int10 / minor cleanups
Jukka Heinonen
jhei at iki.fi
Wed Jan 22 12:49:37 CST 2003
This patch polishes up int10.c before I start to really
improve VESA/SVGA stuff. The file has strangely placed
comments and it has somewhat misleading naming practices.
It would probably be best to fix this kind of cosmetic stuff
first so that patches containing real changes get simpler.
Changelog:
Reorganize int10 code. Fix comments.
Index: dlls/winedos/int10.c
===================================================================
RCS file: /home/wine/wine/dlls/winedos/int10.c,v
retrieving revision 1.23
diff -u -r1.23 int10.c
--- dlls/winedos/int10.c 30 Nov 2002 01:50:55 -0000 1.23
+++ dlls/winedos/int10.c 22 Jan 2003 18:42:47 -0000
@@ -30,32 +30,34 @@
WINE_DEFAULT_DEBUG_CHANNEL(int);
-static void scroll_window(int direction, char lines, char row1,
- char col1, char row2, char col2, char attribute);
-#define SCROLL_UP 1
-#define SCROLL_DOWN 2
-
-static void BIOS_GetCursorPos(BIOSDATA*data,unsigned page,unsigned*X,unsigned*Y)
+/**********************************************************************
+ * INT10_GetCursorPos
+ */
+static void INT10_GetCursorPos(BIOSDATA*data,unsigned page,unsigned*X,unsigned*Y)
{
- *X = data->VideoCursorPos[page*2]; /* column */
- *Y = data->VideoCursorPos[page*2+1]; /* row */
+ *X = data->VideoCursorPos[page*2]; /* column */
+ *Y = data->VideoCursorPos[page*2+1]; /* row */
}
-static void BIOS_SetCursorPos(BIOSDATA*data,unsigned page,unsigned X,unsigned Y)
+
+/**********************************************************************
+ * INT10_SetCursorPos
+ */
+static void INT10_SetCursorPos(BIOSDATA*data,unsigned page,unsigned X,unsigned Y)
{
- data->VideoCursorPos[page*2] = X;
- data->VideoCursorPos[page*2+1] = Y;
+ data->VideoCursorPos[page*2] = X;
+ data->VideoCursorPos[page*2+1] = Y;
}
/**********************************************************************
- * DOSVM_InitializeVideoMode
+ * INT10_InitializeVideoMode
*
* The first time this function is called VGA emulation is set to the
* default text mode.
*/
-static void DOSVM_InitializeVideoMode( BIOSDATA *data )
+static void INT10_InitializeVideoMode( BIOSDATA *data )
{
static BOOL already_initialized = FALSE;
unsigned width;
@@ -84,41 +86,11 @@
/**********************************************************************
- * DOSVM_Int10Handler (WPROCS.116)
- * DOSVM_Int10Handler (WINEDOS16.116)
- *
- * Handler for int 10h (video).
+ * INT10_HandleVESA
*
- * NOTE:
- * Most INT 10 functions for text-mode, CGA, EGA, and VGA cards
- * are present in this list. (SVGA and XGA are not) That is not
- * to say that all these functions should be supported, but if
- * anyone is brain-damaged enough to want to emulate one of these
- * beasts then this should get you started.
- *
- * NOTE:
- * Several common graphical extensions used by Microsoft hook
- * off of here. I have *not* added them to this list (yet). They
- * include:
- *
- * MSHERC.COM - More functionality for Hercules cards.
- * EGA.SYS (also MOUSE.COM) - More for EGA cards.
- *
- * Yes, MS also added this support into their mouse driver. Don't
- * ask me, I don't work for them.
- *
- * Joseph Pranevich - 9/98
- *
- * Jess Haas 2/99
- * Added support for Vesa. It is not complete but is a start.
- * NOTE: Im not sure if i did all this right or if eny of it works.
- * Currently i dont have a program that uses Vesa that actually gets far
- * enough without crashing to do vesa stuff.
- *
- * Added additional vga graphic support - 3/99
+ * Handler for VESA functions (int10 function 0x4f).
*/
-
-static void DOSVM_Int10Handler_VESA( CONTEXT86 *context )
+static void INT10_HandleVESA( CONTEXT86 *context )
{
BIOSDATA *data = BIOS_DATA;
@@ -369,13 +341,45 @@
}
}
-/**********************************************************************/
+/**********************************************************************
+ * DOSVM_Int10Handler
+ *
+ * Handler for int 10h (video).
+ *
+ * NOTE:
+ * Most INT 10 functions for text-mode, CGA, EGA, and VGA cards
+ * are present in this list. (SVGA and XGA are not) That is not
+ * to say that all these functions should be supported, but if
+ * anyone is brain-damaged enough to want to emulate one of these
+ * beasts then this should get you started.
+ *
+ * NOTE:
+ * Several common graphical extensions used by Microsoft hook
+ * off of here. I have *not* added them to this list (yet). They
+ * include:
+ *
+ * MSHERC.COM - More functionality for Hercules cards.
+ * EGA.SYS (also MOUSE.COM) - More for EGA cards.
+ *
+ * Yes, MS also added this support into their mouse driver. Don't
+ * ask me, I don't work for them.
+ *
+ * Joseph Pranevich - 9/98
+ *
+ * Jess Haas 2/99
+ * Added support for Vesa. It is not complete but is a start.
+ * NOTE: Im not sure if i did all this right or if eny of it works.
+ * Currently i dont have a program that uses Vesa that actually gets far
+ * enough without crashing to do vesa stuff.
+ *
+ * Added additional vga graphic support - 3/99
+ */
void WINAPI DOSVM_Int10Handler( CONTEXT86 *context )
{
BIOSDATA *data = BIOS_DATA;
- DOSVM_InitializeVideoMode( data );
+ INT10_InitializeVideoMode( data );
switch(AH_reg(context)) {
@@ -455,7 +459,7 @@
/* BH = Page Number */ /* Not supported */
/* DH = Row */ /* 0 is left */
/* DL = Column */ /* 0 is top */
- BIOS_SetCursorPos(data,BH_reg(context),DL_reg(context),DH_reg(context));
+ INT10_SetCursorPos(data,BH_reg(context),DL_reg(context),DH_reg(context));
if (BH_reg(context))
{
FIXME("Set Cursor Position: Cannot set to page %d\n",
@@ -475,7 +479,7 @@
TRACE("Get cursor position and size (page %d)\n", BH_reg(context));
SET_CX( context, data->VideoCursorType );
- BIOS_GetCursorPos(data,BH_reg(context),&col,&row);
+ INT10_GetCursorPos(data,BH_reg(context),&col,&row);
SET_DH( context, row );
SET_DL( context, col );
TRACE("Cursor Position: %d/%d\n", DL_reg(context), DH_reg(context));
@@ -497,10 +501,16 @@
/* BH = Attribute */
/* CH,CL = row, col upper-left */
/* DH,DL = row, col lower-right */
- scroll_window(SCROLL_UP, AL_reg(context), CH_reg(context),
- CL_reg(context), DH_reg(context), DL_reg(context),
- BH_reg(context));
TRACE("Scroll Up Window %d\n", AL_reg(context));
+
+ if (AL_reg(context) == 0)
+ VGA_ClearText( CH_reg(context), CL_reg(context),
+ DH_reg(context), DL_reg(context),
+ BH_reg(context) );
+ else
+ VGA_ScrollUpText( CH_reg(context), CL_reg(context),
+ DH_reg(context), DL_reg(context),
+ AL_reg(context), BH_reg(context) );
break;
case 0x07: /* SCROLL DOWN WINDOW */
@@ -508,10 +518,16 @@
/* BH = Attribute */
/* CH,CL = row, col upper-left */
/* DH,DL = row, col lower-right */
- scroll_window(SCROLL_DOWN, AL_reg(context), CH_reg(context),
- CL_reg(context), DH_reg(context), DL_reg(context),
- BH_reg(context));
TRACE("Scroll Down Window %d\n", AL_reg(context));
+
+ if (AL_reg(context) == 0)
+ VGA_ClearText( CH_reg(context), CL_reg(context),
+ DH_reg(context), DL_reg(context),
+ BH_reg(context) );
+ else
+ VGA_ScrollDownText( CH_reg(context), CL_reg(context),
+ DH_reg(context), DL_reg(context),
+ AL_reg(context), BH_reg(context) );
break;
case 0x08: /* READ CHARACTER AND ATTRIBUTE AT CURSOR POSITION */
@@ -544,7 +560,7 @@
{
unsigned row, col;
- BIOS_GetCursorPos(data,BH_reg(context),&col,&row);
+ INT10_GetCursorPos(data,BH_reg(context),&col,&row);
VGA_WriteChars(col, row,
AL_reg(context),
(AH_reg(context) == 0x09) ? BL_reg(context) : -1,
@@ -842,7 +858,7 @@
break;
case 0x4f: /* VESA */
- DOSVM_Int10Handler_VESA(context);
+ INT10_HandleVESA(context);
break;
default:
@@ -851,22 +867,6 @@
}
}
-static void scroll_window(int direction, char lines, char row1,
- char col1, char row2, char col2, char attribute)
-{
- if (!lines) /* Actually, clear the window */
- {
- VGA_ClearText(row1, col1, row2, col2, attribute);
- }
- else if (direction == SCROLL_UP)
- {
- VGA_ScrollUpText(row1, col1, row2, col2, lines, attribute);
- }
- else
- {
- VGA_ScrollDownText(row1, col1, row2, col2, lines, attribute);
- }
-}
/**********************************************************************
* DOSVM_PutChar
@@ -881,9 +881,9 @@
TRACE("char: 0x%02x(%c)\n", ascii, ascii);
- DOSVM_InitializeVideoMode( data );
+ INT10_InitializeVideoMode( data );
VGA_PutChar( ascii );
VGA_GetCursorPos( &xpos, &ypos );
- BIOS_SetCursorPos( data, 0, xpos, ypos );
+ INT10_SetCursorPos( data, 0, xpos, ypos );
}
--
Jukka Heinonen <http://www.iki.fi/jhei/>
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