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
----------------------------------------------------------------------
PDP 11 Page http://www.netweb.hu/hamster/pdp-11/
SchKol http://schkol.sch.bme.hu/e_index.html
----------------------------------------------------------------------