Xerox 820-II diskette formats
snhirsch at gmail.com
Mon May 4 16:11:09 CDT 2009
On Mon, 4 May 2009, js at cimmeri.com wrote:
> Steven Hirsch wrote:
>> On Sun, 3 May 2009, Chuck Guzis wrote:
>>> The 820-II 8" samples in my library show 77*1*26*256 and 77*2*26*256
>> That's fairly conservative, but works out to almost a 1MB for the DSDD
>> diskettes. Most systems I'm familiar with formatted at 32 x 256 in DD
> What?! Using what controller chip? How that's even possible while
> maintaining the same 360rpm?
Too early in the day... Just checked the sources for the formatter, and
it's 30 256-byte sectors per track not 32.
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