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Text File | 1991-03-15 | 18.2 KB | 740 lines

..pgno01 ..foot60A7-## ..head02L────────────────────────────────────────────────────────────────────── ..head04L────────────────────────────────────────────────────────────────────── ..head03AbvCurEmulation ■ Display Adapters [VGA] ■ Source Module Name b101234d.asm ■ Description Enables or disables cursor emulation for the currently active display. When cursor emulation is enabled, the ROM BIOS automatically remaps INT 10H Function 01H cursor starting scan and ending scan lines for the current character cell dimensions. ■ Summary INT2 FPENTRY bvCurEmulation( INT2 setting ); Parameter Description ───────── ───────────────────────────────────────────────── setting 0 - enables emulation 1 - disable emulation ■ Function Return Value 12h - if function is supported. ..page ..head03AbvDefPalLoad ■ Display Adapters [MCGA] [VGA] ■ Source Module Name b101231d.asm ■ Description Enables or disables loading of a default palette when a video display mode is selected. ■ Summary INT2 FPENTRY bvDefPalLoad( INT2 setting ); Parameter Description ───────── ───────────────────────────────────────────────── setting 0 - enables default palette loading 1 - disable default palette loading ■ Function Return Value 12h - if function is supported. ..page ..head03AbvGetBorder ■ Display Adapters [VGA] ■ Source Module Name b101008d.asm ■ Description Obtain current color of the border. ■ Summary INT2 FPENTRY bvGetBorder( VOID ); ■ Function Return Value The attribute value of the border color. ..page ..head03AbvGetColorPgMode ■ Display Adapters [VGA] ■ Source Module Name b10101ad.asm ■ Description Gets paging mode for specified color registers and the current color page. ■ Summary VOID FPENTRY bvGetColorPgMode( INT2 *colorpg, INT2 *pgmode ); Parameter Description ───────── ───────────────────────────────────────────────── colorpg color page to get information on pgmode 00 - if 4 pages of 64 registers 01 - if 16 pages of 16 registers ■ See Also bvSetColorPgMode ..page ..head03AGetColorReg ■ Display Adapters [MCGA] [VGA] ■ Source Module Name b101015d.asm ■ Description Sets paging mode for color registers ■ Summary VOID FPENTRY bvGetColorReg( INT2 colorreg, INT2 *green, INT2 *blue, INT2 *red ); Parameter Description ───────── ───────────────────────────────────────────────── colorreg color register green green color value blue blue color value red red color value ..page ..head03AbvGetColorRegBlk ■ Display Adapters [MCGA] [VGA] ■ Source Module Name b101017d.asm ■ Description Reads the set of red, green and blue colors associated with each set of color registers. ■ Summary VOID FPENTRY bvGetColorRegBlk( UINT2 startreg, INT2 regcount, INT2 colortbl[][3] ); Parameter Description ───────── ───────────────────────────────────────────────── startreg first color register regcount number of registers colortbl color table consists of 3 bytes for each register. Each group of 3 bytes will specify the red, green, and blue values, respectively for the associated register. ..page ..head03AbvGetConfigInfo ■ Display Adapters [EGA] [VGA] ■ Source Module Name b101210d.asm ■ Description Returns configuration information for the active video system. ■ Summary VOID FPENTRY bvGetConfigInfo( INT2 *dsptype, INT2 *egamem, INT2 *fbits, INT2 *swset ); Parameter Description ───────── ───────────────────────────────────────────────── dsptype 0 - color 1 - monochrome egamem 0 - 64K 1 - 128K 2 - 192K 3 - 256K fbits feature bits swset switch setting ■ Remarks The feature bits are set from input status register zero in response to an output on the specified feature control register bits: Feature Feature control Input Status Bit(s) Output Bit Bit ─────── ─────────────── ──────────── 0 0 5 1 0 6 2 1 5 3 1 6 4-7 not used The bits in the switch settings byte indicate the state of the EGA's configuration DIP switch (1=off, 0=on). Bit Significance ───── ─────────────────────── 0 configuration switch 1 1 configuration switch 2 2 configuration switch 3 3 configuration switch 4 4-7 not used ..page ..head03AbvGetCurPos ■ Display Adapters [MDA] [CGA] [PCjr] [EGA] [MCGA] [VGA] ■ Source Module Name b100300d.asm ■ Description Returns the current position of the cusor on the display. ■ Summary VOID FPENTRY bvGetCurPos( INT2 pg, INT2 *row, INT2 *col ); Parameter Description ───────── ───────────────────────────────────────────────── pg page to get cursor position for row row (y coordinate) col col (x coordinate) ..page ..head03AbvGetCurType ■ Display Adapters [MDA] [CGA] [PCjr] [EGA] [MCGA] [VGA] ■ Source Module Name b1003x0d.asm ■ Description Returns starting and ending scan lines for the cursor in text modes. ■ Summary VOID FPENTRY bvGetCurType( INT2 pg, INT2 *stscan, INT2 *spscan ); Parameter Description ───────── ───────────────────────────────────────────────── pg page to get cursor position for stscan starting scan line for cursor spscan ending scan line for cursor ..page ..head03AbvGetFontInfo ■ Display Adapters [EGA] [MCGA] [VGA] ■ Source Module Name b101130d.asm ■ Description Returns a pointer to the character definition table for a font, and the bytes per character and rows for that font. ■ Summary VOID FPENTRY bvGetFontInfo( INT2 fontcode, UINT2 *points, INT2 *scnrows, VOID *fonttbl ); Parameter Description ───────── ───────────────────────────────────────────────── fontcode defines font table to retrieve information on points bytes per character scnrows rows per screen fonttbl address of font table requested ■ Remarks Font Code Description ──── ────────────────────────────────────────────── 00 current Int 1FH contents 01 current Int 43H contents 02 ROM 8x14 font (EGA, VGA only) 03 ROM 8x8 font (characters 00H-7FH) 04 ROM 8x8 font (characters 80H-FFH) 05 ROM alternate 9x14 font (EGA, VGA only) 06 ROM 8x16 font (MCGA, VGA only) 07 ROM alternate 9x16 font (VGA only) ..page ..head03AbvGetMode ■ Display Adapters [MDA] [CGA] [PCjr] [EGA] [MCGA] [VGA] ■ Source Module Name b100f00d.asm ■ Description Return current display mode, active page and number of columns for the active display page. ■ Summary VOID FPENTRY bvGetMode( INT2 *mode, INT2 *cols, INT2 *pg ); Parameter Description ───────── ───────────────────────────────────────────────── mode current display mode cols number of column on page pg active display page ..page ..head03AbvGetPalBorder ■ Display Adapters [VGA] ■ Source Module Name b101009d.asm ■ Description Obtain contents of all the palette registers and the color of the border. ■ Summary VOID FPENTRY bvGetPalBorder( CHAR buf[17] ); Parameter Description ───────── ───────────────────────────────────────────────── buf Bytes 00-0Fh will contain the pallete values. Byte 10h will contains the border color. ..page ..head03AbvGetPalReg ■ Display Adapters [VGA] ■ Source Module Name b101007d.asm ■ Description Return the color associated with the specified register palette. ■ Summary INT2 FPENTRY bvGetPalReg( INT2 reg ); Parameter Description ───────── ───────────────────────────────────────────────── reg return the color for this palette register. ■ Function Return Value Color for the specified palette register. ..page ..head03AbvGrayScaleSum ■ Display Adapters [MCGA] [VGA] ■ Source Module Name b101233d.asm ■ Description Enables or disables gray-scale summing for the currently active display. ■ Summary INT2 FPENTRY bvGrayScaleSum( INT2 setting ); Parameter Description ───────── ───────────────────────────────────────────────── setting 0 - enables access 1 - disable access ■ Function Return Value 12h is returned if this function is supported. ..page ..head03AbvLoad8x14Font01 ■ Display Adapters [EGA] [VGA] ■ Source Module Name b101101d.asm ■ Description Provides the default 8x14 font table in text modes. ■ Summary VOID FPENTRY bvLoad8x14Font01( INT2 block ); Parameter Description ───────── ───────────────────────────────────────────────── block specifies the block of character generator RAM. (0 or 1). ■ Remarks If this function is used on an MCGA then the BIOS will execute the function bvLoad8x16Font04. ..page ..head03AbvLoad8x14Font11 ■ Display Adapters [EGA] [VGA] ■ Source Module Name b101101d.asm ■ Description Provides the default 8x14 font table in text modes. ■ Summary VOID FPENTRY bvLoad8x14Font11( INT2 block ); Parameter Description ───────── ───────────────────────────────────────────────── block specifies the block of character generator RAM. (0 or 1). ■ Remarks Page zero must be active and if this function is used at any other time than immediately after a set mode, the results will be unpredictable. If this function is used on an MCGA then the BIOS will execute the function bvLoad8x16Font04. ..page ..head03AbvLoad8x16Font04 ■ Display Adapters [MCGA] [VGA] ■ Source Module Name b101104d.asm ■ Description Provides the default 8x16 font table in text modes. ■ Summary VOID FPENTRY bvLoad8x16Font04( INT2 block ); Parameter Description ───────── ───────────────────────────────────────────────── block specifies the block of character generator RAM. ■ Remarks On a MCGA, a call to this function should be followed with a call to bvSetBlkSpec. ..page ..head03AbvLoad8x16Font14 ■ Display Adapters [MCGA] [VGA] ■ Source Module Name b101104d.asm ■ Description Provides the default 8x16 font table in text modes. ■ Summary VOID FPENTRY bvLoad8x16Font14( INT2 block ); Parameter Description ───────── ───────────────────────────────────────────────── block specifies the block of character generator RAM. ■ Remarks Page zero must be active and if this function is used at any other time than immediately after a set mode, the results will be unpredictable. If this function is used on an MCGA then the BIOS will execute the function bvLoad8x16Font04. ..page ..head03AbvLoad8x8Font02 ■ Display Adapters [EGA] [MCGA] [VGA] ■ Source Module Name b101102d.asm ■ Description Provides the default 8x8 font table in text modes. ■ Summary VOID FPENTRY bvLoad8x8Font02( INT2 block ); Parameter Description ───────── ───────────────────────────────────────────────── block specifies the block of character generator RAM. ■ Remarks On a MCGA, a call to this function should be followed with a call to bvSetBlkSpec. ..page ..head03AbvLoad8x8Font12 ■ Display Adapters [EGA] [MCGA] [VGA] ■ Source Module Name b101102d.asm ■ Description Provides the default 8x8 font table in text modes. ■ Summary VOID FPENTRY bvLoad8x8Font12( INT2 block ); Parameter Description ───────── ───────────────────────────────────────────────── block specifies the block of character generator RAM. ■ Remarks Page zero must be active and if this function is used at any other time than immediately after a set mode, the results will be unpredictable. If this function is used on an MCGA then the BIOS will execute the function bvLoad8x16Font02. ..page ..head03AbvLoadUsrFont00 ■ Display Adapters [EGA] [MCGA] [VGA] ■ Source Module Name b101100d.asm ■ Description Loads the users text font table into specified block of character generator RAM. ■ Summary VOID FPENTRY bvLoadUsrFont00( INT2 pts, INT2 block, UINT2 chcount, UINT2 startch, VOID *fonttbl ); Parameter Description ───────── ───────────────────────────────────────────────── pts bytes per character block specifies the block of character generator RAM. chcount characters in table startch first character in table fonttbl font table address ■ Remarks On a MCGA, a call to this function should be followed with a call to bvSetBlkSpec. ..page ..head03AbvLoadUsrFont10 ■ Display Adapters [EGA] [MCGA] [VGA] ■ Source Module Name b101100d.asm ■ Description Loads the users text font table into specified block of character generator RAM. ■ Summary VOID FPENTRY bvLoadUsrFont10( INT2 pts, INT2 block, UINT2 chcount, UINT2 startch, VOID *fonttbl ); Parameter Description ───────── ───────────────────────────────────────────────── pts bytes per character block specifies the block of character generator RAM. chcount characters in table startch first character in table fonttbl font table address ■ Remarks Page zero must be active and if this function is used at any other time than immediately after a set mode, the results will be unpredictable. If this function is used on an MCGA then the BIOS will execute the function bvLoadUsrFont00. ..page ..head03AbvReadCell ■ Display Adapters [MDA] [CGA] [PCjr] [EGA] [MCGA] [VGA] ■ Source Module Name b100800d.asm ■ Description Read the cell the cursor is positioned on for its character and attribute values. ■ Summary VOID FPENTRY bvReadCell( INT2 *ch, INT2 *attr, INT2 pg ); Parameter Description ───────── ───────────────────────────────────────────────── ch will contain the character of the cell. attr will contain the attribute value of the cell. pg the page the cell to read is on. ■ Remarks The page to read from does not have to be the active page, if the video display supports mulitple pages. ..page ..head03AbvReadPix ■ Display Adapters [MDA] [CGA] [PCjr] [EGA] [MCGA] [VGA] ■ Source Module Name b100d00d.asm ■ Description Read pixel from the specified graphics coordinates. ■ Summary INT2 FPENTRY bvReadPix( INT2 row, INT2 col, INT2 pg ); Parameter Description ───────── ───────────────────────────────────────────────── row row for pixel to be read from col col for pixel to be read from pg page to read pixel from ■ Function Return Value The pixel value at for the coordinates requested. ..page ..head03AbvScnRefresh ■ Display Adapters [VGA] ■ Source Module Name b101236d.asm ■ Description Enables or disables the video refresh for the currently active display. ■ Summary INT2 FPENTRY bvScnRefresh( INT2 setting ); Parameter Description ───────── ───────────────────────────────────────────────── setting 0 - enables refresh 1 - disable refresh ■ Function Return Value 12h is returned if this function is supported. ..page ..head03AbvScrollDn ■ Display Adapters [MDA] [CGA] [PCjr] [EGA] [MCGA] [VGA] ■ Source Module Name b1006xxd.asm ■ Description Scrolls the contents of the window on the active display page down by the specified number of lines. ■ Summary VOID FPENTRY bvScrollDn( INT2 top, INT2 left, INT2 bottom, INT2 right, INT2 lines, INT2 attr ); Parameter Description ───────── ───────────────────────────────────────────────── top top row of window left left column of window bottom bottom row of window right right column of window lines number of lines to scroll attr attribute to use for blanked area ■ Remarks If the number of lines to scroll is zero, the entire window will be blanked. ..page ..head03AbvScrollUp ■ Display Adapters [MDA] [CGA] [PCjr] [EGA] [MCGA] [VGA] ■ Source Module Name b1006xxd.asm ■ Description Scrolls the contents of the window on the active display page up by the specified number of lines. ■ Summary VOID FPENTRY bvScrollUp( INT2 top, INT2 left, INT2 bottom, INT2 right, INT2 lines, INT2 attr ); Parameter Description ───────── ───────────────────────────────────────────────── top top row of window left left column of window bottom bottom row of window right right column of window lines number of lines to scroll attr attribute to use for blanked area ■ Remarks If the number of lines to scroll is zero, the entire window will be blanked. ..page