[SeaBIOS] CD-ROM boot broken on current revision?

[fellaw at gmx.net]

Hi,

I'm a new subscriber to seabios.org. Not much exp. with mailing lists nor C++, so feel free to straighten me out as 
necessary. I found out an issue: Booting from CD-ROM doesn't work anymore, though related make options have been set. I 
tried to debug it a little bit. To me it looks that order changes related to media sensing/capacity request broke it up.

In 1.6.3,  cdb_read_capacity(line 204 in src/cdrom.c) takes place before cdb_get_sense(line 209) resulting in a break.

In current revision, this has been changed, has it?
cdrom_boot(src/cdrom.cline 188) calls scsi_is_ready(line 197), which looks similar to atapi_is_ready from 1.6.3/src/cdrom.c.

However: scsi_is_ready is missing

   struct cdbres_read_capacity info;
   ret = cdb_read_capacity(op, &info);
   if (!ret)
   // Success
   break;

contrary to 1.6.3. In line cdb_get_sense returns 0xC with a medium in the drive, but this seems to result into an 
endless loop due to continue;

For me, I added above snippet to blockcmd.c right before ret = cdb_get_sense(..) and it worked.
Later CD-ROM boots using boot managers(e.g. grub4dos or PloP) work fine without changes, though.

Debugging was done in Qemu 1.0.1. Since I'm on Windows, I used this build:
http://lassauge.free.fr/qemu/release/Qemu-1.0.1-windows.zip

Please confirm or advise.

Kind Regards,
fellaw