RE: Quadra 950 Floppy Drive
Howdy,
As I understand it the problem with writing a floppy driver is that the chip
was not designed for such things. So Woz did some awful hacks and wierd logic
in MacOS to make it use the chip as a floppy controller. So far no one has
been able to work out the magic.
Apple released the chip specs to someone, it might be the NetBSD-mac68k
people. If Apple still has the MacOS source code they aren't willing to have
someone hunt it down and release it, so there you go.
I check the 68k port archives for a couple of open source OS's every now and
then to see how things are developing, and it looks like the NetBSD people had
gotten a kernel to load into memory booting straight from a floppy, but they
weren't able to get it to boot because of whatever it is that MacOS does at
startup time, and because of space limitations it had to be heavily
compressed...
Looks like reverse-engineering is the only option again...
Lincoln
>===== Original Message From debian-68k@lists.debian.org =====
>On Thu, 27 Feb 2003, Ray Knight wrote:
>> Sorry I was warning against the use of the -A option for updating as
>> linux-2_2 is a branch and you'd end up with the HEAD which is 2.4 and
>> obsolete in that repository.
>>
>> For 2.2 code:
>> CVSROOT=:pserver:anonymous@cvs.sourceforge.net:/cvsroot/linux-mac68k
>>
>> According to the SourceForge page. And be sure to retrieve the
>> linux-2_2 branch. I don't use the CVSROOT environment as I'm always
>> using an existing working directory and I have write access to the
>> repository.
>>
>> For 2.4 source you'll want the following:
>>
>> CVSROOT=:pserver:anon@linux-m68k-cvs.apia.dhs.org:/home/linux-m68k/cvsroot
>>
>> Or see the page at http://linux-m68k-cvs.apia.dhs.org
>>
>> Hope this helps.
>>
>> Ray
>
>Thank you, Ray.
>
>I've checked out the linux-2_2 branch from
>cvs.sourceforge.net.
>But I found out that it contains exactly the same data as that from
>cvs.linux-mac68k.sourceforge.net.
>
>A nslookup told me that both servers are simply identical. ;-)
>
>I've also downloaded the pre-built 2.2.23 kernel from sourceforge.
>My experiences on the IIfx are that I can sometimes successfully eject the
floppy,
>sometimes the kernel crashes.
>
>Is there a point where I can start debugging?
>
>Kind regards,
>
> Carsten
>--
>Certify your minority, support spyware!
>Soon to come as TCPA and Palladium from Microsoft & Co.
>
>
>--
>To UNSUBSCRIBE, email to debian-68k-request@lists.debian.org
>with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org
Lincoln Rutledge
Information Technology Manager
Fairfield County District Library
Reply to: