iz8dwf | 8 bit troubleshooting tools: The NOP generator @iz8dwf | Uploaded February 2020 | Updated October 2024, 5 minutes ago.
This video scratches the surface on 8-bit MPUs "NOP generators" as a general troubleshooting tool.
How to make simple socket adapters for the MOS6502 and Zilog Z80 processors.

What you can check on a malfunctioning board when a NOP generator is installed.
Why isn't possible to make a NOP generator for the MOS6510/8500 (and the very similar 7501/8501).


Adrian Digital Basement video on 1541C repair using a NOP generator:
youtube.com/watch?v=-gDKl15WYuc


Programming the 6502 by R. Zaks:
archive.org/details/Programming_the_6502_OCR/mode/2up


Programming the Z80 by R. Zaks:
archive.org/details/Programming_the_Z-80_2nd_Edition_1980_Rodnay_Zaks/mode/2up