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Retro hardware passion

Archive for February, 2022

Month: February 2022

Weren’t you always wondering if you can boot C64 faster? Have you heard about startup memory test? Actually each time C64 turns on mem test is performed (general idea: memory byte is loaded, moved temporarily to X register, $55 is stored to ram and loaded back, ROLed (so it becomes $AA) and then compared to […]