Int 16H, Keyboard Handler; Use; Entry; Exit - Husky MP2500 Manual

27. INT 16H, Keyboard Handler

Use

Keyboard input and status.

Entry

AH selects the function required, as follows.

Exit

The AX register returns results as shown in the following descriptions. All
other registers are preserved. The flags are corrupted.

Comments

The IBM PC BIOS provides the following functions:
00H Get key
01H Get status
02H Get shift status
03H Set key repeat
The MP2500 BIOS provides these functions and also supports a number of
extensions, providing access to the following facilities:
20H Set temporary shift
21H Control shift keys
22H Control Ctrl-Alt-Del
23H Control emergency breakout
24H Redefine key codes
25H Reset keyboard
26H Control keyclick
27H Reserved
28H Reserved
29H Get key repeat
2AH Control key repeat
Chapter 27: INT 16H, Keyboard Handler
05H Write to keyboard buffer
10H Extended read keystroke
11H Get extended status
12H Get extended shift status
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