*BSD News Article 89118


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From: j@uriah.heep.sax.de (J Wunsch)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: CD writer software?
Date: 11 Feb 1997 02:07:28 GMT
Organization: Private BSD site, Dresden
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phtlb@zeus.bris.ac.uk (Tim) wrote:

> Will there be support for any other CD-R in the near future, and does 
> anyone have any reccomendations for recorders?

Not unless people implement it.  Get me right, i've got a CD-R device,
and won't likely buy a new one just to get better support for another
drive. :-)

Sure, if people contribute, i'll integrate it (and help them
contributing).  The Yamaha shouldn't be very difficult either.

> In the UK recorders are still fairly expensive with the exception of the 
> Ricoh 1420 and Pilips CD2000 (if you can find one). I would love to see 
> support for the Ricoh as this drive is currently selling very cheaply and 
> comes with a 2Mb cache which supposedly helps keep up a constant stream 
> of data.

I don't have the slightest clue about the Ricoh, but IIRC this one has
a ``more weird'' protocol to follow, so it's perhaps the only CD-R
device currently known that wouldn't fit quite right into the design
of the worm(4) driver.  (My remembrance might be faulty however.)

> Will there be any problems running such a drive from an adaptec 1505 (no 
> DMA, aic driver)?

It's a poor choice, not so much for it sitting on an ISA bus (you
could use even an aged AHA-1540A or B successfully), but rather since
it's a PIO-mode only controller.  I can't tell you whether it works,
but i simply wouldn't use such a thing at all.  The CPU load is
probably worse than with an IDE disk.

> finally is there going to be a CD-R driver that can write in mode 2 format? 
> I have no idea what this means ...

Neither do i, offhand.  I think it's not very difficult to put the
drive into that mode, and adding a hook to the driver.  (I'll have to
look at the specs for my burner for how to do this.)

ISTR that it's just some `raw' data form, without ECC bytes etc,
probably something that could be used for video data.

> the disk, I don't even know whether a mode 2 disk can be read by FreeBSD.

It's probably best to ask the people on the freebsd-multimedia list
for this kind of questions.

-- 
cheers, J"org

joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)