Introduction

A Teensy-based project to adapt XT, AT, PS/2 and some 122-key terminal keyboards to USB, also known simply as "Soarer's Converter".

Features

Keyboard protocols supported:

• PC/XT (scan code set 1)
• AT (scan code set 2)
• PS/2 (MF2) (extended scan code set 2)
• Terminal e.g. 3179/318x/319x (scan code set 3)

Configurable Features: v0.997+

• Remapping
• Layers
• Macros
• On-the fly Config Selection

Other Features:

• Full NKRO, if the keyboard supports it (even on Macs!)
• Boot mode support (even with faulty BIOS!)
• Auto-detection of the keyboard type
• XT and AT boards are remapped correctly for PrtSc etc.
• 1000Hz polling using Full Speed USB
• Media and Power key support
• Jump to bootloader function (update firmware without pressing the reset button) v1.0+
• Support for 'almost' PC/XT protocol keyboards, e.g. Leading Edge DC-2014 v1.1+
• Keyboard Reset output (required by some PC/XT keyboards) v1.1+
• Five auxiliary key inputs (for extra keys, buttons, or footswitches) v1.1+
• Support for IBM RT keyboards v1.11+

Award!

Origins

Way back in 2010, a Teensy landed on my doormat.

My goal then was simply "to make a USB adapter for my AT model F".

Why? I had modified the keyboard, and existing PS/2 to USB adapters didn't support the unusual codes created by the extra key positions.

A few months later, the first release was made available on geekhack, in my project thread.

On the release of v1.0, I also made it available on Deskthority.

I guess I got a little carried away :-)