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PST-1000 series Technical Manual 5 - 26

to transfer a file “XXX.tpl”, which was saved before, to the programmable keyboard,

he/she should type in following command in subdirectory “POSIFLEX.D”:

RWM XXX.tpl (enter)

This operation is quite recommended to be performed on a daily basis to

ensure the system stability.

On the other hand, when the user wants to save the contents of a programmed

keyboard, e.g. when he/she newly receives a programmable keyboard, to a file named

“YYY.tpl”, he/she should type in following command in subdirectory

“POSIFLEX.D”:

RWM -r YYY.tpl (enter)

HARDWARE LIMITATION

In the programmable keyboard, the detection of each key press is achieved

through the use of combination of “Logical columns” and “Logical rows”. For any key

pressed, the “Logical column” of that key is connected to the “Logical row” of the

same key by hardware, the CPU of the programmable keyboard detects such

connection and determines that which key has been pressed. However, in the case of

multiple simultaneous key-press, there are limitations on the position of the keys

selected. The basic rule of such limitations is:

No two keys in the combination are

allowed to be in the same “Logical row”.

The reason is that when any two keys of the same “Logical row” are pressed in

the same time, then there will be two “Logical columns” connected together through

that involved “Logical row”, causing some difficulties by its nature in identifying

which key is pressed. To overcome such problem, the output of the programmable

keyboard when the above rule is violated could be prohibited.

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Mustek PP3000 Spécifications Page 54