Matt Desmond, the amazing creator of DesTestMax, has been working on improving his amazing diagnostic cartridge with a clever addition. The original could only test the first 4k of RAM, which was all it could see in the special MAX mode that allowed it to test the memory even if all of the ROM IC's and CIA chips were missing or broken. But now this new version does all that the original does, but once that passes it moves into a new mode where it can test all the rest of the C64 memory. And as well as that it can detect the ROM checksums, check the CIA timers, and test certain failure conditions for some of the logic chips too! All I need now is a sound test and I am set (and maybe a keyboard tester :D)

Matt Desmond https://factorofmatt.com/

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00:00 Whats it all about? 00:45 DesTestBox 02:24 DesTestSwitch 03:02 The Retro Hardware Discord 04:40 DesTestMax revisited 05:45 Doomed Chips 06:42 DesTestMaxTest 07:45 DesTestSwitch first look 09:40 DesTestSwitchBuild 11:38 Jumper Settings 15:00 DesTestSwitchTest 21:20 Test Finished