1772 floppy controller hack...

Gene Buckle geneb at deltasoft.com
Thu Jan 10 16:22:17 CST 2008


In my quest to use 1.44MB 3.5" floppy drives on my Ampro, I've found that 
the 1772-02-02 variant of the floppy controller chip can be "overclocked" 
to 16Mhz in order to correctly read/write 3.5" high density disks.

Beyond needing to adjust the step rate to 6ms to compensate for the 
doubled clock rate, is there anything else I should be aware of?  I've 
seen many mentions of this particular hack on the Atar ST line of 
computers to achieve the same goal, but I wasn't sure if there was some 
other factor I had to be aware of.

Thanks all!

g.


-- 
Proud owner of F-15C 80-0007
http://www.f15sim.com - The only one of its kind.


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