26 Feb
2007
26 Feb
'07
11:42 a.m.
--- river <river at zip.com.au> wrote:
Hi,
Yo
I've been trying to find (on the net) information
regarding the signal
timing for the 3.5inch floppy diskette drive.
An Intel data book might help. The 8272 is the
functional equivalent of the NEC u765 floppy disk
controller. Another variant is the Rockwell 6765.
I want to play around with one and connect it to one
of my home-brewed
systems (6502 or 8085), but I need to know the
timing of the signals, plus
what the different logic levels means on some
signals, etc. I can get plenty
of information regarding the 34-pin connector and
signal names, but nothing
on timing and logic levels.
Perhaps it wouldn't be the worst idea to mimic that
portion of some *other* board or puter that controls a
floppy. Sort of cut and paste? Then there's the code
part...
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