qemu-devel
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Qemu-devel] [PATCH 02/10] ide: split away ide-internal.h


From: Natalia Portillo
Subject: Re: [Qemu-devel] [PATCH 02/10] ide: split away ide-internal.h
Date: Fri, 21 Aug 2009 00:40:03 +0100

Maximum CD size is not 80 minutes.
Real firmwares of players are usually limited to 99 minutes 59 seconds 75 frames, or unlimited.
I don't see the sense for this line.
Also why is the sector size fixed to 2048 when CDs can be of 2336 or 2352 (data, without CRCs) bytes?

+/* Some generally useful CD-ROM information */
+#define CD_MINS                       80 /* max. minutes per CD */
+#define CD_SECS                       60 /* seconds per minute */
+#define CD_FRAMES                     75 /* frames per second */
+#define CD_FRAMESIZE 2048 /* bytes per frame, "cooked" mode */ +#define CD_MAX_BYTES (CD_MINS * CD_SECS * CD_FRAMES * CD_FRAMESIZE)
+#define CD_MAX_SECTORS     (CD_MAX_BYTES / 512)





reply via email to

[Prev in Thread] Current Thread [Next in Thread]