Changeset 249 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Handlers/Int19h.asm

Timestamp:

Feb 16, 2012, 1:56:36 PM (13 years ago)

Author:

aitotat@…

google:author:

aitotat@gmail.com

Message:

Changes to XTIDE Universal BIOS:

• Number of successfully transferred sectors is now returned by all transfer functions (instead of requested sector count).
• Added INT 19h handler for proper reboot.

File:

• trunk/XTIDE_Universal_BIOS/Src/Handlers/Int19h.asm (modified) (2 diffs)

trunk/XTIDE_Universal_BIOS/Src/Handlers/Int19h.asm

@@ -4 +4 @@
 ; Section containing code
 SECTION .text
+
+;--------------------------------------------------------------------
+; INT 19h handler that properly reboots the computer when
+; INT 19h is called.
+;
+; Int19h_ResetHandler
+;   Parameters:
+;       Nothing
+;   Returns:
+;       Never returns (reboots computer)
+;--------------------------------------------------------------------
+Int19h_ResetHandler:
+    mov     ax, BOOT_FLAG_WARM              ; Skip memory tests
+    jmp     Reboot_ComputerWithBootFlagInAX
+
 
 ;--------------------------------------------------------------------
@@ -125 +140 @@
     push    cx          ; sgment address for MBR
     push    bx          ; offset address for MBR
+    mov     bx, BIOS_BOOT_LOADER_INTERRUPT_19h  ; INT 19h interrupt vector offset
+    mov     si, Int19h_ResetHandler             ; INT 19h handler to reboot the system
+    call    Interrupts_InstallHandlerToVectorInBXFromCSSI
     retf                ; NOTE: DL is set to the drive number