KB3200 Series User’s Manual
4 - 5
programming with the locations coded as “KLP”, “KL0”, “KL1”,
“KL2”, “KL3” and “KL4” in the key-layout map of page L1. The
programmable keyboard will issue an answer back code to PC whenever
the 6 position electronic key is switched to a new position or when the
keyboard receives an “enquiry” code (E7h) from the host computer
system. A time delay as determined in the configuration of the keyboard
programming utility is adjustable by “r” and “t” key presses, this time
delay is useful to give only the answer back code of the last position of
control key when it is turned across several positions. Here are some
examples of sending this “enquiry” code in different languages:
Language
Syntax
C
outp (0x60, 0xE7)
BASIC
out &H60, &H0E7
DEBUG
o 60 E7
3. HARDWARE LIMITATION
In case of “multiple combination key” application which means
pressing three or more keys at the same time to obtain certain data output
from the keyboard, there could be some limitations inherent from the
nature of keyboard structure. The CPU of keyboard detects the contact
between the “horizontal” and “vertical” lines for each key press,
recognizes which key is pressed and sends correspondent data to the host
computer. When there are many keys pressed at the same time, and the
pattern of the contacts coincides with some special relationship, there are
chances that the CPU of keyboard be confused about exactly which keys
are pressed. The user may change the locations of the key-definition to
prevent this once such confusion happens.
C. PROGRAMMING UTILITY (KBW.EXE)
This utility programs the programmable keyboard as KBM.EXE
does but using Windows application interface. Please use on - line help
to program the programmable keyboard.
