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Make loader be able to load 1.2MB fd on machines w/ 1.44MB fdd.

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Sumbmitted by:	IMAI Takeshi <take-i@ceres.dti.ne.jp>
This commit is contained in:
KATO Takenori 1999-03-04 16:38:12 +00:00
parent 86d0f76681
commit 94709d1d93
1 changed files with 7 additions and 4 deletions
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11
sys/boot/pc98/libpc98/biosdisk.c
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@ -23,7 +23,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: biosdisk.c,v 1.1 1999/02/03 08:39:09 kato Exp $
* $Id: biosdisk.c,v 1.2 1999/03/04 10:48:14 kato Exp $
*/
/*
@ -182,9 +182,12 @@ bd_init(void)
if (bdinfo[nbdinfo].bd_flags & BD_FLOPPY){
bdinfo[nbdinfo].bd_drive = 'A' + (unit & 0xf);
if (*(u_char *)PTOV(0x5AE) & (1<<(unit & 0xf)))
/* available 1.44MB access */
bdinfo[nbdinfo].bd_unit = 0x30 + (unit & 0xf);
/* available 1.44MB access? */
if (*(u_char *)PTOV(0xA15AE) & (1<<(unit & 0xf))){
/* boot media 1.2MB FD? */
if ((*(u_char *)PTOV(0xA1584) & 0xf0) != 0x90)
bdinfo[nbdinfo].bd_unit = 0x30 + (unit & 0xf);
}
}
else
bdinfo[nbdinfo].bd_drive = 'C' + hd_drive++;