Changeset 590 in xtideuniversalbios for trunk/Assembly_Library/Src

Timestamp:

May 25, 2016, 8:16:35 AM (8 years ago)

Author:

Krister Nordvall

Message:

Changes:

• Updated URLs and copyright info in BIOSDRVS and XTIDECFG.
• BIOSDRVS should now build under Linux.
• Minor optimizations to the library.

Location:

trunk/Assembly_Library/Src

Files:

• Display/Display.asm (modified) (1 diff)
• Display/DisplayFormat.asm (modified) (4 diffs)
• Display/DisplayPrint.asm (modified) (2 diffs)
• LibraryTests.asm (modified) (1 diff)

trunk/Assembly_Library/Src/Display/Display.asm

@@ -97 +97 @@
     %define FormatNullTerminatedStringFromCSSI              Display_FormatNullTerminatedStringFromCSSI
 %ifndef EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS
-    %define PrintSignedWordFromAXWithBaseInBX               DisplayPrint_SignedWordFromAXWithBaseInBX
+    %define PrintSignedWordFromAXWithBaseInBL               DisplayPrint_SignedWordFromAXWithBaseInBL
 %endif
-    %define PrintWordFromAXwithBaseInBX                     DisplayPrint_WordFromAXWithBaseInBX
+    %define PrintWordFromAXWithBaseInBL                     DisplayPrint_WordFromAXWithBaseInBL
 %ifndef EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS OR EXCLUDE_FROM_XTIDECFG
     %define PrintQWordFromSSBPwithBaseInBX                  DisplayPrint_QWordFromSSBPwithBaseInBX

trunk/Assembly_Library/Src/Display/DisplayFormat.asm

@@ -334 +334 @@
 d_FormatSignedDecimalWord:
     mov     ax, [bp]
-    mov     bx, 10
-    jmp     DisplayPrint_SignedWordFromAXWithBaseInBX
+    mov     bl, 10
+    jmp     DisplayPrint_SignedWordFromAXWithBaseInBL
 %endif
 
@@ -341 +341 @@
 u_FormatUnsignedDecimalWord:
     mov     ax, [bp]
-    mov     bx, 10
-    jmp     DisplayPrint_WordFromAXWithBaseInBX
+    mov     bl, 10
+    jmp     DisplayPrint_WordFromAXWithBaseInBL
 
 ALIGN DISPLAY_JUMP_ALIGN
 x_FormatHexadecimalWord:
     mov     ax, [bp]
-    mov     bx, 16
-    call    DisplayPrint_WordFromAXWithBaseInBX
+    mov     bl, 16
+    call    DisplayPrint_WordFromAXWithBaseInBL
     mov     al, 'h'
     jmp     DisplayPrint_CharacterFromAL
@@ -354 +354 @@
 ALIGN DISPLAY_JUMP_ALIGN
 I_FormatDashForZero:
-    mov     ax, [bp]
-    test    ax,ax
-    jnz     u_FormatUnsignedDecimalWord
-    mov     [bp], word g_szDashForZero
+    cmp     WORD [bp], 0
+    jne     SHORT u_FormatUnsignedDecimalWord
+    mov     WORD [bp], g_szDashForZero
 ;;; fall-through
 
@@ -366 +365 @@
     mov     si, [bp]
 
-    cmp     si, byte 07fh       ;  well within the boundaries of ROMVARS_size
+    cmp     si, BYTE 7Fh        ; well within the boundaries of ROMVARS_size
     jb      .notFormatted
 

trunk/Assembly_Library/Src/Display/DisplayPrint.asm

@@ -83 +83 @@
 
 ;--------------------------------------------------------------------
-; DisplayPrint_SignedWordFromAXWithBaseInBX
+; DisplayPrint_SignedWordFromAXWithBaseInBL
 ;   Parameters:
 ;       AX:     Word to display
-;       BX:     Integer base (binary=2, octal=8, decimal=10, hexadecimal=16)
-;       DS:     BDA segment (zero)
-;       ES:DI:  Ptr to cursor location in video RAM
-;   Returns:
-;       DI:     Updated offset to video RAM
-;   Corrupts registers:
-;       AX, DX
+;       BL:     Integer base (binary=2, octal=8, decimal=10, hexadecimal=16)
+;       DS:     BDA segment (zero)
+;       ES:DI:  Ptr to cursor location in video RAM
+;   Returns:
+;       DI:     Updated offset to video RAM
+;   Corrupts registers:
+;       AX, BH, DX
 ;--------------------------------------------------------------------
 %ifndef EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS
 ALIGN DISPLAY_JUMP_ALIGN
-DisplayPrint_SignedWordFromAXWithBaseInBX:
-    test    ax, ax
-    jns     SHORT DisplayPrint_WordFromAXWithBaseInBX
+DisplayPrint_SignedWordFromAXWithBaseInBL:
+    sahf
+    jns     SHORT DisplayPrint_WordFromAXWithBaseInBL
 
     push    ax
@@ -105 +105 @@
     pop     ax
     neg     ax
-    ; Fall to DisplayPrint_WordFromAXWithBaseInBX
-%endif
-
-
-;--------------------------------------------------------------------
-; DisplayPrint_WordFromAXWithBaseInBX
+    ; Fall to DisplayPrint_WordFromAXWithBaseInBL
+%endif
+
+
+;--------------------------------------------------------------------
+; DisplayPrint_WordFromAXWithBaseInBL
 ;   Parameters:
 ;       AX:     Word to display
-;       BX:     Integer base (binary=2, octal=8, decimal=10, hexadecimal=16)
-;       DS:     BDA segment (zero)
-;       ES:DI:  Ptr to cursor location in video RAM
-;   Returns:
-;       DI:     Updated offset to video RAM
-;   Corrupts registers:
-;       AX, DX
+;       BL:     Integer base (binary=2, octal=8, decimal=10, hexadecimal=16)
+;       DS:     BDA segment (zero)
+;       ES:DI:  Ptr to cursor location in video RAM
+;   Returns:
+;       DI:     Updated offset to video RAM
+;   Corrupts registers:
+;       AX, BH, DX
 ;--------------------------------------------------------------------
 %ifndef MODULE_STRINGS_COMPRESSED
 ALIGN DISPLAY_JUMP_ALIGN
-DisplayPrint_WordFromAXWithBaseInBX:
+DisplayPrint_WordFromAXWithBaseInBL:
     push    cx
 
     xor     cx, cx
+    xor     bh, bh              ; Base now in BX
 ALIGN DISPLAY_JUMP_ALIGN
 .DivideLoop:

trunk/Assembly_Library/Src/LibraryTests.asm

@@ -598 +598 @@
     pop     ds
     mov     si, .rgwItems
-    mov     bx, 16
+    mov     bl, 16
 .Loop:
     lodsw
-    CALL_DISPLAY_LIBRARY PrintSignedWordFromAXWithBaseInBX
+    CALL_DISPLAY_LIBRARY PrintSignedWordFromAXWithBaseInBL
     CALL_DISPLAY_LIBRARY PrintNewlineCharacters
     loop    .Loop