Hi,
Windows XP will let you connect a PS2 and a USB keyboard at the same time.
Connect a sandard PS2 keyboard and connect your device as USB keyboard.
(XP will see them as one keyboard).
There is no need to write special software on the PC
if Windows XP sees your device as USB keyboard.
See this link:
http://www.mecanique.co.uk/products/usb/easyhid.html
* * *
Also possible with Windows XP
SerialKeys: Use an Alternative Input Device Instead of a Keyboard or Mouse
SerialKeys is accessibility feature designed for people who have difficulty using the computer's standard keyboard or mouse. SerialKeys provides support so that alternative input devices, such as single switch or puff and sip devices can be plugged into the computer's serial port.
https://www.microsoft.com/windowsxp/...erialkeys.mspx
How to Set Up and Use SerialKeys in Windows:
http://support.microsoft.com/?kbid=260517
Best regards,
Luciano
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