[Coco] floppy disk controller question for those that still use them

Gene Heskett gene.heskett at verizon.net
Wed Jan 27 14:16:48 EST 2010


Greetings all;

I have developed an odd problem and in my attempts to trouble-shoot it, I 
have found that one of my floppy controllers, a shack 3029, actually has a 
Fujitsu MB8877A fdc chip in it.

I can boot my nitros9 system from any controller in slot 3 that actually has 
the DOS command in its eprom.

If I boot from an SC-II and go thru what it takes to restore floppy access, a 
dir /d0 works just fine.

But if I boot that exact disk using the shack 3029 controller, the disk is 
"wrong type".

Is this a known incompatibility between the WD1773 in the SC-II and the 
MB8877A in the 26-3029?

-- 
Cheers, Gene
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)

Think honk if you're a telepath.



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