Specifications

D:\D\inter61a\INTERRUP.A Saturday, January 08, 2011 11:31 AM

CH,CL = row,column of window's upper left corner

DH,DL = row,column of window's lower right corner

Return: nothing

Note: affects only the currently active page (see AH=05h)

BUGS: some implementations (including the original IBM PC) have a bug which

destroys BP

the Trident TVGA8900CL (BIOS dated 1992/9/8) clears DS to 0000h when

scrolling in an SVGA mode (800x600 or higher)

SeeAlso: AH=07h,AH=12h"Tandy 2000",AH=72h,AH=73h,AX=7F07h,INT 50/AX=0014h

--------V-1007-------------------------------

INT 10 - VIDEO - SCROLL DOWN WINDOW

AH = 07h

AL = number of lines by which to scroll down (00h=clear entire window)

BH = attribute used to write blank lines at top of window

CH,CL = row,column of window's upper left corner

DH,DL = row,column of window's lower right corner

Return: nothing

Note: affects only the currently active page (see AH=05h)

BUGS: some implementations (including the original IBM PC) have a bug which

destroys BP

the Trident TVGA8900CL (BIOS dated 1992/9/8) clears DS to 0000h when

scrolling in an SVGA mode (800x600 or higher)

SeeAlso: AH=06h,AH=12h"Tandy 2000",AH=72h,AH=73h,INT 50/AX=0014h

--------V-1008-------------------------------

INT 10 - VIDEO - READ CHARACTER AND ATTRIBUTE AT CURSOR POSITION

AH = 08h

BH = page number (00h to number of pages - 1) (see #00010)

Return: AH = character's attribute (text mode only) (see #00014)

AH = character's color (Tandy 2000 graphics mode only)

AL = character

Notes: for monochrome displays, a foreground of 1 with background 0 is

underlined

the blink bit may be reprogrammed to enable intense background colors

using AX=1003h or by programming the CRT controller

the foreground intensity bit (3) can be programmed to switch between

character sets A and B on EGA and VGA cards, thus enabling 512

simultaneous characters on screen. In this case the bit's usual

function (intensity) is regularly turned off.

in graphics modes, only characters drawn with white foreground pixels

are matched by the pattern-comparison routine

on the Tandy 2000, BH=FFh specifies that the current page should be

-55-

http://www.foxitsoftware.com For evaluation only.