Changeset 243 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Initialization/Initialize.asm

Timestamp:

Feb 10, 2012, 2:00:50 PM (12 years ago)

Author:

aitotat@…

google:author:

aitotat@gmail.com

Message:

Changes to XTIDE Universal BIOS:

• Brought back optional "A then C" boot loader.
• Now there is only one INT 19h handler that remains unchanged.

File:

• trunk/XTIDE_Universal_BIOS/Src/Initialization/Initialize.asm (modified) (3 diffs)

trunk/XTIDE_Universal_BIOS/Src/Initialization/Initialize.asm

@@ -30 +30 @@
     ; Install INT 19h handler (boot loader) where drives are detected
     mov     bx, BIOS_BOOT_LOADER_INTERRUPT_19h
-    mov     si, HandlerForLateInitialization
+    mov     si, Int19h_BootLoaderHandler
     call    Interrupts_InstallHandlerToVectorInBXFromCSSI
 
@@ -39 +39 @@
     popf
     retf
-
-
-;--------------------------------------------------------------------
-; HandlerForLateInitialization
-;   Parameters:
-;       Nothing
-;   Returns:
-;       Never returns
-;--------------------------------------------------------------------
-HandlerForLateInitialization:
-    LOAD_BDA_SEGMENT_TO es, ax
-    call    Initialize_AndDetectDrives      ; Installs new boot menu loader
-    int     BIOS_BOOT_LOADER_INTERRUPT_19h  ; Display boot menu
 
 
@@ -103 +90 @@
 ;   Parameters:
 ;       DS:     RAMVARS segment
+;       ES:     BDA and interrupt vector segment (zero)
 ;   Returns:
 ;       Nothing
 ;   Corrupts registers:
-;       All
+;       All, except DS and ES
 ;--------------------------------------------------------------------
 .ResetDetectedDrives: