Hi, I am new to the 6502 processor and want to know where to start with it. I am trying to undersand how it works and want to be able to write programmes for it such as additions, subtractions, squares, counting the number of negative numbers present etc. for single and multiple bit numbers. Please could you tell me where to find out this information or how to do these? Thankyou. Nick

http://westerndesigncenter.com/wdc/data ... manual.pdf

This is a great introduction to the 6502, 65802, and 65816 processors. Before doing anything else at all with them, you should read this.

The best way to learn about the 6502 is to look at the data sheet for the Western Design Centers 65c02 processor and what the 6502 processor was used in. For example: Apple-1, Apple ][, Atari 2600, etc.

Western Design Center website: http://www.westerndesigncenter.com/wdc/

You'll find a lot of information all over the internet, but I'm not sure where the information is presented in the most concise manner.

There were several books on the 6502 and some that were quite good, they will still be in some libraries but I expect most would be out of print.

Here's a place that I judge to be a decent introduction to the 6502 but it's not a course so it goes pretty fast in sections.

http://www.obelisk.demon.co.uk/6502/

A site that has a lot of good 6502 code but a lot of it is C64 oriented and you have to wade through a lot of discussion and unimportant information.

http://www.ffd2.com/fridge/

I haven't tried this yet but if it's decent it will be a good way to experiment.

http://sourceforge.net/projects/sim6502net/


Also, you could also post questions here on this forum!

Good luck!

!!!