Changeset 491 in xtideuniversalbios for trunk/Assembly_Library/Src/Util

Timestamp:

Dec 15, 2012, 2:46:29 PM (12 years ago)

Author:

krille_n_@…

google:author:

krille_n_@hotmail.com

Message:

Changes:

• Added a new define (USE_UNDOC_INTEL) that enables optimizations possible by using undocumented instructions available on all Intel processors and truly compatible clones. AFAIK the only exceptions are the NEC V-series and the Sony CXQ70108 processors so this option should be safe for use on the AT builds.
• Building BIOSDRVS or the BIOS without MODULE_STRINGS_COMPRESSED would fail due to the recent code exclusions so I changed them a bit. Also fixed the mistaken change to Main.asm
• Changed the Tandy specific info in Configuration_FullMode.txt so it matches the info in the Wiki.
• Optimizations and fixes in general.

Location:

trunk/Assembly_Library/Src/Util

Files:

• Registers.asm (modified) (3 diffs)
• Size.asm (modified) (4 diffs)

trunk/Assembly_Library/Src/Util/Registers.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.      
+; GNU General Public License for more details.
 ; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 ;
-        
+
 ; Section containing code
 SECTION .text
@@ -52 +52 @@
 ;       Nothing
 ;--------------------------------------------------------------------
+%ifdef INCLUDE_MENU_LIBRARY
 ALIGN JUMP_ALIGN
-%ifdef INCLUDE_MENU_LIBRARY     
 Registers_CopySSBPtoESDI:
     COPY_SSBP_TO_ESDI

trunk/Assembly_Library/Src/Util/Size.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.      
+; GNU General Public License for more details.
 ; Visit http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
-;       
+;
 
 %ifdef INCLUDE_MENU_LIBRARY
@@ -68 +68 @@
     ; Convert remainder to tenths
     xchg    bx, ax                      ; Store AX
-    mov     ax, 10
-    mul     cx                          ; DX:AX = remainder * 10
-    eSHR_IM ax, 10                      ; Divide AX by 1024
+    mov     ax, 5
+    mul     cx                          ; DX:AX = remainder * (10 / 2)
+%ifdef USE_186
+    shr     ax, 9                       ; Divide AX by (1024 / 2)
+%else
+    shr     ax, 1
+    mov     al, ah
+    cbw
+%endif
     xchg    cx, ax                      ; CX = tenths
     xchg    ax, bx
@@ -124 +130 @@
 ;--------------------------------------------------------------------
 ALIGN UTIL_SIZE_JUMP_ALIGN
-Size_ConvertSectorCountInBXDXAXtoKiB:               ; unused entrypoint ok
+Size_ConvertSectorCountInBXDXAXtoKiB:   ; unused entrypoint ok
 Size_DivideBXDXAXbyTwo:
     shr     bx, 1                   ; Divide sector count by 2...