On 11/02/2011 07:05 PM, Thomas Schmitt wrote:
> The page length is indeed 18 for IDE and 20 for SCSI. I made some changes
> to that page recently, but left the 18 because I feared causing regression.
> But if that is a bug, we can probably fix it in 1.0.
This riddles me.
In hw/scsi-disk.c:mode_sense_page() i see that the page 0x2A
(now MODE_PAGE_CAPABILITIES) gets filled with 22 bytes, compliant
to MMC-1. (Later MMCs have longer minimum sizes.)
Ok, in your counting I should have written 20 for IDE (0x12 + page
number + page size) and 22 for SCSI (0x14 + page number + page size).
But libburn receives only 20 of them, because the Page Length
is reported as 0x12 in the 10th byte of the reply:
MODE SENSE
5a 00 2a 00 00 00 00 00 1c 00
From drive: 28b
00 22 70 00 00 00 00 00 2a 12 00 00 71 60 29 00 02 c2 00 02
02 00 02 c2 00 00 00 00
Nevertheless i see in hw/scsi-disk.c
p[1] = 0x14;
So how is this altered to 0x12 in the further course of processing ?
Because you're using an *IDE* (ATAPI) CD-ROM, not SCSI. See hw/ide/atapi.c.
Paolo
