Subject: Re: 82072
To: None <email@example.com, port-sparc@NetBSD.ORG>
From: Chris Torek <firstname.lastname@example.org>
Date: 02/04/1995 09:32:41
I have a driver, but it is for BSD/OS. :-) (It needs some more work
before it is ready for prime time... it reads and writes but I am
sure formatting will fail. It is also not tested on the 82077.)
>Specificly, has anyone information on:
> - how to turn a drive's motor on
It is magic, it turns on when you do an operation and turns off
again by itself.
> - how to configure the device FIFO buffer (for PIO)
Just as on the 82077, I believe. I did get a magic byte of 0x64
for configuration paramater 0 (the `motor config') which I have yet
to figure out what it means.
You will need a trap-window interrupt handler. I wrote mine in C
initially and it was way too slow; I always got fifo overruns.
> - how to set implied seek (if this is at all useful; the
> 82077 seems to have it)
Dunno, I do explicit seeks.