The product is a compact Kernal ROM replacement for the Commodore 64 computer (breadbin version).The design is based on the ATMEL 28C64B-15U EEPROM.
Each chip is thoroughly tested with the Commodore 64 diagnostic cartridge version 586220*.
I run each chip through several hundred cycles to ensure it will not fail. Most of the testing is done over night while sleeping or during the day while I am at work, this ensures at least 7 hours of runtime.
If you experience any issues with the chip within 30 days of purchase I will refund your purchase price and pay for return shipping, just please keep the box to facilitate any returns.
I want my customers to be happy with their purchase.