Changeset 83 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Boot/BootInfo.asm

Timestamp:

Jan 6, 2011, 11:00:54 PM (13 years ago)

Author:

krille_n_@…

google:author:

krille_n_@hotmail.com

Message:

Minor size optimizations in various files.

File:

• trunk/XTIDE_Universal_BIOS/Src/Boot/BootInfo.asm (modified) (2 diffs)

trunk/XTIDE_Universal_BIOS/Src/Boot/BootInfo.asm

@@ -2 +2 @@
 ; Project name  :   IDE BIOS
 ; Created date  :   16.3.2010
-; Last update   :   9.4.2010
-; Author        :   Tomi Tilli
+; Last update   :   6.1.2011
+; Author        :   Tomi Tilli,
+;               :   Krister Nordvall (optimizations)
 ; Description   :   Functions for generating and accessing drive
 ;                   information to be displayed on boot menu.
@@ -50 +51 @@
     sub     bl, [RAMVARS.bFirstDrv]     ; Drive number to index
     mul     bl                          ; AX = Offset inside BOOTNFO array
-    mov     bx, ax                      ; Copy offset to BX
-    add     bx, BOOTVARS.rgBootNfo      ; Add offset to BOOTNFO array
+    add     ax, BOOTVARS.rgBootNfo      ; Add offset to BOOTNFO array
+    xchg    bx, ax                      ; Copy result to BX
     ret