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PROGRAMMING KEY MAKE/BREAK CODES
There are two scan codes assigned to each key, one for when the key is depressed (MAKE
code) and the other for when the key is released (BREAK code). Generally, all keys are
programmed to output both MAKE and BREAK codes. The SHIFT, CONTROL and ALTERNATE
keys are always programmed to output MAKE and BREAK codes so that the system can tell if the
key is being held down. Refer to Appendix D for a list of the scan codes associated with the
typical 101/102-key keyboard. Table 6 below summarizes the commands used to program key
MAKE/BREAK functions in the remote programming mode. Some typical examples of
MAKE/BREAK code programming are given following the table.
Table 6. Remote Programming Commands For Key MAKE/BREAK Codes
REMOTE
PROGRAMMING
COMMAND
DESCRIPTION
! Defines where the output of MAKE codes end and BREAK codes start. Prior to this
command, all codes are sent when the keys are pressed (MAKE codes). After this
command, all codes are sent when keys are released (BREAK codes).
@ Defines where repeating function of keys start. After this command, all keys repeat
code when keys are held down past repeat time.
# This command overrides PC settings for key. Key sends code as typed on BREAK.
$ This command overrides PC setting for repeat. Key sends code as typed on MAKE and
BREAK.
^ Defines the position of a Sec Op Key on the Series 500 Keyboard. Note that a Sec Op
Key must be defined on the Series 500 Keyboard to enable programming of secondary-
level key codes.
& Defines the position of a Sec Op Lock Key on the Series 500 Keyboard.
( Used to define left SHIFT key MAKE code.
) Used to define left SHIFT key BREAK code
[ Used to define left CONTROL key MAKE code.
] Used to Define left CONTROL key BREAK code.
{ Used to define left ALTERNATE key MAKE code.
} Used to define left ALTERNATE key BREAK code.
- Shorthand for BREAK code of previous CxDx key.
CyDx Key number for hex code of xy is xy in range 00 to 7F.