problems with 2 Xylogics 713's

[Webster Dove]

We have 2 Xylogics 713 controllers on our 3/E server driving 8 ESDI drives
(6 CDC, 2 HP).  These emulate the Sun 7053 controller.

Mar 19 21:52:08 peach vmunix: xdc0 at vme16d32 0xee80 vec 0x44 
Mar 19 21:52:08 peach vmunix: xd0 at xdc0 slave 0
Mar 19 21:52:08 peach vmunix: xd0: <CDC Wren VI 94196-766 cyl 1630 alt 2 hd 15 sec 52>
Mar 19 21:52:08 peach vmunix: xd1 at xdc0 slave 1
Mar 19 21:52:08 peach vmunix: xd1: <CDC Wren VI 94196-766 cyl 1630 alt 2 hd 15 sec 52>
Mar 19 21:52:08 peach vmunix: xd2 at xdc0 slave 2
Mar 19 21:52:08 peach vmunix: xd2: <HP 97548 793 R2 cyl 1455 alt 2 hd 16 sec 56>
Mar 19 21:52:08 peach vmunix: xd3 at xdc0 slave 3
Mar 19 21:52:08 peach vmunix: xd3: <HP 97548 793 R2 cyl 1455 alt 2 hd 16 sec 56>
Mar 19 21:52:08 peach vmunix: xdc1 at vme16d32 0xee90 vec 0x45 
Mar 19 21:52:08 peach vmunix: xd4 at xdc1 slave 0
Mar 19 21:52:08 peach vmunix: xd4: <CDC Wren VI 94196-766 cyl 1630 alt 2 hd 15 sec 52>
Mar 19 21:52:08 peach vmunix: xd5 at xdc1 slave 1
Mar 19 21:52:08 peach vmunix: xd5: <CDC Wren VI 94196-766 cyl 1630 alt 2 hd 15 sec 52>
Mar 19 21:52:08 peach vmunix: xd6 at xdc1 slave 2
Mar 19 21:52:08 peach vmunix: xd6: <CDC Wren VI 94196-766 cyl 1630 alt 2 hd 15 sec 52>
Mar 19 21:52:08 peach vmunix: xd7 at xdc1 slave 3
Mar 19 21:52:08 peach vmunix: xd7: <CDC Wren VI 94196-766 cyl 1630 alt 2 hd 15 sec 52>

We periodically get spurious level 3 interrupts

Mar 19 22:12:15 peach vmunix: spurious level 3 interrupt
Mar 20 00:18:18 peach vmunix: spurious level 3 interrupt
Mar 20 03:58:46 peach vmunix: spurious level 3 interrupt

and occasionally one or the other controller goes catatonic

Mar 16 11:52:10 peach vmunix: xdc0: system lost interrupt from controller. SOFTWARE RECOVERED
Mar 16 11:52:10 peach vmunix: xdc0: returned unmatched iopb addr ff03d3d
Mar 16 11:52:10 peach vmunix: xd0e: read retry (zero sector count) -- blk #91376, abs blk #302756
Mar 16 11:52:32 peach vmunix: xdc0: controller not responding

I am trying to determine whether the problem is:

1) Our specific controllers
2) Our 3/E
3) The controllers in general
4) the fact that there are 2 in one system

Has anyone else had similar experiences to those mentioned above?

Dr. Webster Dove				Dr. Webster Dove
Experimental Computing Systems ('X')		Lockheed Sanders Inc.  
Signal Processing Center of Technology		144 Daniel Webster Hwy.
Lockheed Sanders Inc.				Merrimack, NH.  03054  

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