Ok, here is the updated info on the XP1000 SCSI problems.

When I tried gunzip'ing a file, this occurred:

Jan 6 23:26:07 host /netbsd: stray 6600 irq 47
Jan 6 23:26:07 host /netbsd: stray 6600 irq 47
This message repeated three times
Jan 6 23:26:08 host /netbsd: stray 6600 irq 47; stopped logging
isp0: mbox cmd 15 failed with error 0
isp0: isp_control MBOX_ABORT failure (code 0)
isp0: isp_watch failed to abort command
isp0: Ultra Mode Capable
isp0: Board Revision 1040C, loaded F/W Revision 4.65.0
isp0: Last F/W revision was 5.57.1
isp0: 243 max I/O commands supported
isp0: Enabled FW features 0x1
isp0: command for target 0 lun 0 was aborted
isp0: timeout initiated SCSI bus reset of bus 0
<repeated 8 times>
isp0: isp_watch failed to abort command
isp0: Ultra Mode Capable
isp0: Board Revision 1040C, loaded F/W Revision 4.65.0
isp0: Last F/W revision was 5.57.1
isp0: 243 max I/O commands supported
isp0: mbox cmd 15 failed with COMMAND_ERROR
isp0: Ultra Mode Capable
...
isp0: command for fast posting handle 0x6 not found
isp0: mbox cmd 15 failed with COMMAND_ERROR
isp0: isp_control MBOX_ABORT failure (code 4005)
isp0: isp_watch failed to abort command
isp0: command for fast posting handle 0x59 not found
<cycles through address 0x68>
isp0: Ultra Mode Capable
...
isp0: command for fast posting handle 0x6 not found
<cycles through address 0xa>


Eventually gets back to the "stray 6600 irq 47" and repeats

Note that this was typed in from notes, not pasted in from logs. 

Hope this helps clear things up a bit.

Sven