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- Path: sparky!uunet!news.claremont.edu!nntp-server.caltech.edu!kby
- From: kby@cco.caltech.edu (Kimo B. Yap)
- Newsgroups: alt.folklore.computers
- Subject: Re: PDP ftp archive
- Date: 24 Nov 1992 05:50:20 GMT
- Organization: California Institute of Technology, Pasadena
- Lines: 11
- Message-ID: <1esfqsINN8hi@gap.caltech.edu>
- References: <13632@ecs.soton.ac.uk> <1992Nov20.142937.9123@news.uiowa.edu> <1992Nov21.003656.17491@leland.Stanford.EDU> <1992Nov22.114337.15485@news.columbia.edu> <1992Nov23.185607.15965@leland.Stanford.EDU>
- NNTP-Posting-Host: alumni.caltech.edu
-
- More details for the -10 side:
- The main difference between a 1090 and a 1091 was that a 1090 had EXTERNAL
- channels an memory whereas the 1091 had INTERNAL channels and memory. A 1090
- was (more easily) upgradeable to a 1099, TOPS-10 SMP (Symmetric Multiprocessing)
- one of the best timeshare implementations of such (but I'm biased).
- The largest SMP site was Union Carbide (Duane Winkler) with a 5-processor
- SMP site.
- You could get MOS external memory for a 1090 from Ampex.
- A 1099 could be with 1095 processors if you wanted the double-sized cache.
- I believe 105x systems were KA based, 107x systems were KI based, and 109x
- systems were KL based.-kby (fomerly @kl1026.dec.enet.com)
-