3 Feb
2000
3 Feb
'00
6:13 p.m.
On Feb 3, 22:53, Glenatacme(a)aol.com wrote:
Sadly, the WD1770 fcd IC in my home-brew fd i/o board
finally gave up the
ghost. Fourteen years of service is admirable -- when it finally
croaked,
I felt like weeping.
Does anyone know of a source for these? Or the 1772
(I believe Tony
Duell
once mentioned that the 1772 could replace the 1770 in
most cases -- but
I
could be wrong).
The 1772 was designed to be a plug-in replacement. The main (only?)
difference is in the programmed step rates.
Also, I understand that the C64 floppy drives (1581?)
used the 1770 but
I'm
not a commie and can't immediately verify this.
I'd be surprised if so. I thought all Commodore micros apart from their
ill-fated PCs used GCR. There are plenty of list members who know much
more about C= stuff than I do, though...
Atari STs used the 1772, so that's another potential source.
--
Pete Peter Turnbull
Dept. of Computer Science
University of York