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- Path: sparky!uunet!comp.vuw.ac.nz!zl2tnm!toyunix!don
- Newsgroups: comp.sys.dec.micro
- Subject: Re: Micro PDP 11
- Message-ID: <15636357@zl2tnm.gen.nz>
- From: don@zl2tnm.gen.nz (Don Stokes)
- Date: 23 Dec 92 05:31:50 GMT
- Sender: news@zl2tnm.gen.nz (GNEWS Version 2.0 news poster.)
- References: <BznHn7.A5F@world.std.com>
- Distribution: world
- Organization: The Wolery
- Lines: 24
-
- mbg@world.std.com (Megan B Gentry) writes:
- > only. Second, the backplane. Since you mentioned they
- > are MicroPDP-11's, I know they do have 22-bit support.
- > The backplane is Q-CD for the first three slots and
- > 'zig-zag' q-q for the remaining slots.
-
- Serpentine, not zig-zag. Grant priority in a BA23 backplane goes:
-
- Slot AB CD
- 1 1 *
- 2 2 *
- 3 3 *
- 4 4 5
- 5 7 6
- 6 8 9
- 7 11 10
- 8 12 13
-
- * "CD" interconnect -- uVAX or 11/8x memory only.
-
- --
- Don Stokes, ZL2TNM (DS555) don@zl2tnm.gen.nz (home)
- Network Manager, Computing Services Centre don@vuw.ac.nz (work)
- Victoria University of Wellington, New Zealand +64-4-495-5052
-