Changeset 52 in xtideuniversalbios for trunk/Assembly_Library/Src/Display/DisplayContext.asm

Timestamp:

Oct 12, 2010, 6:51:07 PM (15 years ago)

Author:

Tomi Tilli

google:author:

aitotat

Message:

Changes to Assembly Library:
Completely rewritten line splitting (slower but no need to modify string).
Some changes to string processing functions.
Saved few bytes from CGA detection.

File:

• trunk/Assembly_Library/Src/Display/DisplayContext.asm (modified) (3 diffs)

trunk/Assembly_Library/Src/Display/DisplayContext.asm

@@ -2 +2 @@
 ; Project name  :   Assembly Library
 ; Created date  :   25.6.2010
-; Last update   :   9.10.2010
+; Last update   :   11.10.2010
 ; Author        :   Tomi Tilli
 ; Description   :   Functions for managing display context.
@@ -119 +119 @@
 
 ;--------------------------------------------------------------------
-; DisplayContext_PrepareOffScreenBufferInESBXtoESDI
-;   Parameters:
-;       BX:AX:  Ptr to off screen buffer
-;   Returns:
-;       Nothing
-;   Corrupts registers:
-;       AX
-;--------------------------------------------------------------------
-ALIGN JUMP_ALIGN
-DisplayContext_PrepareOffScreenBufferInESBXtoESDI:
+; DisplayContext_PrepareOffScreenBufferInESBXwithLengthInCX
+;   Parameters:
+;       CX:     Off screen buffer length in characters
+;       ES:BX:  Ptr to off screen buffer
+;   Returns:
+;       Nothing
+;   Corrupts registers:
+;       AX, DI
+;--------------------------------------------------------------------
+ALIGN JUMP_ALIGN
+DisplayContext_PrepareOffScreenBufferInESBXwithLengthInCX:
     push    ds
 
@@ -139 +140 @@
     mov     ax, BUFFER_OUTPUT_WITH_CHAR_ONLY
     call    DisplayContext_SetCharOutputFunctionFromAXwithAttribFlagInBL
+    mov     [VIDEO_BDA.displayContext+DISPLAY_CONTEXT.wCharOutParam], cx
 
     mov     bx, di