AH = 12h
% BL = 10 return video configuration information
on return:
BH = 0 if color mode in effect
= 1 if mono mode in effect
BL = 0 if 64k EGA memory
= 1 if 128k EGA memory
= 2 if 192k EGA memory
= 3 if 256k EGA memory
CH = feature bits
CL = switch settings
% BL = 20 select alternate print screen routine
% BL = 30 select scan lines for alphanumeric modes
AL = 0 200 scan lines
= 1 350 scan lines
= 2 400 scan lines
on return:
AL = 12
% BL = 31 select default palette loading
AL = 0 enable default palette loading
= 1 disable default palette loading
on return:
AL = 12
% BL = 32 CPU access to video RAM
AL = 0 enable CPU access to video RAM and I/O ports
= 1 disable CPU access to video RAM and I/O ports
on return:
AL = 12
% BL = 33 Gray scale summing
AL = 0 enable gray scale summing
= 2 disable gray scale summing
on return:
AL = 12
% BL = 34 cursor emulation
AL = 0 enable cursor emulation
= 1 disable cursor emulation
on return:
AL = 12
% BL = 35 PS/2 video display switching
AL = 0 initial adapter video off
= 1 initial planar video on
= 2 switch active video off
= 3 switch inactive video on
ES:DX pointer to 128 byte save area (when AL = 0, 2 or 3)
on return:
AL = 12
% BL = 36 video refresh control
AL = 0 enable refresh
= 1 disable refresh
on return:
AL = 12
| Zurück zum Interrupt Info. | Roger Morgan / 1998 | L.Änderung 29.03.99 |