17 Dec
2001
17 Dec
'01
10:02 p.m.
From: Richard Erlacher <edick(a)idcomm.com>
won't support, and that's formatting with
interleaving. The NEC parts
seem to
be unable to format a diskette with other than strict
ordinal sector
numbering,
Obviously you know not how the part works. I used to put sectors down on
floppies with physical skew for CPM using 765/9266/37C65. It was dirt
simple.
When the 765 and clones write they want CHRN, All you need to do is make
R the sector number what ever you want it to be then feed it to the FDC
when
doing a format track. What's difficult about that?
Allison
17 Dec
17 Dec
11:57 p.m.
Yup! That's already been pointed out ... I made the choice to use the Western
MFM-capable part back in '78 and never looked back. I let someone else tell me
why, but I never regretted it. The process with the Western part is apparently
the same, though there was something critical that the NEC part didn't do.
Maybe it had to do with altering the gap lengths in order to accomodate an extra
sector, or some such. Of course, possible or not, I never ended up doing that
either.
Dick
----- Original Message -----
From: "ajp166" <ajp166(a)bellatlantic.net>
To: <classiccmp(a)classiccmp.org>
Sent: Monday, December 17, 2001 9:02 PM
Subject: Re: MITS 2SIO serial chip?
From: Richard Erlacher <edick(a)idcomm.com>
won't support, and that's formatting with
interleaving. The NEC parts
seem to
be unable to format a diskette with other than
strict ordinal sector
numbering,
Obviously you know not how the part works. I used to put sectors down on
floppies with physical skew for CPM using 765/9266/37C65. It was dirt
simple.
When the 765 and clones write they want CHRN, All you need to do is make
R the sector number what ever you want it to be then feed it to the FDC
when
doing a format track. What's difficult about that?
Allison
8425
days inactive
8425
days old
1 comments
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