I've seen some simulators that include some MCU like i85xx and PIC16 models, so complete HW and SW projects can be designed.

Electronics can be thrown to a schematic and code written to the MCU, so a complete representation of the circuit and how it behaves can be seen.

Is there such a tool for the 65xx?

Thanks all.

I will answer my self:

• 65816 Logisim Project thread.
• Solra Bizna's 6502 Logisim, as mentioned in that thread.
• Kara Abdelaziz's LS6502 logisim project, found while searching for this.

(well done! that should be useful for future adventurers)