🚀 go-pugleaf

In article <C0Ez6A.LDE@dweomer.org>, brian@dweomer.org (Brian Taylor)
writes:
|> I'm interested in ordering the GNU CD-ROM that was just released, but
|> due to some articles in comp.sys.mips a while ago, I'm concerned that
|> my system (a MIPS MAGNUM 4000-PC50 running RISCos 5.0B) couldn't deal
|> with the format. Specifically, I read somewhere that the CD-ROM that
|> came with some (all?) MIPs systems is only for distributing their own
|> media and almost useless for other things.
Yup, unfortunate, but true.  ISO 9660 was "on the list" as a possible
future effort.  There is 9660 support in a CD-ROM kit marketed by what
was our specials group (I lost track of the names at the last reorg;-).
It's kinda expensive, though.
|> 
|> Can anyone confirm or deny this? Also, if anyone has any information
|> on incorporating an ISO-9660 filesystem into my kernel, that would also
|> be most appreciated (thus the Xpost to alt.cd-rom)!
MONDO HARD!  Incorporating file systems is not for the faint of heart!
You'd need a source license to begin with (yes, I guess it's theoretically
possible to do it without one, as the vnode interface is pretty standard).
This is a pretty major undertaking, probably a couple of person months
to get anything worth using.

The way SGI does it for IRIX is via an external daemon, I believe.  If
you have access to one of the IRIX systems, you could copy the stuff over.

|> 
|> Thank you kindly,
|> 
|> Brian
|> -- 
|> Brian Taylor				UUCP:		uunet.ca!dweomer!brian
|> 62 Derry Street				Internet:	brian@dweomer.org
|> Guelph, Ontario, CANADA			Voice:		(519) 824-0884
|> N1E 2C1
Sorry not to be more postitive,
Jay McCauley
RISC/os Raconteur and General Wet Blanket

 I would like to know what SCSI controllers can drive the apple sc+ cd-rom
drive, preferrably a decent controller (16-bit) which is also suitable for
external SCSI hard drives, and that has drivers for a variety of SCSI cd-rom
drives.

Please respond by e-mail
If there is interest, I will post responses

Mike
gilem@rpi.edu

In article <1993Jan6.184715.14693@odin.corp.sgi.com> mccauley@phaeton.asd.sgi.com (Jay McCauley) writes:
>In article <C0Ez6A.LDE@dweomer.org>, brian@dweomer.org (Brian Taylor)
>writes:
>|> I'm interested in ordering the GNU CD-ROM that was just released, but
>|> due to some articles in comp.sys.mips a while ago, I'm concerned that
>|> my system (a MIPS MAGNUM 4000-PC50 running RISCos 5.0B) couldn't deal
>|> with the format. Specifically, I read somewhere that the CD-ROM that
>|> came with some (all?) MIPs systems is only for distributing their own
>|> media and almost useless for other things.
>Yup, unfortunate, but true.  ISO 9660 was "on the list" as a possible
>future effort.  There is 9660 support in a CD-ROM kit marketed by what
>was our specials group (I lost track of the names at the last reorg;-).
>It's kinda expensive, though.
>|> 
>|> Can anyone confirm or deny this? Also, if anyone has any information
>|> on incorporating an ISO-9660 filesystem into my kernel, that would also
>|> be most appreciated (thus the Xpost to alt.cd-rom)!
>MONDO HARD!  Incorporating file systems is not for the faint of heart!
>You'd need a source license to begin with (yes, I guess it's theoretically
>possible to do it without one, as the vnode interface is pretty standard).
>This is a pretty major undertaking, probably a couple of person months
>to get anything worth using.
>
>The way SGI does it for IRIX is via an external daemon, I believe.  If
>you have access to one of the IRIX systems, you could copy the stuff over.
>

     Note that Linux for 386/486 systems supports CD-ROM ISO 9660 format.
     And the source is available (under the GPL, of course).
-- 
Al - aclark@netcom.com - My opinions are my own.

In article <C0Ez6A.LDE@dweomer.org>, brian@dweomer.org (Brian Taylor) writes:
> I'm interested in ordering the GNU CD-ROM that was just released, but
> due to some articles in comp.sys.mips a while ago, I'm concerned that
> my system (a MIPS MAGNUM 4000-PC50 running RISCos 5.0B) couldn't deal
> with the format. Specifically, I read somewhere that the CD-ROM that
> came with some (all?) MIPs systems is only for distributing their own
> media and almost useless for other things.
> 
> Can anyone confirm or deny this? Also, if anyone has any information
> on incorporating an ISO-9660 filesystem into my kernel, that would also
> be most appreciated (thus the Xpost to alt.cd-rom)!
> 
> Thank you kindly,
> 
> Brian
> -- 
> Brian Taylor			UUCP:		uunet.ca!dweomer!brian
> 62 Derry Street		Internet:	brian@dweomer.org
> Guelph, Ontario, CANADA	Voice:		(519) 824-0884
> N1E 2C1


Well, it is true that RISC/os doesn't support ISO-9660 as Jay MaCauley
indicated, but one possibility is to run your system under NT.  The 
MAGNUM 4000-PC50 is supported on the NT CD-ROM and will read 
ISO-9660 format just fine.  NT also supports most of the standard 
TCP/IP stuff so you could bring your system up in NT and rcp the stuff to 
another machine talking TCP/IP.

The only cost here is a $69 CD from Microsoft (and some time and disk
reorg).  This assumes you have the conversion disk to convert the PROM 
to NT of course.

-- 
Gregory B. Shippen
Silicon Graphics Inc./MIPS Technology Inc.			gbs@mti.sgi.com
2011 N. Shoreline Blvd. M/S 10L-175                      
Mountain View, CA  94039 (415) 390-4483

In article <C0Ez6A.LDE@dweomer.org>, brian@dweomer.org (Brian Taylor) writes:
> I'm interested in ordering the GNU CD-ROM that was just released, but
> due to some articles in comp.sys.mips a while ago, I'm concerned that
> my system (a MIPS MAGNUM 4000-PC50 running RISCos 5.0B) couldn't deal
> with the format. Specifically, I read somewhere that the CD-ROM that
> came with some (all?) MIPs systems is only for distributing their own
> media and almost useless for other things.
> 
> Can anyone confirm or deny this? Also, if anyone has any information
> on incorporating an ISO-9660 filesystem into my kernel, that would also
> be most appreciated (thus the Xpost to alt.cd-rom)!
> 
> Thank you kindly,
> 
> Brian
> -- 
> Brian Taylor			UUCP:		uunet.ca!dweomer!brian
> 62 Derry Street		Internet:	brian@dweomer.org
> Guelph, Ontario, CANADA	Voice:		(519) 824-0884
> N1E 2C1

MIPS made an effort to support ISO-9660 format cdroms with an IPG product
(IP6047) which used a Sony CDU-6211 drive, a modified common_scsi.o to
support cdrom drives on the SCSI bus and appropriate device nodes etc.

This product worked just fine with RISCos 4.52, allowing the host computer
to access ISO-9660 (and Rockridge format) cdroms. You could also export the
cdrom to other MIPS systems. There was only one problem with the product,
it mounted the local drive foreign, so that it couldn't be exported using
NFS, but had to use PFS. While PFS is relatively much more efficient than NFS
in terms of read speed etc, it meant that only other MIPS systems configured to
use PFS could access the cdrom.

I believe that the inclusion of PFS support in RISCos 5.0 would supply at
least part of the answer w.r.t. cdroms on MIPS machines. I don't know if
the ISO-9660/PFS support is available as yet. Ask SGI/MIPS.

----------------------------------------------

Ulrich Mack
Comperex Systems
rick@cxbne.cx.oz.au