Linux on PowerMac with Dos Compatibility Card ??

Linux on PowerMac with Dos Compatibility Card ??

Post by Dave Pla » Thu, 14 Dec 1995 04:00:00



Quote:>Has anyone any experience of running Linux on a PowerMac with Apple's Dos
>Compatibility Card fitted ?

>Might it work or is it just a "bad idea"

The answer for the Power Mac DOS cards, and for the Orange Micro cards,
seems to be "This would be very difficult, and at present it is
impossible."

The problem is this: all of these cards provide some of their services
(disk access, keyboard, mouse, display, etc.) using customized PC
BIOSes, which trap the usual BIOS calls and bounce the requests and
parameters over the Nubus/PCI-bus to a program running on the main
Macintosh CPU under MacOS.  This server-program then performs the
necessary I/O.

Linux does not use the PC BIOS - its drivers are designed to access the
PC hardware directly.  Alas, a "PC" card on a Macintosh usually doesn't
_have_ the hardware that the Linux driver expects to work with.

Linux doesn't have drivers which use the PC BIOS (although, in
principle, it probably could - but they'd be slow and clunky).  Nor does
it have drivers which can use the PC-to-Macintosh-server communication
protocol - in large part because this protocol is undocumented (and
reps from Orange Micro to whom I've spoken have expressed doubts as to
whether their company would be willing to document its particular
protocol).

Hence - you can probably arrange to boot a Linux kernel on one of these
cards, but it won't be able to talk to any of the Mac-based peripherals,
and will be pretty much useless.
--

      USNAIL: The 3DO Company, Systems Software group
              600 Galveston Drive
              Redwood City, CA  94063

 
 
 

Linux on PowerMac with Dos Compatibility Card ??

Post by Gideon Amo » Thu, 14 Dec 1995 04:00:00


Has anyone any experience of running Linux on a PowerMac with Apple's Dos
Compatibility Card fitted ?

Might it work or is it just a "bad idea"

Gideon

 
 
 

Linux on PowerMac with Dos Compatibility Card ??

Post by F. Brett Wei » Sat, 16 Dec 1995 04:00:00




> Has anyone any experience of running Linux on a PowerMac with Apple's Dos
> Compatibility Card fitted ?

> Might it work or is it just a "bad idea"

> Gideon

Bad idea. The BIOS will barely run Windows 95, which is supposed to be
nice. We all know it ain't, but let's face it, Linux under any kernel is
nastier than that.

Basically, Apple decided that the DOS card (really built by Reply) is
designed for the guy who needs to run Microsoft word once a week. It's a
great solution, but doesn't really do much for the guy who wants both. My
advice--get a used 6100 or Quadra, run Apple stuff on that, and build
yourself a nice PC for cheap to run linux. With Apple Internet Router, you
might even be able to get them to talk.

Might :).

You can also run UNIX from Tenon Intersystems' MachTen, although it's not
widely used, judging by the number of posts in the newsgroup. Check out
comp.unix.machten for more info.

Brett
Info X Inc.
Macintosh Specialists

 
 
 

Linux on PowerMac with Dos Compatibility Card ??

Post by David Wilkins » Mon, 18 Dec 1995 04:00:00




>Has anyone any experience of running Linux on a PowerMac with Apple's Dos
>Compatibility Card fitted ?

>Might it work or is it just a "bad idea"

>Gideon

Hi
I already tried it out on my performa 630 with dos card but it didn't work.
Because it looks for a bios and it seems like that the dos card doesn't
have any... I was then booting from a diskette I made on my 386DX40.. Maybe
there is a utility to get Linux working on a mac?? if you ever hear of any
please let me know...

David

 
 
 

1. LINUX on a 486-DX / DOS card in a PowerMac 7500?

Is it possible (and if so, recommended) to install and run LINUX on a
"DOS card" (ie: 486/DX4 card from Orange Micro or Apple or anybody)
that is in a PowerMac 7500?

I would really like to start getting my hands dirty with LINUX, but
don't have the money to get a PC box on top of the new mac I'm getting
in the next month or so.  I plan on getting either a PowerMac 7500
with 24MB RAM, at least a 1GB drive, and whatever is the best, fastest
DOS card that can (if possible) run LINUX - I'd also get a separate HD
for the DOS (LINUX) card.

Any experience, advice, or insight?  Thanks in advance.

Adam Klein
--
Adam Klein

Finger for PGP2.6.2 public key                         <will cogitate for food>

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