#6502

My 6502 project in a PC104 like formfactor

A 6502 based laptop design

To learn basic assembly programming concept, having a simple system is more important than having a powerful one.

The Sorbus Computer started with the idea on building a very simple and cheap 65C02 based computer. It was intended to show the operation of the CPU for a talk about historic computers during a talk and workshop (slides blow).

The attempt to build a very simple 65C02 based computer by utilizing a Raspberry Pi Pico clone for the rest of the functionality.

while doing my daily hackaday.com reading, I discovered the W65C265SXB board, a modern microcontroller with a 6502 (actually 65C816) at its core. I did a really good job resisting buying one for a while, but eventually gave in. To put this board to use I decided to put up this page with 3 small projects (added a 4th more recently) to show off some things that can be done with this newer 6502 chip

In this article, I'm going to try to work out exactly how 6502 Elite was developed over the years, by looking for clues in the original source code and digging through the game binaries. Software archaeology, here we come...

Since this computer uses a CPU that is about 45 years old, it cannot compete at all with today's computers in terms of performance. However, I wanted the PERSEUS-8 to have functions and appearance that would remind us of concepts that today's computers has lost.

In these tutorials we'll start from the absolute basics... and teach you to become a multiplatform 6502 monster!... Let's begin!

In these tutorials we'll start from the absolute basics... and teach you to become a multiplatform 6502 monster!... Let's begin!

You had to bang your ideas around, twist them, turn them, searching for something, anything that would help you squeeze them into the machine. Sometimes you found it, and you got one step closer to realizing your ideas. Sometimes you didn’t.

When it came time to try out some old-school computing [Quinn Dunki] grabbed a 6502 processor and got to work. For those that are unfamiliar, this is the first chip that was both powerful, affordable, and available to the hobby computing market back in the 1970′s. They were used in Apple computers, Commodore 64, and a slew of other hardware.

"; My intent in overhauling this classic disassembly is to finish it ; so that the purpose of every instruction, memory location, and ; table is made completely clear. "

"The original NMOS version of the MOS 6502, used in computers like the Commodore 64, the Apple II and the Nintendo Entertainment System (NES), is well-known for its illegal opcodes: Out of 256 possible opcodes, 151 are defined by the architecture, but many of the remaining 105 undefined opcodes do useful things."

"Do not be intimidated by the prospect of over 16,000 user-defined instructions. Instead, welcome the ability to microprogram any or all of your favorite machine architectures into the virtual machine now available."

"The main purpose for this web site is to produce legal future reference for those people who would like to be involved with assembly programming side of the C64 scene."

This makes me want to fire up my C64 again. That or take this and my laptop and travel back to 1984

"6502 compatible compiler and emulator in javascript "