Specifications

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

SeeAlso: #00048,#00186

--------V-104F05-----------------------------

INT 10 - VESA SuperVGA BIOS - CPU VIDEO MEMORY CONTROL

AX = 4F05h

BH = subfunction

00h select video memory window

DX = window address in video memory (in granularity units)

01h get video memory window

Return: DX = window address in video memory (in gran. units)

BL = window number

00h window A

01h window B

ES = selector for memory-mapped registers (VBE 2.0+, when called from

32-bit protected mode)

Return: AL = 4Fh if function supported

AH = status

00h successful

01h failed

Note: when using an accelerated video mode under VBE/AF v1.0P, the

application must call EnableDirectAccess before switching banks if

bit 9 of the video mode attributes flag is set (see #00080)

BUG: Phoenix S3 Trio64V+ v1.02-02 reportedly returns garbage in DX for

subfunction 01h

SeeAlso: AX=4F01h,AX=4F06h,AX=4F07h,AX=7000h/BX=0004h

--------V-104F06-----------------------------

INT 10 - VESA SuperVGA BIOS v1.1+ - GET/SET LOGICAL SCAN LINE LENGTH (PIXELS)

AX = 4F06h

BL = subfunction

00h set scan line length

CX = desired width in pixels

01h get scan line length

Return: AL = 4Fh if function supported

AH = status

00h successful

01h failed

BX = bytes per scan line

CX = number of pixels per scan line

DX = maximum number of scan lines

Notes: if the desired width is not achievable, the next larger width will be

set

the scan line may be wider than the visible area of the screen

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