HPIB disks (was Re: IDEA - Collector interest database)

From: Ethan Dicks <dickset_at_amanda.spole.gov>
Date: Wed May 12 19:39:25 2004

On Wed, May 12, 2004 at 07:50:14PM -0400, der Mouse wrote:
I wrote:
> > The only HPIB disks I have _are_ of trivial digital size and _non_
> > trivial physical size -
> > Commodore D9060 and D9090 units (5MB and 7.5MB, 5.25"-full height MFM
> > drives inside). I keep thinking of trying to rewrite the ROM code
> > and turn the software-driven SASI port into a SCSI port.
> The software-driven SASI port of what?

The SASI port is internal - there are two PCBs in the drive enclosure,
a "DOS board" (C='s term) with one processor to talk GPIB to the outside
world, and another processor to talk SASI to the other board, a Xebec?
SASI<->ST-506 board. The drive mech is either a Tandon TM602S or a TM603S.

The idea was to upgrade the "DOS board" firmware to speak SCSI rather than
SASI (same electrical interface, _slightly_ different command set) to use
a more modern 50MB-200MB drive of the sort I have in stacks on the shelf.

Slightly easier than implementing a command-set compatible drive from


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Received on Wed May 12 2004 - 19:39:25 BST

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