I am looking for a definitive reference for the CMOS 6502.

I know there is not "one" CMOS 6502, so more accurately, I am looking for a reference on non-NMOS versions of the 6502.

Before anybody suggests the WDC Programming the 65816, I have several problems with that book:

* I am not interested in the 65816 at this time and 65816 material adds significant "noise" when seeking only CMOS/NMOS 6502 information

* There are some glaring errors such as



** 65C02 does not offer 16-bit accumulator, right?

** That should be m=0, right?

under the description of the TRB instruction

* There have been several revisions. The WDC web site does not offer the latest for download as a PDF

Is it true there are three general categories of the CMOS 6502?

* common 65C02 with new instructions and addressing modes along with bug fixes

* Rockwell adds bit test, clear and reset instructions (proper superset of common)

* WDC adds a few more instructions, but specifically excludes Rockwell bit instructions (proper superset of common)

_________________
http://WilsonMinesCo.com/ lots of 6502 resources
The "second front page" is http://wilsonminesco.com/links.html .
What's an additional VIA among friends, anyhow?

OK, I see that now.

It is better explained in Appendix C. The Rockwell instructions are not listed in with the big instruction summary. That is partially what I meant by 65816 noise.

This previous thread might have useful pointers:
65C02 instruction sets



Perhaps see also