[Coco] disk controller chip

[Mark Marlette]

Gene,

I did the HD mod to the 1793 controller and it required the 8877.

So yes, it did do 500K for the HD mode.

Regards,

Mark
http://www.cloud9tech.com




________________________________
 From: Gene Heskett <gheskett at wdtv.com>
To: coco at maltedmedia.com 
Sent: Tuesday, May 6, 2014 10:26 AM
Subject: Re: [Coco] disk controller chip
 

On Tuesday 06 May 2014 11:26:01 Darren A did opine:

> On Tue, May 6, 2014 at 7:33 AM, Frank Swygert <farna at amc-mag.com> wrote:
> > Note that the MB8877 and WD1773 are pin compatible -- they can be
> > swapped. The MB8877 is a "work alike" of the WD1773 made by another
> > company, I assume under license but could have been reverse
> > engineered.
> 
> It was made by Fujitsu and is a work-alike, pin-compatible version of
> the Western Digital FD1793. The notable difference is that it only
> requires a 5V supply whereas the 1793 requires 5V and 12V.
> 
> Darren
Are you saying that it could run at 500 kilobaud then?
> 
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Cheers, Gene
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