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authorKenneth J. Davis <jeremyd@fdos.org>2012-10-22 19:20:18 +0100
committerMatt Fleming <matt.fleming@intel.com>2012-10-23 10:53:17 +0100
commit7307d60063ee4303da4de45f9d984fdc8df92146 (patch)
tree958481a333d072c69a3031a56411d2cdc9954943 /memdisk/mstructs.h
parent8d6e004fbd63213a7d2b4cd97641585f5481c8a8 (diff)
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memdisk: Fix order of sectors/track and bytes/sectorsyslinux-4.06
Swap order of sectors/track with bytes/sector to match diskette parameter table order (as pointed to by INT 1Eh). References: (additional ones available if necessary) 'System BIOS for IBM PC/XT/AT computers and compatibles' by Phoenix Technologies Ltd. copyright 1987,88,89 3rd printing 1990 ISBN: 0-201-51806-6 pages 61-62 'PC Interrupts' 2nd edition by Ralf Brown & Jim Kyle copyright 1994 1st printing 1993 ISBN: 0-201-62485-0 page 211 Note: this fixes an issue with older FreeDOS kernels that expect this structure to contain valid values. Signed-off-by: Kenneth J. Davis <jeremyd@fdos.org> Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Diffstat (limited to 'memdisk/mstructs.h')
-rw-r--r--memdisk/mstructs.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/memdisk/mstructs.h b/memdisk/mstructs.h
index fecbff40..0b0dc07d 100644
--- a/memdisk/mstructs.h
+++ b/memdisk/mstructs.h
@@ -121,9 +121,9 @@ typedef union {
uint8_t specify1; /* "First specify byte" */
uint8_t specify2; /* "Second specify byte" */
uint8_t delay; /* Delay until motor turn off */
- uint8_t sectors; /* Sectors/track */
-
uint8_t bps; /* Bytes/sector (02h = 512) */
+
+ uint8_t sectors; /* Sectors/track */
uint8_t isgap; /* Length of intersector gap */
uint8_t dlen; /* Data length (0FFh) */
uint8_t fgap; /* Formatting gap */