Changeset 181 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Boot/BootMenu.asm

Timestamp:

Nov 13, 2011, 3:38:40 PM (12 years ago)

Author:

krille_n_@…

google:author:

krille_n_@hotmail.com

Message:

Changes to all parts of the project:

• Size optimizations.
• Added a define (EXCLUDE_FROM_XTIDECFG) to exclude unused library code from XTIDECFG.
• Tried to minimize time spent with interrupts disabled.
• Some minor attempts to improve speed (reordering instructions etc).
• Tried to improve readability, did some cleanup and fixed some errors in comments.

File:

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

trunk/XTIDE_Universal_BIOS/Src/Boot/BootMenu.asm

@@ -102 +102 @@
     CALL_DISPLAY_LIBRARY GetColumnsToALandRowsToAH
     sub     ah, MENU_SCREEN_BOTTOM_LINES*2  ; Leave space for bottom info
-    MIN_U   ah, cl
+    cmp     ah, cl
+    jb      SHORT .Return
+    mov     ah, cl
+ALIGN JUMP_ALIGN, ret
+.Return:
     ret
 
@@ -148 +152 @@
     call    FloppyDrive_GetCountToCX
     add     cl, 'A'
-    MAX_U   cl, 'C'
+    cmp     cl, 'C'
+    ja      .Return
+    mov     cl, 'C'
+ALIGN JUMP_ALIGN, ret
+.Return:
     ret