Changeset 90 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Handlers

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.

Location:

trunk/XTIDE_Universal_BIOS/Src/Handlers

Files:

• Int13h.asm (modified) (3 diffs)
• Int13h/AH14h_HDiag.asm (deleted)
• Int13h/AH5h_HFormat.asm (deleted)
• Int18h.asm (deleted)
• Int19h.asm (modified) (2 diffs)
• Int19hLate.asm (added)
• Int19hMenu.asm (modified) (3 diffs)

trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h.asm

@@ -1 @@
-; File name     :   Int13h_Jump.asm
-; Project name  :   IDE BIOS
-; Created date  :   21.9.2007
-; Last update   :   14.1.2011
-; Author        :   Tomi Tilli,
-;               :   Krister Nordvall (optimizations)
+; Project name  :   XTIDE Universal BIOS
 ; Description   :   Int 13h BIOS functions (Floppy and Hard disk).
 
@@ -227 +222 @@
     dw  AH3h_HandlerForWriteDiskSectors                 ; 03h, Write Disk Sectors (All)
     dw  AH4h_HandlerForVerifyDiskSectors                ; 04h, Verify Disk Sectors (All)
-    dw  AH5h_HandlerForFormatDiskTrack                  ; 05h, Format Disk Track (XT, AT, EISA)
+    dw  Int13h_UnsupportedFunction                      ; 05h, Format Disk Track (XT, AT, EISA)
     dw  Int13h_UnsupportedFunction                      ; 06h, Format Disk Track with Bad Sectors (XT)
     dw  Int13h_UnsupportedFunction                      ; 07h, Format Multiple Cylinders (XT)
@@ -242 +237 @@
     dw  Int13h_UnsupportedFunction                      ; 12h, Controller RAM Diagnostic (XT)
     dw  Int13h_UnsupportedFunction                      ; 13h, Drive Diagnostic (XT)
-    dw  AH14h_HandlerForControllerInternalDiagnostic    ; 14h, Controller Internal Diagnostic (All)
+    dw  Int13h_UnsupportedFunction                      ; 14h, Controller Internal Diagnostic (All)
     dw  AH15h_HandlerForReadDiskDriveSize               ; 15h, Read Disk Drive Size (AT+)
     dw  Int13h_UnsupportedFunction                      ; 16h, 

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
 
 ;--------------------------------------------------------------------

trunk/XTIDE_Universal_BIOS/Src/Handlers/Int19hMenu.asm

@@ -1 @@
-; File name     :   Int19hMenu.asm
-; Project name  :   IDE BIOS
-; Created date  :   25.3.2010
-; Last update   :   12.4.2010
-; Author        :   Tomi Tilli
+; Project name  :   XTIDE Universal BIOS
 ; Description   :   Int 19h BIOS functions for Boot Menu.
 
@@ -24 +20 @@
     LOAD_BDA_SEGMENT_TO ds, ax
     call    BootVars_StorePostStackPointer
-    call    BootVars_StoreSystemInt18hAndInstallOurs
 
     ; Install new INT 19h handler now that BOOTVARS has been initialized
@@ -111 +106 @@
 ALIGN JUMP_ALIGN
 .Int18hRomBoot:
-    call    BootVars_RestoreSystemInt18h
     call    BootVars_SwitchBackToPostStack
-    call    Int19h_BootFailure          ; Should never return
-    jmp     SHORT Int19hMenu_BootLoader ; Status unknown so reinitialize boot loader
+    jmp     Int19h_BootFailure          ; Never returns