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Article View: comp.sys.nsc.32k
Article #1552

Multiple ICM3216 connected through Minibus?

#1552
From: Dave Mason
Date: Tue, 31 Jan 1989 16:04
21 lines
1366 bytes
We have several ICM3216's which we are pretty happy with.

We are trying to connect 2 (for now) of them through the Minibus.  We
have them physically connected, have changed the jumpers for the
Minibus ID numbers and the interrupt addresses, but we are having
problems.

They do not seem to communicate reliably over the bus; i.e. if we have
values 1 2 3 4 5 6 7 in memory addresses 0,1,2,3,4,5,6 on board 1 and
we try to read at address C00000,C00001,etc. on the other board, we
get 1 2 0 23 17 etc.  In other words, occasionally it works fine, but
we can't find any rhyme nor reason to when or why.

Has anybody else done this?  Anybody from National out there who can help?

The setup is 2 processor boards one with 1MB, one with 4MB connected
through the correct 96 pin connector (minibus connector only),
jumpered as minibus masters 7 and 6.  We've tested continuity through
the 2 boards+connector & it's fine.

Help! Please!	Thanks	../Dave
Technical Details
Message-ID: <1989Jan31.160411.1696@tmsoft.uucp>
Path: arc1-ca.pugleaf.net!utzoo!mnetor!tmsoft!mason

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Path: arc1-ca.pugleaf.net!utzoo!mnetor!tmsoft!mason
From: mason@tmsoft.uucp (Dave Mason)
Newsgroups: comp.sys.nsc.32k
Subject: Multiple ICM3216 connected through Minibus?
Message-ID: <1989Jan31.160411.1696@tmsoft.uucp>
Date: 31 Jan 89 16:04:11 GMT
Reply-To: mason@tmsoft.UUCP (Dave Mason)
Followup-To: comp.sys.nsc.32k
Organization: TM Software Associates/Ryerson Polytechnical Institute, Toronto
Lines: 21