Help on HP 82901 drive

Chuck Guzis cclist at
Thu Jun 14 03:50:23 CDT 2007

On 14 Jun 2007 at 1:18, Roy J. Tellason wrote:

> On Tuesday 12 June 2007 20:55, Chuck Guzis wrote:
> > On 12 Jun 2007 at 23:37, Roberto Bazzano wrote:
> > > There is a MB8866 on the board. No MB8877 at all.
> >
> > IIRC, this is a Fujitsu FDC.  Vaguely related to the WD1781, I think.
> I've never heard of the 178x parts,  only 177x and 179x.  What's that one all 
> about?

Scarce (or maybe scarcer) than hen's teeth.  It's basically a 1771 
wired to handle MFM codes.  I've got a couple, believe it or not.  
It'd be interesting to see if the MB8866 is anything like that.


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