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Reorganize int10 code. Fix comments.

This commit is contained in:
Jukka Heinonen 2003-01-23 01:22:40 +00:00 committed by Alexandre Julliard
parent f9b35fac09
commit fcba2b538e
1 changed files with 79 additions and 79 deletions
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158
dlls/winedos/int10.c
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@ -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 */
}
static void BIOS_SetCursorPos(BIOSDATA*data,unsigned page,unsigned X,unsigned Y)
{
data->VideoCursorPos[page*2] = X;
data->VideoCursorPos[page*2+1] = Y;
*X = data->VideoCursorPos[page*2]; /* column */
*Y = data->VideoCursorPos[page*2+1]; /* row */
}
/**********************************************************************
* DOSVM_InitializeVideoMode
* 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;
}
/**********************************************************************
* 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 @@ static void DOSVM_InitializeVideoMode( BIOSDATA *data )
/**********************************************************************
* DOSVM_Int10Handler (WPROCS.116)
* DOSVM_Int10Handler (WINEDOS16.116)
* INT10_HandleVESA
*
* 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
* 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 @@ static void DOSVM_Int10Handler_VESA( CONTEXT86 *context )
}
}
/**********************************************************************/
/**********************************************************************
* 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 @@ void WINAPI DOSVM_Int10Handler( CONTEXT86 *context )
/* 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 @@ void WINAPI DOSVM_Int10Handler( CONTEXT86 *context )
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 @@ void WINAPI DOSVM_Int10Handler( CONTEXT86 *context )
/* 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 @@ void WINAPI DOSVM_Int10Handler( CONTEXT86 *context )
/* 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 @@ void WINAPI DOSVM_Int10Handler( CONTEXT86 *context )
{
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 @@ void WINAPI DOSVM_Int10Handler( CONTEXT86 *context )
break;
case 0x4f: /* VESA */
DOSVM_Int10Handler_VESA(context);
INT10_HandleVESA(context);
break;
default:
@ -851,22 +867,6 @@ void WINAPI DOSVM_Int10Handler( CONTEXT86 *context )
}
}
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 @@ void WINAPI DOSVM_PutChar( BYTE ascii )
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 );
}