Pro-face PL-5900 Series, Руководство пользователя

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Chapter 6 - Setting Up Your PL OS
PL-5900 Series User Manual
6-23
The following data details each function.
Function 00h Key input data read
Reads the input key data.
Input AH= 00hA
Output AL= Primary code (character code)
AH= Secondary code (scan code)
Function 01h Key input data check
Detects the data in the keyboard buffer.
Input AH= 01h
Output ZF= 0: Readable data in the keyboard buffer.
1: No readable data in the keyboard buffer.
AL= Primary code (character code)
AH= Secondary code (scan code)
Function 02h Shift status read
Returns the status information of the special keys.
Input AH= 02h
Output AL= Shift status
Bit 7: Insert key
Bit 6: Caps Lock key
Bit 5: Num Lock key
Bit 4: Scroll Lock key
Bit 3: Alt key
Bit 2: Ctrl key
Bit 1: Shift Left key
Bit 0: Shift Right key
Function 05h The key-in data writing
Writes the data for the CX register settings to the keyboard buffer as input from
the keyboard
Input AH= 05h
CL= Primary code (character code)
CH= Secondary code (scan code)
Output AL= Status
0: Successfully completed
1: Aborted
(No available space in the keyboard buffer.)