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| author | Kenneth J. Davis <jeremyd@fdos.org> | 2012-10-22 19:20:18 +0100 |
|---|---|---|
| committer | Matt Fleming <matt.fleming@intel.com> | 2012-10-23 10:53:17 +0100 |
| commit | 7307d60063ee4303da4de45f9d984fdc8df92146 (patch) | |
| tree | 958481a333d072c69a3031a56411d2cdc9954943 | |
| parent | 8d6e004fbd63213a7d2b4cd97641585f5481c8a8 (diff) | |
| download | syslinux-7307d60063ee4303da4de45f9d984fdc8df92146.tar.gz syslinux-7307d60063ee4303da4de45f9d984fdc8df92146.tar.xz syslinux-7307d60063ee4303da4de45f9d984fdc8df92146.zip | |
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>
| -rw-r--r-- | memdisk/mstructs.h | 4 |
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 */ |