[Info-vax] vms 5.4 cmd cqd-220/T disk not seen

[David Goodwin]

On Monday, June 28, 2021 at 2:54:01 AM UTC+12, ihatecom... at gmail.com wrote:
> Hi, 
> My objective it to get my microvax 2 bootable. 
> I have a bootable microvax 3800 with DSSI RF71 and RF73. 
> I have a cmd qbus disk controller with an RZ25 disk attached. 
> The onboard serial port utility sees the drive and tests it Ok on both systems. 
> My problem is the Microvax 3800 does not see the drive as an RA/RD disk and therefore I can't install VMS on it. The 'show device' after self test shows UQSSP Disk Controller 0 (772150) ? 
> Added as the 3rd controller the system sees the DSSI RF drives ok but the CMD drive is seen as '?' 
> I have tried SYSGEN as well but should the pre-boot show device see the drive as an RA or RF? 
> If I install it in the MV2 as the only disk controller, the TK70 boots STABACKIT but only sees MUA0, no drives. 
> The only odd thing is that the CQD22-M serial config utility shows a tape menu as well as disk. At some point it asked me if i wanted it to be disk only which I replied yes to. The menu then has disk test options and scsi bus scan options. 
> I have also tried a different scsi disk DSP3120 RH20-e with the same problem. 
> Am I missing something obvious, any support appreciated to stop my brain from exploding. 

Is this really a CQD220/T? Not a CQD220/M or a CQD220/TM?

The impression I got is T = TMSCP (tape drives) and M = MSCP (disks). So the CQD220/TM supports tape drives and hard disks while the CQD220/M supports hard disks only. If this really is a CQD220/T perhaps it only supports tape devices?