) a stronger version of the 8600:
  6.0 VUPS, max 256 MB RAM, 16KB@55 ns cache

-8800: a VAXBI machine with SMP option
  8-12 VUPs, max 256 MB RAM, 64 KB@45ns cache
 the 870 was the slower version (around 6 VUPS)

-there were two other VAXBI VAX-subseries introduced in '86,
 the 85xx family (around 6 VUPS, max 320 MB RAM)
 and the 8200/8300 (1.2/2.3 VUPs, max 128 MB RAM)

-the MicroVAX I's CPU consists of a custom uP and some other components,
 and that together is the uV I. CPU. I think the FP instructions were
 all implemented in microcode.

-I saw a VR60 mentioned that it would contain 4 RA82s. I don't know this
 enclosure, but I don't think 4 RA82s would fit into 68.58x53.43x45.08 cms
 ;) 

-The RA60 is 205 MB on removable media

-TU81 (and in fact all "big tapes"): I think the TU81 had an own
 interface card that spoke TMSCP with the CPU. Capacity is hard
 to tell, it depends on the writing density, the length of the
 tape :) These were 9-track tape drives, the TU80 could do 1600 bpi,
 I don't know what a TU79/80/81+ could do...

-I think the TU58 should be mentioned, while it was not so much a storage
 device in a sense we say it today, but it was important console media
 for many systems. It was a 800bpi tape that contained 256 KB on a 
 small casette tape (called DecTape II). Average access time was 9.3 sec

-Something on the 6000-series:
 
 6200, introduced in '88, with BI and the CVAX chip, used SMP, the third
 digit in the numbering refers to the number of CPUs
 2.8 VUPs, 256 max memory, 1K@80ns on-chip and 256KB@160ns on-board cache

 6000-300 (in '89): CVAX+ chipset, introduced the XMI bus
 3.8 VUPs, memory and cache as with the 6200

 6000-400 (same year): with the Rigel chipset and vector-processing
 abilities
 13 VUPs, max 512 MB RAM, 16 ns cycle time, 45-90 MFLOPS

 6000-500 (1990) with the Mariah chipset, write-back cache
 specs similar to 6000-400

 6000-600 (1991) NVAX chipset
 32 VUPs, max 1 GB memory, 12 ns cycle time,
 10 KB on-chip & 2 MB on-board cache

-I don't know much about the 7000 (and 10000) series. They're quite
new, and not for the average NetBSD-people, but it would make an
interesting contrast between the older VAXen and these new beasts :)

-It would be interesting to have the introduction date of the members
of the 3100-family. I don't know about the earlier ones, but the 
3100m40 was introduced in '92, the 3100m85 in '94, the 3100m96 in '95
and the 3100m88/98 in '96. 

-The 4000-family:

 4000-200 (1990): 5 VUPs, 64MB max RAM, 42 MB max disks, qbus, 35 ns cycle
 time

 4000-300 (1990): 8 VUPs, 256 MB max RAM, 42 GB max disks, qbus, 28 ns
 cycle time
 
 4000-500 (?): 24 VUPs, 512 MB max RAM, 42 GB disks, qbus, 14 ns cycle

And... If you'd like to, you can use the pictures on
http://www.netweb.hu/hamster/oldiron/vax/
freely. Link them in, download them and link them locally ;) 

Thanks for your time!

  /   ___ _  _ ___ ____ ___ ___  
 /__//__///_///__   /  /_   /  ) Varga Akos Endre   hamster@netweb.hu
/  //  //   /___/  /  /__  /  (   www.netweb.hu/hamster/english.html
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