MFM IC's (Was RE: Any AMIGA users?)

From: Pat Finnegan <>
Date: Sun Jan 6 09:39:50 2002

On Fri, 4 Jan 2002, Fred Cisin (XenoSoft) wrote:

> Several of the newer variants of the 765, such as the 37C65, handle the
> switch betwen FM and MFM entirely in software. Those will do FM/SD.
> Almost any controller card that uses one of those chips can do FM/SD.

OK, With all this talk of drive controllers, I've got two questions that
I've had little luck finding answers to:

1) Are there any IC's available today that will do MFM and
write-precompensation, but very little else? Basically it'll need to do
the MFM, have a PLL for decoding the MFM, some sort of 'start read' and
'start write' inputs I can trigger from a sector pulse, and a
write-precomp. Another question: Is write-precomp that important?

2) Where can I get one?

I'd prefer to have a 1, 2, or 3 chip solution to that at max, with a
minimum of components. If you're wondering what I'm doing, I'm trying to
put together an interface board that'll let you hook your RL02 up to a
peecee (and a linux driver... hey I don't have experience in writing for
other OS's).

-- Pat
Received on Sun Jan 06 2002 - 09:39:50 GMT

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