Changeset 77 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Libraries/print.asm

Timestamp:

Jan 4, 2011, 10:53:15 PM (14 years ago)

Author:

krille_n_@…

google:author:

krille_n_@hotmail.com

Message:

Minor size optimizations plus a bug fix in print.asm in Print_IntSW (DI was left hanging on the stack if the parameter in AX was positive). Also a very minor speed optimization in keys.asm in Keys_Backspace.

File:

• trunk/XTIDE_Universal_BIOS/Src/Libraries/print.asm (modified) (2 diffs)

trunk/XTIDE_Universal_BIOS/Src/Libraries/print.asm

@@ -2 +2 @@
 ; Project name  :   Print library
 ; Created date  :   6.10.2009
-; Last update   :   31.12.2009
-; Author        :   Tomi Tilli
-; Description   :   ASM library to for character and string
+; Last update   :   4.1.2011
+; Author        :   Tomi Tilli,
+;               :   Krister Nordvall (optimizations)
+; Description   :   ASM library for character and string
 ;                   printing related functions.
 
@@ -467 +468 @@
 ALIGN JUMP_ALIGN
 Print_IntSW:
+    test    ax, ax              ; Positive integer?
+    jns     Print_IntUW         ;  If so, jump to print it
     push    di                  ; Store DI
-    cmp     ax, 0               ; Positive integer?
-    jge     Print_IntUW         ;  If so, jump to print it
     push    ax                  ; Store word
     mov     dl, '-'             ; Print '-'