INT 10h,  15h (21)       Return Physical Display Characteristics  Convertible

Returns the alternate display adapter type and a table describing the
characteristics of the current display. This service is available only
for the PC Convertible.

On entry:      AH         15h

Returns:       AX         Alternate display adapter type
00h   - No alternate adapter
5140h - LCD
5153h - CGA type display
5151h - Monochrome type display
ES:DI      Pointer to 7-word Current display adapter
table (See below)

                                                                          

Notes:         The format of the display adapter table is as
follows:

Word 1 - Display model number
Word 2 - Vertical PELs per meter
Word 3 - Horizontal PELs per meter
Word 4 - Total number of vertical PELs
Word 5 - Total number of horizontal PELs
Word 6 - Height of PEL in micrometers (vertical
direction)
Word 7 - Width of PEL in micrometers  (horizontal
direction)

                                                                          
            PC Convertible Display Adapter Tables

Word     Monochrome    CGA          LCD (CGA)       LCD (Monochrome)
1        5151h      5153h           5140h               5140h
2          0        0498h           08E1h                  0
3          0        0A15h           0987h                  0
4          0        00C8h           00C8h                  0
5          0        0280h           0280h                  0
6          0        0352h           0172h                  0
7          0        0184h           0172h                  0

Note that the PC Convertible Technical Reference Manual incorrectly
documents words 6 and 7 for an LCD acting as a CGA. The correct values
are listed above.

See also: INT 10h, 14h

INT 10h, 15h (21) Return Physical Display Characteristics Convertible