Diloq SQ703 to SQ706 conversion

Chris Zach cz at alembic.crystel.com
Sun Aug 16 14:16:18 CDT 2020

Don't know much about the Dilogs (other than there were tape and disk 
versions) but ESDI disks can still be found on Ebay, I have a spare 
150mb drive if you need it. They are quite quick all things considered, 
and some of the ESDI controllers had pretty good hardware acceleration 
features in addition to block and burst mode DMA.


(running 327mb ESDI disks on my 11 and am very happy with performance)

On 8/16/2020 11:24 AM, Nigel Johnson via cctalk wrote:
> I'm getting back to trying to restore my MicroVax II.  Existing
> controllers are ESDI and MFM, disks hard to find.
> So I would like to convert a brand-new DQ703 I have to SQ706 so I can
> mount SCSI disks.
> I understand it is just  a prom change.
> Does anybody have any info, or perhaps a PROM image?
> cheers,
> Nigel

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