I know a lot about these chips and learned something new:
There is a single cycle NOP on the 65C02! Spiffy!
---Excerpt Below---
There aren't really any undocumented instructions on the 65C02--any instructions not listed above are documented as performing no operation.
However, these alternate NOPs are not created equal. Some have one- or two-byte operands (which they don't do anything with), and they take different amounts of time to execute.
I know a lot about these chips and learned something new:
There is a single cycle NOP on the 65C02! Spiffy!
---Excerpt Below---
There aren't really any undocumented instructions on the 65C02--any instructions not listed above are documented as performing no operation.
However, these alternate NOPs are not created equal. Some have one- or two-byte operands (which they don't do anything with), and they take different amounts of time to execute.
Instruction Bytes Cycles