🚀 go-pugleaf

Graham Philip Crowe says...

> 
> I recently bought a secondhand 'FutureDomain TMC-850MEX' SCSI controller but was
> unable to get manuals. I think that there is a problem with the jumper settings
> but cannot find out. Is there anyone who has any information about the jumpers
> on this or similar cards. I am especially interested in the SCSI terminator
> jumper.
> 
> Thank you
> Graham Crowe
> --
> 

I just happen to have a manual for that, here goes...
Keep in mind that the TMC-850MEX, is the "feature free" 
version, the cheapest of the bunch....

The three termination resistors, located under the internal 
SCSI connector, are required ONLY if you do not have devices 
on both sides of the card, ie: You only have one HD, plugged 
into the internal port, and nothing plugged on the external 
one, or only a scanner on the external port, and no HD on 
the internal. If you have something on both ports, then 
remove all three termination resistors.

The device you have plugged in, needs a resistor on the end 
of the chain, ie:

Terminator-----HardDisk----Harddisk-----Card-----Scanner----
-Terminator.

The TMC series of cards, only work on either IRQ5 or IRQ7, 
using jumpers W6 and W7. (A three pin jumper, approx center 
of the card. Jumper over W6 (pins 1-2) is IRQ5, over W7 
(pins 2-3) is IRQ 3.

Jumpers W1 W2 and W3 control the memory address of the card, 
as follows:

  W1     W2     W3     Address
----------------------------------------------------------
|open  |open  |1-2,3-4|CA00h           Factory default
----------------------------------------------------------
|Closed|open  |1-2,3-4|C800h
----------------------------------------------------------
|Open  |Closed|1-2,3-4|CE00h
----------------------------------------------------------
|Closed|Closed|1-2,3-4|DE00h
----------------------------------------------------------
|Open  |Open  |1-3,2-4|E800h
----------------------------------------------------------
|Open  |Closed|1-3,2-4|EC00h
----------------------------------------------------------

Note, in the W3 column:

1-2,3-4 means a jumper closing pins 1&2, and another across 
3&4 (Jumpers will be vertical)
1-3,2-4 means a jumper over pins 1&3, and 2&4 (jumpers 
horizontal)

W5 controls the zero wait state. Factory default is OPEN, no 
zero wait state support.

Hope this helps...

-- 
=Don=

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