On 7 Sep 1996, Michael Graff wrote:

> Date: 07 Sep 1996 15:21:07 -0400
> From: Michael Graff <explorer@flame.org>
> To: Rahim Azizarab <ray@tezcat.com>
> Cc: Jack Patton <jpatton@intserv.com>, Sean Berry <spberry@iastate.edu>,
>     port-i386@NetBSD.ORG
> Subject: Re: Jaz/Zip drives (was Re: new 1.2BETA /i386 install floppies and kernels)
> 
> Rahim Azizarab <ray@tezcat.com> writes:
> 
> > Well, I am finding out that it is not yet, but It is not terribly difficult
> > to patch a driver togather from the existing code.  You would open io port
> > 378h.  The rest is more or less like the scsi driver.
> 
> While this is a simplistic view, it is also mostly true.
> 
> >From what I understand, all ZIP drives are scsi internally, with the
> parallel ones having an adapter to convert signals and such.
> 
> --Michael
> 
Yes, One needs to keep in mind also that a parallel port transfers data
8 bit at a time also.

The patch to the Bios doesn't seem to be too difficult either, but there
is some copyright issues to be concerned with.  I have been thinking 
about writting an assembler routine that would dump memory locations
0x00000000 thru 0x0004ffff into a file, and then trying to disassemble
this file and patching it to boot from port 378h.

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