SECTION 6
Conversions and Interfaces
6-76 PEN*KEY
R
6100 Computer Programmer’s Reference Guide
INT 15h, Function AH = 4Fh: Translate Keyboard Scan Code
4000API
Invoked by the keyboard interrupt (INT 09h) handler to allow a user routine to
translate the raw keyboard scan code. These scan codes are not PCĆcompatible.
Refer to the topic on keyboard scan codes in the
Standard Keyboard Interface
paragraph on page 6Ć35 in this section.
On Entry:
AH = 4Fh
AL = Original scan code
Carry = Set
On Return:
AL = Original or modified scan code
Carry = Set means to post the key value
Reset forces the keyboard interrupt routine to ignore the key
INT 15h, Function AH = 4Fh: Keyboard Intercept
BIOS
Called by INT 09h ISR each time a key is pressed. It creates alternate keyboard
layouts. Scan codes may be substituted or discarded by the intercept routine.
The default BIOS routine returns the input scan code unmodified and carry set.
Applications can call INT 15h, Function C0h to determine whether this feature
is supported by the BIOS.
On Entry:
AH = 4Fh
AL = Scan code
On Return:
AL = Scan code
Carry = 0 = Scan code processed, does not buffer scan code
1 = Scan code not processed, does buffer the scan code
6. Conversions and
Interfaces
Содержание PEN*KEY 6100
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