Wired && Coded;

In X65 the assembled CPU is either the 8-bit W65C02S or 16-bit W65C816S. The W65C816S is (partially) compatible with W65C02S. This page summarizes the differences from the low-level hardware point of view and in the case that the 65C816 is… Continue Reading →

This document discusses the FM sound synthesis in the Commander X16 and in my x65 computer. Sound in Commander X16 Sound in Commander X16 is generated by two sources that are mixed together:   1) by the Programmable Sound Generator… Continue Reading →

SNES Controllers typically look like this: SNES controller is a cheap and easy way how to add a joystick interface to a DIY project. One controller can be cheaply had from aliexpress or similar for around 2 USD. The controller… Continue Reading →

The Open-X65 GIT repository is now public: https://github.com/jsyk/x65 Note: this is not a release! The project is very much a work-in-progress. You have been warned 😉

My Open-X65 project achieved a milestone: the unmodified X16 ROM can be loaded and runs! I manually typed in a BASIC maze program, which draws some ASCI graphics:

Since the first post a lot of happened:

I am starting a new hobby project called X65: I intend to create an open-source computer based on the “vintage” 6502 processor, which is still in production as the W65C02. The original 6502 was used in many home personal computers… Continue Reading →