Toni Westbrook dot Com

Sharing Software Development Knowledge With You

Firmware (v 1.0) for the PSX64 is now available here. This version supports improved analog stick functionality, second button support for the Amiga and Sega Master System, and improved macro handling.

For those wanting to build the PSX64 interface, the schematics are now online. The plans include an ICSP port for uploading firmware to the Atmega 8 MCU. Please note, these plans assume the DIP package version of the Atmega 8 - the pinout is different for the surface mount packages. Firmware will be online within the next day or two.

If you don't have any kind of Atmel programmer, you can build a really cheap parallel programmer using these plans. It works like a champ for programming the Atmega8.

I needed to incorporate a few safety features into the final (for now) revision of the PSX64 design, so while I was changing hardware around, I decided to add support for the second button on Amiga and Sega systems which required more than just a firmware change (I needed to share pin 9 with both the second digital pot and a direct mapping into the MCU, so now in guitar mode the digital pot takes control of pin 9 and the MCU goes into high impedance on that pin, and vice versa when in normal controller mode.)

I tested it out with a little Mortal Kombat II on my A1200. Button one is mapped over to X, and button two is mapped over to square. Both kicking and punching worked great in MKII! I'll be putting the schematics of this final version up tonight/tomorrow. Back to the PCB printers again!