@iz8dwf
  @iz8dwf
iz8dwf | MOS 8701 modern replacement @iz8dwf | Uploaded April 2017 | Updated October 2024, 1 hour ago.
Testing a drop-in replacement for the MOS8701 clock generator chip used in the some C64 revisions.
Thanks to LFT's blog, I've decided to use a particular IC that I first thought wasn't suitable for the task.
I have used one of the best C64 demo, Lunatico by LFT himself, as part of the test programs that I ran to validate the replacement.


The schematic of this replacement board is here:
drive.google.com/open?id=1kO8Xfh3bO80GLJ2h4s9OomnjELC5nc-R
MOS 8701 modern replacementVIC-20 black screen repair. Bad Basic ROMCinematronics arcade clones repair. Pt.2: Vectorbeam eliminatorpiezo contact pickup preamplifier first testAtari Asteroids Arcade PCB repair. Only (almost) PCB issues.The DEC VT05 computer terminal pt. 1. A short introductionFrom the project to the gadget: making a small PCB.Troubleshooting Commodore 64 RAM with piggybacking methodMaking a vector monitor Pt. 5: cathode driver & spot killer plus final tuning.The 82S100 PLA and its Soviet clone. Lets make a NOS C64 PLA.Solartron/Enertec 7151 multimeter repair pt. 1. Scrap or repair?C64 (C64C) repair. Cooling a freezing CPU :)

MOS 8701 modern replacement @iz8dwf

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