Thanks to all who've replied so far.
I need to stress that this is an EIDE device and does appear as rz0 in /dev
a DEC engineer has checked all the settings and is as perplexed as I am!
FYI here's the relevant section from the on-line documentation.
Steve Dunstan
Computer Manager
WTCEID
dept. of Zoology
Univ. of Oxford
UK
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3.1 EIDE (ATAPI) CD-ROM Support
The DIGITAL Personal Workstation 433AU and 500AU class systems contain two EIDE (ATAPI)
ports.
This version of DIGITAL UNIX supports the use of ATAPI CD-ROM devices attached to the
internal EIDE adapter of the DIGITAL Personal Workstation 433AU and 500AU class systems. The
CD-ROM devices will appear as SCSI rz devices. rz0 and rz1 are the device names for devices
attached to the first EIDE port. rz8 and rz9 are the device names for devices attached to the second
EIDE port. The EIDE master devices are rz0 and rz8. The EIDE slave devices are rz1 and rz9.
The device names are reserved even if no devices are connected to those ports at the present time.
The SCSI buses on the system are numbered rz16 and above.
Any application designed to use a SCSI CD-ROM will be able to use an EIDE CD-ROM.
Received on Thu Aug 07 1997 - 18:37:58 NZST