Tseng Qtec VGA 1024, Руководство по установке

Страница: 99 / 123

AH 18 Return functionality/state information
Input:
BX=implementation type
ES:DI=buffer (40h bytes)
Output:
AL=lBh
Buffer, in the following format:
£set Type
Description
00
02
04
05
07
09
0B
IB
ID
IE
20
21
22
23
25
26
27
29
2A
2B
word Offset to static functionality information
word Segment to static functionality information
byte Video mode
word Number of columns on screen
word Length of regen buffer
word Start address of regen buffer (offset)
8*word Cursor position for 8 pages (row, column)
word Cursor mode setting (start, end)
byte Active page
word CRTC address
byte Current setting of 3x8 register (mode register)
byte Current setting of 3x9 register
byte Rows on screen
word Character height
byte Active display combination code
byte Alternate display combination code
word Colors supported for current video mode
byte Display pages supported for current video mode
byte Scan lines in current video mode
0=200
1=350
2=400
3=480
5=512 (Note: IBM reserves this)
6=600 (Note: IBM reserves this)
7-255=reserved
byte Primary character block
0=block 0
l=block 1
255=block 255
2C byte Secondary character block
-82-