6 Mar
2003
6 Mar
'03
12:38 p.m.
----- Original Message -----
From: "Eric J. Korpela" <korpela(a)ssl.berkeley.edu>
To: <cctech(a)classiccmp.org>
Sent: Thursday, March 06, 2003 9:07 PM
Subject: Re: AMD or Intel 80387 Math Coprocessor IC
Sorry for the delayed response. I've used Linux,
OS/2 Warp and Win3.1 on
them.
Right now it's an OpenDOS machine.
Ok. I was mainly looking to see if it was only kind-of compatable, but it
sounds like any quirks are minor or non-intrusive.
Turning on internal cache requires ring 0 access. OS/2 required a device
driver
at
startup. Win 3.1 and DOS run a program from
autoexec.bat. ISTR that the
linux
kernel had support built in for the DRX. I don't
know about AIX and
Solaris.
Probably need a kernel patch to tweak the bits, same as linux. I wonder if
NetBSD supports the cache...
There are also later model BIOS versions that turn on the cache at boot.
I
don't know if the P70 would have that l turn on
the cache at boot. I
don't
know if a P70 would have an appropriate BIOS.
Probably not, but if my googling has been any indication, there are a goodly
number of drx/drx2 chips installed in P70s-- it's about the fastest chip you
can install without major hardware voodoo or adding a CPU card.
Eric
Bob