Int 10 Fn 7000  - Everex Extended Video BIOS - Return Emulation Status     [V]

   AX = 7000h
   BX = 0000h

Return: AL = 70h if Trident-based Everex card
   CL = monitor type (see below)
   CH = feature bits (see below)
   DX = video board info
       bits 4-15: board ID model
       bits 0-3:  board ID revision
   DI = BCD BIOS version number

Note:  board models for Trident-based Everex cards:
       236h Ultragraphics II
       620h Vision VGA
       673h EVGA
       678h Viewpoint

See Also: AX=5F01h,AH=FF"Oak"

Values for monitor type:
 00h   mono
 01h   CGA
 02h   EGA
 03h   digital multifrequency
 04h   IBM PS/2
 05h   IBM 8514
 06h   SuperVGA
 07h   analog multifrequency
 08h   super multifrequency

Bitfields for feature bits:
 bits 7,6  memory size
   00 = 256K
   01 = 512K
   10 = 1024K
   11 = 2048K
 bit 5 special oscillator present
 bit 4 VGA protect enabled
 bit 0 6845 emulation