HP 9816 CP/M-68K

Fred Cisin cisin at xenosoft.com
Mon Feb 12 15:55:36 CST 2018

>> But, I don't know how to FORMAT a track with multiple sector sizes with
>> NEC 765 type controller.  Not as hard with WD style controllers.

On Mon, 12 Feb 2018, Chuck Guzis via cctalk wrote:
> It's actually not too difficult.  There were DOS utilities that could,
> for example, copy IBM XDF format.
> The trick is that on the 765 and its ilk, the FORMAT command writes
> sector headers according to the length parameter in the *command*,
> whereas the WRITE SECTOR command writes things out according to the
> length in the sector ID header.

Thank you!
Although these days, it's just curiousity and nostalgia.

I learn great new [currently useless to me] fun stuff on this list every 

20+ years ago, when I needed to, after a number of failed attempts,
I used double sided (and 96tpi) drives in a TRS80 model 3,
and/or "COPY"ed a disk using a flux transition board.

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