Proyects
In this section I'll talk about my personal projects about videogame systems.
PC PS2 mouse to SNES adaptor
This circuit is intended to make a standar PC PS2 mouse run in a SNES system, as if it was an original SNES mouse. Of course, only 2 buttons are used, as there were no more on Nintendo's mouse.
Megadrive/Genesis Expansion Port add-on
This project is quite more ambicious. It is a whole development project for Megadrive/Genesis.
First of all, it consists of a circuit interface with an onboard BIOS and IDE interface, that hooks up to the system's expansion port. When power-up, a BIOS is loaded, and it gives you the following functionalities:
* Transfer data between Megadrive/Genesis and PC using a parallel port cable. A PC software is avaiable to do this. One of the things you can do is read and write cart's SRAM (savegames) and dump original carts (up to 2Mb ROMs so far). You can also send homebrew code or data to console's RAM.
* Interface an IDE hard disk or Compact Flash card, load games to a rewritable cart, and play them. I developed a whole new filesystem for the purpose, and it supports games of up to 650 ROMs of up to 4Mbytes per drive.
* Flash onboard BIOS sending the new BIOS trough the PC cable, from the computer.
So far, only Flash ROM (29F0x0 and 29Fx00) is supported for rewritable carts and onboard BIOS.
