Text File

Aqumix.1019 net.periphs utcsrgv!utzoo!decvax!ittvax!qumix!msc Thu Feb 25 12:16:36 1982 IEEE 488 bus

Here is a digest of the replies I received to my query about controlling an IEEE 488 bus from a vax.

The Ungermann-Bass NET/ONE will support an IEEE 488. This seems like overkill however. I haven't heard of any UNIBUS devices, which would seem the sensible way to go.

There are 488 controllers for PDP-11s. Try one of those on the UNIBUS. It might also be possible to control a 488 through a DR11-B or DR11-C; It would probably require a little bit of external logic. Fairchild and others have 488 controller chips out if you want to go that route.

DEC actually makes an IEEE488 UNIBUS board which I've heard actually works. I don't know if they support it on the VAX tho... It is called the IB11 according to my 1980 Peripherals Handbook, pg 293. It is a bus MASTER, set up to control up to 15 devices.

Thanks to Alan Watt, Steve Tarr and Bruce Borden for their help.

Mark Callow

----------------------------------------------------------------- gopher://quux.org/ conversion by John Goerzen <jgoerzen@complete.org> of http://communication.ucsd.edu/A-News/

This Usenet Oldnews Archive article may be copied and distributed freely, provided:

1. There is no money collected for the text(s) of the articles.

2. The following notice remains appended to each copy:

The Usenet Oldnews Archive: Compilation Copyright (C) 1981, 1996 Bruce Jones, Henry Spencer, David Wiseman.