AMIGA 500 PS/2 KEYBOARD ADAPTER

This is a tested and working circuit.

Do not be sad if your Amiga 500 keyboard is not working. AMIGA 500 PS/2 KEYBOARD ADAPTER will help you to use your Amiga 500 with your PS/2 or IBM-AT type keyboard.

This keyboard adapter also have a Reset function with 3 keys. (left windows + right windows + CTRL)

This circuit does not support all of the USB keyboards, but some of USB keyboards may work with a simple, cheap "USB to PS/2" converter.

To make this circuit you need to download .hex file and program it into AT89C2051.

AT89C2051 HEX file download link is at the bottom of this page

COMPONENTS:

AT89C2051-24PU

2PCS. 1μF capacitors

2PCS. 33pF capacitors

11.0592 MHz Passive Quartz Crystal

2 x 8 PIN FEMALE HEADER

6 PIN MINI DIN SOCKET PS/2 FEMALE CONNECTOR - PCB Type

Some Amiga 500 mainboards keyboard connector pins order can be different, if adapter does not work at position "A" then please try position "B".

For referal please look at the images.

14.10.2020: GERBER files updated.

Optional "6pin female PCB type mini DIN connector" added.

Thanks to Martin Clausen for this project.

Gerber files can be changed at any time. Before paying for the PCBs, be sure to update your orders!

Have Fun

Thank you.