Changeset 128 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Boot/BootSector.asm

Timestamp:

Mar 4, 2011, 1:47:17 PM (14 years ago)

Author:

krille_n_@…

google:author:

krille_n_@hotmail.com

Message:

Changes to the XTIDE Universal BIOS:

• Size optimizations in various files.

File:

• trunk/XTIDE_Universal_BIOS/Src/Boot/BootSector.asm (modified) (2 diffs)

trunk/XTIDE_Universal_BIOS/Src/Boot/BootSector.asm

@@ -23 +23 @@
     jc      SHORT .FailedToLoadFirstSector
 
-    test    dl, 80h
-    jz      SHORT .AlwaysBootFromFloppyDriveForBooterGames
+    test    dl, dl
+    jns     SHORT .AlwaysBootFromFloppyDriveForBooterGames
     cmp     WORD [es:bx+510], 0AA55h        ; Valid boot sector?
     jne     SHORT .FirstHardDiskSectorNotBootable
@@ -84 +84 @@
 .ResetBootDriveFromDL:
     xor     ax, ax                          ; AH=0h, Disk Controller Reset
-    test    dl, 80h                         ; Floppy drive?
-    eCMOVNZ ah, 0Dh                         ; AH=Dh, Reset Hard Disk (Alternate reset)
+    test    dl, dl                          ; Floppy drive?
+    jns     SHORT .SkipAltReset
+    mov     ah, 0Dh                         ; AH=Dh, Reset Hard Disk (Alternate reset)
+.SkipAltReset:
     int     INTV_DISK_FUNC
     ret