I've bought A600 4MB Fast RAM expansion with pre-programmed CPLD and without LED. I've obtained the RAM chips from local auction portal. Soldered everything and put to my A600. Initially I've got orange screen, but I soon revealed that the expansion is not well fitting the CPU. I carefully observed the photos in the offer to determine that top socket edges and bottom limiter must be trimmed and in addition extra trim is required for the resistor near the CPU - this is the only hack this kit requires. I've trimmed the socket in few minutes, installed again, and it works! Great! Thank you for that kit!
The item arrived two days after shipping. All parts work well and are consistent with the github page about this design. It works very good (very low response time) and will save my C64 if need be (and save my mental health in doing so). Thank you for making it easy for everyone. I will recommend your designs to others.
Works fine. I used RAM Chips like TMS 418160DZ and also NEC4218160-60, SEC KM 416C1200AJ-7. Only the PLCC68 socket was not so good and i must degrate it.
Response from SukkoPera's Retro Works | June 24, 2019
Thanks for your review, Ronald. I'll add those chips to the compatibility list. I'm sorry the socket did not work your you, actually I find those are pretty good and grip to the CPU very tightly, provided that you don't plug/unplug them too many times. Did you file it a bit so that it doesn't get in the way of R102?