Break; The Numeric Pad; The Special Function Keys - LSI M-Three Operator's Manual

3.2.6 BREAK:- This is a Special Function key in that it
generates a code outside of the ASCII range. When the
Main Control Unit receives this code, the appropriate
function (which will be dependant on the resident soft-
ware) will be executed.
3.3 THE NUMERIC PAD
The Numeric Pad is an l1-way key cluster to the right of the
'OWE RTY' Cluster. These keys will cause the same ASCII codes to
be generated as the numeric keys within the 'OWE RTY' Cluster but
are separated from it to facilitate fast data entry. In addition, the
'5' key of the Numeric Pad has a raised 'pip' in its centre to allow
'touch-keying'.
3.4 THE SPECIAL FUNCTION KEYS
These keys are make up from the 12-way keypad to the right of the
Numeric Pad and the row of 24 keys at the top of the keyboard.
The function of each of these keys, as with the BREAK key in the
'QWERTY' Cluster, is entirely software dependant and can be
assigned the required code or code sequence with the utility soft-
ware program PROG (see 6.6).
The 24 Special Function keys at the top of the keyboard are each
capable of generating two separate codes or code sequences; one
code, or code sequence, for a normal key depression and one when
the key is depressed in conjunction with the Shift key.
N.B. Although all of the keys on the keyboard are 'Typematic'
(they will 'repeat' if they are held down for more than 0.5 secs.),
there is a REPEAT key which, if depressed with any character key,
will cause it to repeat immediately at approximately 3 times a
second.
For specific keyboard operations, see either The Operating System
section
(5)
or the appropriate Operating System handbook.
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