linux on a tp750 update

[Keith Moore <moore@CS.UTK.EDU>]

For those of you who are interested in Linux on a 750
(or are just interested in tp750 quirks...)

I finally got the floppy drive to work under Linux.  Apparently
the disk change bit on the floppy controller chip is opposite
to what it would normally be on an AT disk controller.  Once I
figured this out, all I had to do was to change the sense of all
of the comparisons for this bit in the floppy driver and it worked.

Pretty soon I'll put make a linux-on-tp750 boot image for anon ftp.

Unfortunately, the networking code in Linux leaves a lot to be desired.
Our local net is such a swamp that the Linux code barely works.
So now that I know about the quirks of the floppy drive, I'm going
to try to get NetBSD running on the thing.

Stay tuned...

Keith