Chapter 4: Programming
Firmware
USB DynaKey Capabilities
The NCR USB DynaKey is a multifunction device comprised of several functions, including a keyboard switch matrix and a speaker. Both of these functions are controlled by a single field programmable gate array (FPGA).
The keyboard matrix translates between a key switch physical location and the key data reported to the host PC. This matrix is programmable. The matrix may be replaced in whole or in part, permitting any key to be mapped to any function.
The FPGA has the ability to sound a short chirp whenever a key is pressed, providing auditory feedback to an operator of the keyboard. This auditory feedback is optional. The FPGA may be configured to make the sound or not to make the sound, depending on the particular application.
The FPGA has no static memory and thus cannot retain any settings after power loss. Thus, each time the system to which this keyboard is connected is
The keyboard firmware is standard USB compatible keyboard firmware with added extensions for
The keyboard supports the following minimum standard PC keyboard capabilities:
•System Reset
