>From [EMAIL PROTECTED] Sat May 19 18:11:11 2001
>> It is hard to check for the SCSI subsystem size on Linux. On Solaris
>> it is 30 kB for the SCSI glue layer and about 40 kB for a host adapter
>> driver. Less than 100 kB of code is no argument for a system with > 64MB
>> of memory. As most systems installed in this year have 512 MB of memory
>> it is becoming a joke to use this argument.
>I dont follow what you are talking about
Yor and Mike's argument was that it does not make sense to include SCSI in
the kernel and I am tryin to show that the size of a SCSI subsystem does not
matter these days.
>> Or is the real reason that there are known bugs in the SCSI system on Linux
>> and you like to avoid to include buggy parts if possible?
>I dont understand that question either
Well ide-scsi + the SCSI cdrom driver does not work for me with a PCATA
CD-writer - not even for reading.
>> So you don't care to get the right solution because you don't understand it.
>> Please give me a real argument for keeping ide-cdrom in current kernels!
>a) It works
But it does not work at all for writers.
>b) It is smaller than scsi layers
If you need to include two CD-rom drivers instead of one, your favorite
solution is even bigger. This is the case if you have a mixed SCSI/ATAPI
system.
One other important argument is that you need to maintain two independant
CD-ROM drivers. The result is known: ide-cdrom has other bugs than
the SCSI cdrom driver...
>c) Some early drives dont have the necessary packet commands
You are talking about pre 1993 drives. Do you know anybody who is still
using a 1x or 2x CD-ROM drive from these days?
For those rare people, it is more probable that they know how to
configure the outdated ide-cdrom method while most people who are
using ATAPI cd writers it is hard to understand how to make them
work.
>> About half a year ago, I asked Alan whether he believes if it is possible
>> to open or close the tray of a CD-ROm drive by only using IDE commands.
>> As he answered with 'yes', there is a proove that he does not know
>> how ATAPI works.
>You issue a read the CD will close the draw if it is open. Similarly you control
>the door with commands 0xDE and 0xDF. Its quite possible you can't auto open
>it that way.
ANd you can't do any audio without SCSI packet commands....
>> There is a IDE command called 'packet' which is used to send SCSI commands
>> to the drive using IDE as a transport only.
>For the drives that have it - which is most but not all
All drives build after 1993. see above.
>> - Linux does not support PCATA with DMA
>> - Linux crashes or gives funny messages when trying to put ide-scsi on top
>> of the PCATA transport.
>Take it up with the IDE maintainer.
>"It has a bug" isnt at all related what should/should not be implemented.
OK, I'll try it but I thought that you as the integrative person may/should
issue some pressure to the developers to help Linux to evolve into a direction
that makes it easier to use for most people.
J�rg
EMail:[EMAIL PROTECTED] (home) J�rg Schilling D-13353 Berlin
[EMAIL PROTECTED] (uni) If you don't have iso-8859-1
[EMAIL PROTECTED] (work) chars I am J"org Schilling
URL: http://www.fokus.gmd.de/usr/schilling ftp://ftp.fokus.gmd.de/pub/unix
--
To UNSUBSCRIBE, email to [EMAIL PROTECTED]
with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
