Changeset 23 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Initialization/Initialize.asm

Timestamp:

Jul 1, 2010, 5:33:40 PM (14 years ago)

Author:

aitotat

google:author:

aitotat

Message:

Booting is now possible from hard disks if floppy controller reset fails.
AH=00h, Disk Controller Reset now returns error code for the requested drive only.

File:

• trunk/XTIDE_Universal_BIOS/Src/Initialization/Initialize.asm (modified) (2 diffs)

trunk/XTIDE_Universal_BIOS/Src/Initialization/Initialize.asm

@@ -2 +2 @@
 ; Project name  :   IDE BIOS
 ; Created date  :   23.3.2010
-; Last update   :   2.5.2010
+; Last update   :   1.7.2010
 ; Author        :   Tomi Tilli
 ; Description   :   Functions for initializing the BIOS.
@@ -418 +418 @@
 ALIGN JUMP_ALIGN
 Initialize_ResetDetectedDrives:
-    ; Initialize to speed up POST. DOS will reset drives anyway.
-    eMOVZX  cx, BYTE [RAMVARS.bDrvCnt]
-    jcxz    .Return
-    mov     dl, [RAMVARS.bFirstDrv]
-ALIGN JUMP_ALIGN
-.InitLoop:
-    call    AH9h_InitializeDriveForUse
-    inc     dx                  ; Next drive
-    loop    .InitLoop
-.Return:
-    ret
+    xor     ah, ah              ; Disk Controller Reset
+    mov     dl, 80h             ; Reset all floppy drives and hard disks
+    int     INTV_DISK_FUNC
+    ret