I added WDC extensions for the W65C02(S) to the 6502 instruction set page (and the Rockwell extensions, separately).
As we all know, WDC datasheets are, well, quite a mess (I think, this is the correct philosophical term 
) â so corrections are welcome.
PS:
- See the âWDC extensions (65C02)â option for the instruction table
- and https://masswerk.at/6502/6502_instruction_set.html#WDC,
- as well as https://masswerk.at/6502/6502_instruction_set.html#Rockwell.