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git://source.winehq.org/git/wine.git
synced 2024-09-14 19:45:39 +00:00
Reorganize int10 code. Fix comments.
This commit is contained in:
Jukka Heinonen
Alexandre Julliard
parent
f9b35fac09
commit
fcba2b538e
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@ -30,32 +30,34 @@
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WINE_DEFAULT_DEBUG_CHANNEL(int);
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static void scroll_window(int direction, char lines, char row1,
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char col1, char row2, char col2, char attribute);
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#define SCROLL_UP 1
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#define SCROLL_DOWN 2
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static void BIOS_GetCursorPos(BIOSDATA*data,unsigned page,unsigned*X,unsigned*Y)
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/**********************************************************************
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* INT10_GetCursorPos
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*/
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static void INT10_GetCursorPos(BIOSDATA*data,unsigned page,unsigned*X,unsigned*Y)
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{
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*X = data->VideoCursorPos[page*2]; /* column */
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*Y = data->VideoCursorPos[page*2+1]; /* row */
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}
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static void BIOS_SetCursorPos(BIOSDATA*data,unsigned page,unsigned X,unsigned Y)
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{
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data->VideoCursorPos[page*2] = X;
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data->VideoCursorPos[page*2+1] = Y;
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*X = data->VideoCursorPos[page*2]; /* column */
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*Y = data->VideoCursorPos[page*2+1]; /* row */
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}
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/**********************************************************************
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* DOSVM_InitializeVideoMode
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* INT10_SetCursorPos
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*/
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static void INT10_SetCursorPos(BIOSDATA*data,unsigned page,unsigned X,unsigned Y)
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{
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data->VideoCursorPos[page*2] = X;
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data->VideoCursorPos[page*2+1] = Y;
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}
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/**********************************************************************
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* INT10_InitializeVideoMode
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*
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* The first time this function is called VGA emulation is set to the
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* default text mode.
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*/
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static void DOSVM_InitializeVideoMode( BIOSDATA *data )
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static void INT10_InitializeVideoMode( BIOSDATA *data )
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{
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static BOOL already_initialized = FALSE;
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unsigned width;
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@ -84,41 +86,11 @@ static void DOSVM_InitializeVideoMode( BIOSDATA *data )
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/**********************************************************************
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* DOSVM_Int10Handler (WPROCS.116)
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* DOSVM_Int10Handler (WINEDOS16.116)
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* INT10_HandleVESA
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*
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* Handler for int 10h (video).
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*
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* NOTE:
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* Most INT 10 functions for text-mode, CGA, EGA, and VGA cards
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* are present in this list. (SVGA and XGA are not) That is not
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* to say that all these functions should be supported, but if
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* anyone is brain-damaged enough to want to emulate one of these
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* beasts then this should get you started.
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*
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* NOTE:
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* Several common graphical extensions used by Microsoft hook
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* off of here. I have *not* added them to this list (yet). They
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* include:
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*
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* MSHERC.COM - More functionality for Hercules cards.
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* EGA.SYS (also MOUSE.COM) - More for EGA cards.
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*
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* Yes, MS also added this support into their mouse driver. Don't
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* ask me, I don't work for them.
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*
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* Joseph Pranevich - 9/98
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*
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* Jess Haas 2/99
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* Added support for Vesa. It is not complete but is a start.
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* NOTE: Im not sure if i did all this right or if eny of it works.
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* Currently i dont have a program that uses Vesa that actually gets far
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* enough without crashing to do vesa stuff.
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*
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* Added additional vga graphic support - 3/99
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* Handler for VESA functions (int10 function 0x4f).
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*/
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static void DOSVM_Int10Handler_VESA( CONTEXT86 *context )
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static void INT10_HandleVESA( CONTEXT86 *context )
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{
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BIOSDATA *data = BIOS_DATA;
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@ -369,13 +341,45 @@ static void DOSVM_Int10Handler_VESA( CONTEXT86 *context )
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}
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}
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/**********************************************************************/
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/**********************************************************************
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* DOSVM_Int10Handler
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*
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* Handler for int 10h (video).
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*
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* NOTE:
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* Most INT 10 functions for text-mode, CGA, EGA, and VGA cards
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* are present in this list. (SVGA and XGA are not) That is not
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* to say that all these functions should be supported, but if
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* anyone is brain-damaged enough to want to emulate one of these
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* beasts then this should get you started.
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*
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* NOTE:
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* Several common graphical extensions used by Microsoft hook
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* off of here. I have *not* added them to this list (yet). They
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* include:
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*
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* MSHERC.COM - More functionality for Hercules cards.
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* EGA.SYS (also MOUSE.COM) - More for EGA cards.
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*
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* Yes, MS also added this support into their mouse driver. Don't
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* ask me, I don't work for them.
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*
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* Joseph Pranevich - 9/98
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*
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* Jess Haas 2/99
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* Added support for Vesa. It is not complete but is a start.
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* NOTE: Im not sure if i did all this right or if eny of it works.
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* Currently i dont have a program that uses Vesa that actually gets far
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* enough without crashing to do vesa stuff.
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*
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* Added additional vga graphic support - 3/99
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*/
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void WINAPI DOSVM_Int10Handler( CONTEXT86 *context )
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{
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BIOSDATA *data = BIOS_DATA;
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DOSVM_InitializeVideoMode( data );
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INT10_InitializeVideoMode( data );
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switch(AH_reg(context)) {
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@ -455,7 +459,7 @@ void WINAPI DOSVM_Int10Handler( CONTEXT86 *context )
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/* BH = Page Number */ /* Not supported */
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/* DH = Row */ /* 0 is left */
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/* DL = Column */ /* 0 is top */
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BIOS_SetCursorPos(data,BH_reg(context),DL_reg(context),DH_reg(context));
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INT10_SetCursorPos(data,BH_reg(context),DL_reg(context),DH_reg(context));
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if (BH_reg(context))
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{
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FIXME("Set Cursor Position: Cannot set to page %d\n",
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@ -475,7 +479,7 @@ void WINAPI DOSVM_Int10Handler( CONTEXT86 *context )
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TRACE("Get cursor position and size (page %d)\n", BH_reg(context));
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SET_CX( context, data->VideoCursorType );
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BIOS_GetCursorPos(data,BH_reg(context),&col,&row);
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INT10_GetCursorPos(data,BH_reg(context),&col,&row);
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SET_DH( context, row );
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SET_DL( context, col );
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TRACE("Cursor Position: %d/%d\n", DL_reg(context), DH_reg(context));
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@ -497,10 +501,16 @@ void WINAPI DOSVM_Int10Handler( CONTEXT86 *context )
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/* BH = Attribute */
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/* CH,CL = row, col upper-left */
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/* DH,DL = row, col lower-right */
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scroll_window(SCROLL_UP, AL_reg(context), CH_reg(context),
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CL_reg(context), DH_reg(context), DL_reg(context),
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BH_reg(context));
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TRACE("Scroll Up Window %d\n", AL_reg(context));
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if (AL_reg(context) == 0)
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VGA_ClearText( CH_reg(context), CL_reg(context),
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DH_reg(context), DL_reg(context),
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BH_reg(context) );
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else
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VGA_ScrollUpText( CH_reg(context), CL_reg(context),
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DH_reg(context), DL_reg(context),
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AL_reg(context), BH_reg(context) );
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break;
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case 0x07: /* SCROLL DOWN WINDOW */
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@ -508,10 +518,16 @@ void WINAPI DOSVM_Int10Handler( CONTEXT86 *context )
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/* BH = Attribute */
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/* CH,CL = row, col upper-left */
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/* DH,DL = row, col lower-right */
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scroll_window(SCROLL_DOWN, AL_reg(context), CH_reg(context),
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CL_reg(context), DH_reg(context), DL_reg(context),
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BH_reg(context));
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TRACE("Scroll Down Window %d\n", AL_reg(context));
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if (AL_reg(context) == 0)
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VGA_ClearText( CH_reg(context), CL_reg(context),
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DH_reg(context), DL_reg(context),
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BH_reg(context) );
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else
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VGA_ScrollDownText( CH_reg(context), CL_reg(context),
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DH_reg(context), DL_reg(context),
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AL_reg(context), BH_reg(context) );
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break;
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case 0x08: /* READ CHARACTER AND ATTRIBUTE AT CURSOR POSITION */
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@ -544,7 +560,7 @@ void WINAPI DOSVM_Int10Handler( CONTEXT86 *context )
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{
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unsigned row, col;
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BIOS_GetCursorPos(data,BH_reg(context),&col,&row);
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INT10_GetCursorPos(data,BH_reg(context),&col,&row);
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VGA_WriteChars(col, row,
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AL_reg(context),
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(AH_reg(context) == 0x09) ? BL_reg(context) : -1,
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@ -842,7 +858,7 @@ void WINAPI DOSVM_Int10Handler( CONTEXT86 *context )
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break;
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case 0x4f: /* VESA */
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DOSVM_Int10Handler_VESA(context);
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INT10_HandleVESA(context);
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break;
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default:
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@ -851,22 +867,6 @@ void WINAPI DOSVM_Int10Handler( CONTEXT86 *context )
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}
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}
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static void scroll_window(int direction, char lines, char row1,
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char col1, char row2, char col2, char attribute)
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{
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if (!lines) /* Actually, clear the window */
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{
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VGA_ClearText(row1, col1, row2, col2, attribute);
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}
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else if (direction == SCROLL_UP)
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{
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VGA_ScrollUpText(row1, col1, row2, col2, lines, attribute);
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}
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else
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{
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VGA_ScrollDownText(row1, col1, row2, col2, lines, attribute);
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}
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}
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/**********************************************************************
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* DOSVM_PutChar
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@ -881,9 +881,9 @@ void WINAPI DOSVM_PutChar( BYTE ascii )
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TRACE("char: 0x%02x(%c)\n", ascii, ascii);
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DOSVM_InitializeVideoMode( data );
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INT10_InitializeVideoMode( data );
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VGA_PutChar( ascii );
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VGA_GetCursorPos( &xpos, &ypos );
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BIOS_SetCursorPos( data, 0, xpos, ypos );
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INT10_SetCursorPos( data, 0, xpos, ypos );
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}
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