Changeset 505 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Menus/BootMenu

Timestamp:

Feb 25, 2013, 4:23:09 PM (12 years ago)

Author:

krille_n_@…

google:author:

krille_n_@hotmail.com

Message:

Changes:

• Reverted the changes to MenuEvents.inc done in r492 since they broke the F1 key function in XTIDECFG.
• Added a tail-call optimized variant of the CALL_DISPLAY_LIBRARY macro (JMP_DISPLAY_LIBRARY).
• Put a block size limit in AH1Eh_ChangeXTCFmodeBasedOnControlRegisterInAL. I think it's needed but if not, it's easy to remove.
• Other optimizations and fixes.

File:

• trunk/XTIDE_Universal_BIOS/Src/Menus/BootMenu/BootMenu.asm (modified) (6 diffs)

trunk/XTIDE_Universal_BIOS/Src/Menus/BootMenu/BootMenu.asm

@@ -3 +3 @@
 
 ;
-; XTIDE Universal BIOS and Associated Tools 
+; XTIDE Universal BIOS and Associated Tools
 ; Copyright (C) 2009-2010 by Tomi Tilli, 2011-2012 by XTIDE Universal BIOS Team.
 ;
@@ -10 +10 @@
 ; the Free Software Foundation; either version 2 of the License, or
 ; (at your option) any later version.
-; 
+;
 ; This program is distributed in the hope that it will be useful,
 ; but WITHOUT ANY WARRANTY; without even the implied warranty of
 ; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 ; GNU General Public License for more details.
-; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html       
-;       
+; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
+;
 
 ; Section containing code
@@ -24 +24 @@
 ; Displays Boot Menu and returns Drive or Function number.
 ;
-; BootMenu_DisplayAndStoreSelection
+; BootMenu_DisplayAndReturnDriveInDLRomBootClearCF
 ;   Parameters:
 ;       DS:     RAMVARS segment
@@ -41 +41 @@
 
     xchg    cx, ax
-        
+
     ; Clear Boot Menu from screen
     mov     ax, ' ' | (MONO_NORMAL<<8)
@@ -52 +52 @@
 ;   Parameters:
 ;       CX:     Index of menuitem selected from Boot Menu
+;       DS:     RAMVARS segment
 ;   Returns:
 ;       DX:     Drive number to be used for booting
-;       DS:     RAMVARS segment
 ;       CF:     Set: There is a selected menu item, DL is valid
 ;               Clear: The item selected is Rom Boot, DL is not valid
 ;   Corrupts registers:
-;       AX, BX, DI
+;       AX, BX
 ;
 ; NOTE: We can't use the menu structure in here, as we are falling through
-; through from BootMenu_DisplayAndReturnDriveInDLRomBootClearCF when the
+; from BootMenu_DisplayAndReturnDriveInDLRomBootClearCF when the
 ; menu structure has already been destroyed.
 ;--------------------------------------------------------------------
@@ -73 +73 @@
     sub     dl, al                          ; Remove floppy drives from index
     call    RamVars_GetHardDiskCountFromBDAtoAX
-    or      al, 80h                         ; Or 80h into AL before the sub             
+    or      al, 80h                         ; Or 80h into AL before the sub
     cmp     dl, al                          ; Set CF if hard disk
                                             ; Clear CF if last item, beyond hard disk list, which indicates ROM boot