INT 16h,  11h (17)       Extended Keyboard Status                        many

Checks to see if a character is available in the buffer. This service
is provided to support the extended keyboard (101/102-key keyboard).

On entry:      AH         11h

Returns:       Zero       0, if character is available
1, if character is not available

AX         If character is available, then set to
character as in Service 10h

                                                                          

Notes:         This service is supported only on the AT dated
11/15/85 and after, the XT dated 1/10/86 and after,
and the XT-286.

If a character is available, the Zero Flag is
cleared and AX contains the ASCII value in AL and
the scan code in AH. The character is not removed
from the buffer. Use Service 10h to remove the
character from the buffer. See Service 10h for a
complete description of the meaning of AX if a
character is available.

This service is excellent for clearing the keyboard
or allowing a program to be interruptable by a
specific key sequence.

See Service 01h for an equivalent service that works
with all keyboards, not supporting the new keys on
the enhanced (101/102-key) keyboard.

See also: INT 16h, 01h
See also: INT 16h, 10h
See also: Scan Codes

INT 16h, 11h (17) Extended Keyboard Status many