Changeset 61 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Handlers/Int19h.asm

Timestamp:

Nov 28, 2010, 3:45:50 AM (13 years ago)

Author:

aitotat

google:author:

aitotat

Message:

Changes to XTIDE Universal BIOS:

• AA55h signature no longer required when booting from floppy drives. This should make booter games work.

File:

• trunk/XTIDE_Universal_BIOS/Src/Handlers/Int19h.asm (modified) (3 diffs)

trunk/XTIDE_Universal_BIOS/Src/Handlers/Int19h.asm

@@ -2 +2 @@
 ; Project name  :   IDE BIOS
 ; Created date  :   3.8.2007
-; Last update   :   1.8.2010
+; Last update   :   28.11.2010
 ; Author        :   Tomi Tilli
 ; Description   :   Int 19h BIOS functions (Boot Strap Loader).
@@ -74 +74 @@
     call    Int19h_LoadFirstSectorFromDL
     jc      SHORT .FailedToLoadFirstSector
+
+    test    dl, 80h
+    jz      SHORT .AlwaysBootFromFloppyDriveForBooterGames
     cmp     WORD [es:bx+510], 0AA55h        ; Valid boot sector?
-    jne     SHORT .FirstSectorNotBootable
+    jne     SHORT .FirstHardDiskSectorNotBootable
+.AlwaysBootFromFloppyDriveForBooterGames:
     call    BootPrint_BootSectorLoaded
     stc
@@ -83 +87 @@
     clc
     ret
-.FirstSectorNotBootable:
+.FirstHardDiskSectorNotBootable:
     call    BootPrint_FirstSectorNotBootable
     clc