vax, cdroms, etc

From: Pete Turnbull <>
Date: Wed Mar 10 20:00:01 1999

On Mar 10, 19:27, R. Stricklin (kjaeros) wrote:
> On Wed, 10 Mar 1999, Pete Turnbull wrote:
> > That means that only a few CD-ROM drives will be bootable, such as
> > 3301, 3401, and a few old Sony drives -- and all of those will need to
> > set up correctly. On the Toshibas, that means a minor internal
> > modification, unless you get one that was previously used on a Vax,
> > Sparcstation, or SGI.

> Almost any Plextor CD-ROM drive will have a jumper that will enable it to
> be used on a host expecting 512k blocks.

I'd forgotten about the Plextors.

> I understand that many newer Toshiba CD-ROMs will also work equally well
> with 512k or 2048k blocks. As far as I'm aware, of the older Toshiba
> CD-ROM drives only the 3201B (3401B? I forget) is modifiable.

All the newer Toshibas -- and most other SCSI-2 CD-ROMs -- will accept the
appropriate MODE SELECT command. The 3201, 3301, and 3401 all have
internal jumper pads to hardwire the block size. I think the 5401 does as
well. The 3601 and later don't (the pads are there, but they don't set the
block size).

Pete						Peter Turnbull
						Dept. of Computer Science
						University of York
Received on Wed Mar 10 1999 - 20:00:01 GMT

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