Specifications

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

1Bh WORD cursor "type" (start/stop scan lines)

1Dh BYTE active display page

1Eh WORD CRTC port address

20h BYTE current setting of PORT 03x8h

21h BYTE current setting of PORT 03x9h

22h BYTE number of rows - 1

23h WORD bytes/character

25h BYTE display combination code of active display

26h BYTE DCC of alternate display

27h WORD number of colors supported in current mode (0000h = mono)

29h BYTE number of pages supported in current mode

2Ah BYTE number of scan lines active

(0,1,2,3) = (200,350,400,480)

Tseng ET3000: (4,5,6 = 512,600,768)

2Bh BYTE primary character block

2Ch BYTE secondary character block

2Dh BYTE miscellaneous flags (see #00041)

2Eh BYTE non-VGA mode support (see #00042)

2Fh 2 BYTEs reserved (00h)

31h BYTE video memory available

00h = 64K, 01h = 128K, 02h = 192K, 03h = 256K

32h BYTE save pointer state flags (see #00043)

33h BYTE display information and status (see #00044)

34h 12 BYTEs reserved (00h)

Bitfields for miscellaneous flags:

Bit(s) Description (Table 00041)

0 all modes on all displays on

1 gray summing on

2 monochrome display attached

3 default palette loading disabled

4 cursor emulation enabled

5 0 = intensity; 1 = blinking

6 flat-panel display is active

7 unused (0)

SeeAlso: #00040

Bitfields for non-VGA mode support:

Bit(s) Description (Table 00042)

7-5 reserved

4 132-column mode supported

-98-

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