Responses To Interrupt 16H - Zenith Z-100 Reference Manual

Table 5.1. Responses to Interrupt 16H
OPERATION
CODE CONDITION
Character Entered
Character
Not Entered
Character Entered
Character
Not Entered
Right SHIFT key
Left SHIFT key
CI'RL key
ALT key
SCROLL LCK active
NUM LCK active
CAPS LOCK active
INS active
RESPONSE
ASCII code will be in register AL.
Scan code will be in register AH.
C haracter i s r e moved f r o m the
keyboard buffer.
P rocessing will halt until a
pressed.
The response will then be as when a
key was entered.
The 0 flag will be false.
AL will contain the ASCII code.
AH will contain the scan code.
Character will remain in the keyboard
buffer.
The 0 flag will be true.
Returns the status of the special func-
tion keys in register AL.
Register is bit-mapped with bits that are
set indicating which keys are pressed
or which modes are adive.
Bit 0 set
Bit I set
Bit 2 set
Bit 3 set
Bit 4 set
Bit 5 set
Bit 6 set
Bit 7 set
page 5.3
Keyboard
k e y i s