Changeset 90 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Handlers/Int19h.asm

Timestamp:

Jan 27, 2011, 11:31:31 AM (14 years ago)

Author:

Tomi Tilli

google:author:

aitotat

Message:

Changes to XTIDE Universal BIOS:

• Removed INT 13h format and diagnostics functions.
• Removed INT 18h callback handler.
• Removed configuration for early/late initialization. Now XT builds always use late and AT build early initialization.
• Reduced number of supported IDE controllers from 5 to 4.
• Removed reserved configuration bytes.
• Removed simple and system boot loaders.

File:

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

trunk/XTIDE_Universal_BIOS/Src/Handlers/Int19h.asm

@@ -1 @@
-; File name     :   Int19h.asm
-; Project name  :   IDE BIOS
-; Created date  :   3.8.2007
-; Last update   :   14.1.2011
-; Author        :   Tomi Tilli,
-;               :   Krister Nordvall (optimizations)
+; Project name  :   XTIDE Universal BIOS
 ; Description   :   Int 19h BIOS functions (Boot Strap Loader).
 
@@ -12 +7 @@
 B_READ_RETRY_TIMES  EQU 3   ; Number of times to retry
 
-
-;--------------------------------------------------------------------
-; Int 19h software interrupt handler for late initialization.
-; Calls actual Int 19h after initialization is complete.
-;
-; Int19h_LateInitialization
-;   Parameters:
-;       Nothing
-;   Returns:
-;       Never returns
-;--------------------------------------------------------------------
-ALIGN JUMP_ALIGN
-Int19h_LateInitialization:
-    call    Initialize_ShouldSkip           ; Skip initialization?
-    jc      SHORT .SkipInitialization
-    call    Initialize_AndDetectDrives
-    int     INTV_BOOTSTRAP                  ; Call actual boot loader
-.SkipInitialization:
-    call    RamVars_Initialize              ; RAMVARS must be initialized even for simple boot loader
-    ; Fall to Int19h_SimpleBootLoader
-
-;--------------------------------------------------------------------
-; Simple boot loader.
-; Boot sequence is fixed to 00h, 80h and INT 18h.
-;
-; Int19h_SimpleBootLoader
-;   Parameters:
-;       Nothing
-;   Returns:
-;       Never returns
-;--------------------------------------------------------------------
-ALIGN JUMP_ALIGN
-Int19h_SimpleBootLoader:
-    sti                                     ; Enable interrupts
-    call    RamVars_GetSegmentToDS
-    xor     dx, dx
-    call    Int19h_TryToLoadBootSectorFromDL
-    jc      SHORT Int19h_JumpToBootSector
-    mov     dl, 80h
-    call    Int19h_TryToLoadBootSectorFromDL
-    jc      SHORT Int19h_JumpToBootSector
-    call    Int19h_BootFailure              ; Should never return       
-    jmp     SHORT Int19h_SimpleBootLoader
 
 ;--------------------------------------------------------------------