Changeset 524 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/VariablesAndDPTs/BootVars.asm

Timestamp:

Mar 14, 2013, 2:28:30 PM (11 years ago)

Author:

aitotat@…

google:author:

aitotat@gmail.com

Message:

Changes to XTIDE Universal BIOS:

• Min time to display hotkeys finally work correctly.
• AT builds do not copy existing INT 13h handler to 40h by default, XT builds do.
• Interrupts are enabled for Primary and Secondary controller by default on AT builds.

File:

• trunk/XTIDE_Universal_BIOS/Src/VariablesAndDPTs/BootVars.asm (modified) (3 diffs)

trunk/XTIDE_Universal_BIOS/Src/VariablesAndDPTs/BootVars.asm

@@ -36 +36 @@
 %endif
 
-    ; Clear to zero
+    ; Clear all DRVDETECTINFO structs to zero
     mov     al, DRVDETECTINFO_size
     mul     BYTE [cs:ROMVARS.bIdeCnt]
-%ifdef MODULE_HOTKEYS ; We must not initialize anything before this!
-    mov     di, BOOTVARS.hotkeyVars + HOTKEYVARS.clearToZeroFromThisPoint   
-%else
-    mov     di, BOOTVARS.clearToZeroFromThisPoint
-%endif
-    add     ax, BOOTVARS_size
-    sub     ax, di
+    mov     di, BOOTVARS.rgDrvDetectInfo    ; We must not initialize anything before this!
     xchg    cx, ax
 
@@ -51 +45 @@
     call    Memory_ZeroESDIwithSizeInCX
 
-    ; Store default drives to boot from
+    ; Initialize HOTKEYVARS by storing default drives to boot from
+    mov     WORD [es:BOOTVARS.hotkeyVars+HOTKEYVARS.wFddAndHddLetters], DEFAULT_FLOPPY_DRIVE_LETTER | (DEFAULT_HARD_DRIVE_LETTER<<8)
     mov     dl, [cs:ROMVARS.bBootDrv]
-
-    ; fall through to BootVars_StoreHotkeyForDriveNumberInDL
-
-;--------------------------------------------------------------------
-; BootVars_StoreHotkeyForDriveNumberInDL
-;   Parameters:
-;       DL:     Floppy or Hard Drive number
-;       DS:     RAMVARS Segment
-;       ES:     BDA Segment
-;   Returns:
-;       Nothing
-;   Corrupts registers:
-;       AX, CX, DI
-;--------------------------------------------------------------------
-BootVars_StoreHotkeyForDriveNumberInDL:
-    mov     WORD [es:BOOTVARS.hotkeyVars+HOTKEYVARS.wFddAndHddLetters], DEFAULT_FLOPPY_DRIVE_LETTER | (DEFAULT_HARD_DRIVE_LETTER<<8)
     call    DriveXlate_ConvertDriveNumberFromDLtoDriveLetter
     jmp     HotkeyBar_StoreHotkeyToBootvarsForDriveLetterInDL
@@ -74 +53 @@
 %else
     jmp     Memory_ZeroESDIwithSizeInCX
-
 %endif ; MODULE_HOTKEYS