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From: kirchner@informatik.uni-kl.de (Reinhard Kirchner)
Newsgroups: comp.periphs.scsi
Subject: Future Domain TMC-860 has 8 bit bus
Message-ID: <7431@uklirb.informatik.uni-kl.de>
Date: 4 Jan 91 15:19:25 GMT
Sender: news@uklirb.informatik.uni-kl.de
Lines: 23


Hello,

just for curiosity:

Yesterday I installed my new Future Domain TMC-860, which is advertized and
I bougth it for this, as a 16-bit hostadapter.

Looking at the bus contacts I wondered: Nearly no pads on the AT slot !

Looking nearer: The AT part of the slot is used only for additional
interrupt lines ( 10,11,12,13,14 ), but NOT for the databus. So this
is really a 8 bit adapter like the earlier ones. It may be faster than those
for other reasons, but definitly not because of bus width.

BTW another strange topic on these adapters:
They do not use a IO port address, and they do not have a shared memory.
( So says the manual ) So how does the processor access it ?
There is only some ROM for BIOS on it, which has its address range.

Reinhard Kirchner
Univ. Kaiserslautern, Germany
kirchner@uklirb.informatik.uni-kl.de