Messages in this thread |  | | Date | Thu, 6 Feb 1997 21:27:55 +0100 | From | Gerd Knorr <> | Subject | Re: CD Jukeboxes |
| |
In article <Pine.WNT.3.95.970206084220.105B-100000@hw00046.cypres.nl>, you wrote: > >(Sidetrack) - Has it ever been considered to bring IDE ans SCSI under the >same driver model ? That could save a lot of maintenance. Drives could be >mapped to ID's and Changers could be mapped to LUN's. The 32bit windows >versions work this way, and it appears to work fine.
Both IDE and SCSI cdrom drivers use the generic cdrom driver, that's all. I don't think it is useful (or even possible) to have some common changer code for IDE and SCSI, becauce there is one important difference:
- SCSI changers do the changer stuff completely in _hardware_. From kernel's point of view, there is no difference between a 6x changer and 6 single cdrom drives (except that 6 single drives are faster...). - IDE changers are different: the kernel sees one cdrom drive which has some extra commands for changing CD's. The IDE driver would have to do all the changer stuff in _software_, if he wants present a 3x changer with one device for each slot. Not impossible, but this is'nt a 5-min-hack...
Gerd
-- l-w--w--w- 1 kraxel users 42 Jan 1 19:70 .signature <- /dev/null
|  |