From: eric@tantalus.nrl.navy.mil (Eric Youngdale) Subject: Re: Mitsumi CDROM support Date: Sat, 21 Nov 1992 19:48:16 GMT
In article <By0xMF.1rr@mentor.cc.purdue.edu> wilker@hopf.math.purdue.edu (Clarence Wilkerson) writes:
>IT does not look like much of a bus to me. It looks pretty much, judging from
>the chips involved, like a parallel port cobbled together from 74LSXXX
>chips. I think it just decodes a few addresses and passes data on to the
>smarts at the drive end. Does anyone have docs on the MSCDEX interface to
>low level hardware sys driver for DOS? This might help in dis-assembling
>the supplied driver.
I was at a computer flea market this afternoon, and a dealer swore up
and down that it was an IDE interface of some kind. He claimed that you just
use the secondary IDE address, and treat it like a normal disk drive. He also
said that you cannot plug the Mitsumi into a regular IDE board, but you have to
use the board that it comes with, which implies that it is not plug compatible
with an IDE disk.
This all sounds like someone would need to try and hack the kernel so
that it looks at the secondary IDE address. Once you have that working, I
think you could just "mount -t iso9660 /dev/hdc /mnt" and you should be all
set.
For what it is worth, aI saw a NEC 83 scsi cdrom drive going for 300$
this afternoon. The dual speed drives are still more expensive, but might
prove worth it if people want to use the cdrom heavily.
-Eric
-- Eric Youngdale