unixpc tape backup problem

[Ken Staggers]

HELP!!!!

Could someone help me with this problem?
We have a unixpc and a tape backup drive.  When I was running the att "Tape
Backup Diagnostics" disk, it always gets stuck at the part:
"Checking DMA address operation...."

Yet when I run the regular diagnostics disk, processor and memory check
works perfectly.  NO errors, and it doesnt get stuck.

Any ideas on what could be wrong?

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Also, what is the key in hooking up another terminal to the unixpc?
We have 6 terminals and an expansion box with a 3 combo boards, which the
system recognizes. 
  1- What should the setup be for the other terminal
  2- How do we get it to act like a terminal (i.e. where in install do
     we go?  We have told it that RS232 port 1-6 are in TERMINAL mode, 
     9600 baud, but it doesnt work)?

There is no response.  We have hooked it up with a null modem cable and we
are in multiuser mode.

HELP!!!!!

--Ken Staggers
(...!rutgers!rochester!cci632!sjfc!kes3200)