On 10/07/17 03:06, Rick Bensene via cctalk wrote:
If I recall correctly, these machines used an 8" Micropolis hard disk drive.
These were most definitely not SCSI, or even SASI. They used a proprietary
Micropolis parallel interface.
The disk expansion connector, while looking like it might be a SASI/SCSI
connector, isn't...it brings out that Micropolis interface.
Many, many moons ago, when I worked at Tektronix, I purchased a number of these
drives (I think that they had a capacity of 35MB , IIRC) at the Tektronix
Country Store (they were cheap), and built an interface for a Tektronix Board
Bucket (6809 CPU) so I could use the drives on the system. It wasn't a
difficult interface (it was TTL, if I remember right) to write code to talk to,
and I was able write a driver for it for the FLEX operating system.
Do you have any information about this Micropolis interface?
I wouldn't try plugging anything into that external connector, unless it's an
original Tektronix disk expansion unit for the 8560.
Yes. I haven't plugged anything in there. If anyone has an original
Tektronix disk unit to give away (not necessarily for free), I'd be
interested.
Of course, as mentioned, this is all IIRC (If I Recall Correctly).
Understood.
regards,
chris
