Here are some links to help illustrate which parts of the 6502 are which:

Registers:
- Y
- X
- S
- A
- Program Counter

ALU and Decimal adjust:
- ALU
- Decimal Adjust

Predecode and Instruction Register:
- Predecode
- IR

Input Data Latches:
- ID

- PLA (decode ROM)
- Timing Control

Another way to find your way around is to search for and highlight specific signals, for example, highlighting the two inputs and the output of bit 0 of the ALU:
- find=alua0,alub0,alu0

More tips on the help page at
http://visual6502.org/wiki/index.php?ti ... _interface

Here are all the above labels at once: