Changeset 133 in xtideuniversalbios for trunk/Assembly_Library/Src/File/Drive.asm

Timestamp:

Mar 12, 2011, 1:48:48 PM (13 years ago)

Author:

krille_n_@…

google:author:

krille_n_@hotmail.com

Message:

Size optimizations in various files in the Assembly Library. Also a very small change to a string in XTIDE_Universal_BIOS_Configurator_v2/Src/Strings.asm

File:

• trunk/Assembly_Library/Src/File/Drive.asm (modified) (4 diffs)

trunk/Assembly_Library/Src/File/Drive.asm

@@ -1 @@
-; File name     :   Drive.asm
 ; Project name  :   Assembly Library
-; Created date  :   1.9.2010
-; Last update   :   3.9.2010
-; Author        :   Tomi Tilli
 ; Description   :   Functions for accessing drives.
 
@@ -52 +48 @@
     xor     bx, bx
     xor     ax, ax              ; Temporary use BX:AX for flags
-    xor     dx, dx              ; Start from drive 0
+    cwd                         ; Start from drive 0
     call    .CheckDriveValidityUntilCXisZero
     mov     dx, bx              ; Flags now in DX:AX
@@ -163 +159 @@
 Drive_GetDefaultToAL:
     mov     ah, GET_CURRENT_DEFAULT_DRIVE
-    int     DOS_INTERRUPT_21h
-    ret
+    SKIP2B  f   ; cmp ax, <next instruction>
+    ; Fall to Drive_SetDefaultFromDL
 
 
@@ -176 +172 @@
 ;       AH
 ;--------------------------------------------------------------------
-ALIGN JUMP_ALIGN
 Drive_SetDefaultFromDL:
     mov     ah, SELECT_DEFAULT_DRIVE
     int     DOS_INTERRUPT_21h
     ret
-