>From: [EMAIL PROTECTED] (Bill Davidsen)
>> > Without ide cdrom support the kernel must add support for an entire
>> >SCSI subsystem, which is totally not needed on most systems. I can't see
>> >making this a standard, most systems just don't need it.
>>
>> Well most systems now include CD-writers and you need a SCSI subsystem
>> to make them work.
> That may be true in your company, or country, or even continent, but
>it sure isn't true here. Some percentage of home systems have them (adds
>to the price and profit), but laptops (battery issues) and business
>systems (security and piracy issues) for the most part don't include CD
>burners. And in many businesses I see not everyone who has one,
>particularly non-technical managers, knows they have one.
At least, having ide cdrom in a system break the GNU rules which say:
make the best system without looking at RAM usage.
Do you know how much RAM you need for a SCSI subsystem?
On Solaris (sparc 32 bit) this is 30 kB !!! for the SCSI glue layer.
The rest is host adapter stuff and already inside ide cdrom.
Even a complete "real" hostadapter driver is 40 kB.
What is your problem with having this loaded on a > 64MB system
for correct layering of the ATAPI transport?
>> Did you ever try to write a CD on a Sony VAIO with a CDwriter connected
>> to the PCcard slot?
> No, just IDE and SCSI, in the combinations I listed in my original
>post. I didn't try PCMCIA, USB, firewire, parallel port, IR connect, or
>any of the other possible combinations, because I don't have or want
>them. I did test the combinations things that were supposed to not
>work, and determine that there is not a general problem, as in "this
>doesn't work at all."
PCATA CD-roms are very nice because they are just ATAPI on a ATA interface
from the PCCARD slot. This is fast and if the kernel would be correctl layered
there is only neeed for the PCCARD driver below the IDE transport stuff.
> The assumption that Linux can't do SCSI and ide-scsi and ATAPI at the
>same time does not seem to be correct in most cases. That's what I was
>testing, that's what I found, and people are welcome to draw any
>conclusions they like.
It seems that you missed that ATAPI _is_ IDE SCSI.
J�rg
EMail:[EMAIL PROTECTED] (home) J�rg Schilling D-13353 Berlin
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