ClausB Posted April 23, 2022 Author Share Posted April 23, 2022 Here are schematics for a 62K mod based on the 48K mod. Green mods are for 62K, red are the originals. It requires PortB bit 0 from pin 1 of joystick port 3, which you can wire to a D9 female connector and route under the top cover, or you can open the case and wire to R146 on the motherboard. I have built and tested the RAM board mods, but not yet the OS board mods. Quote Link to comment Share on other sites More sharing options...
ClausB Posted April 26, 2022 Author Share Posted April 26, 2022 To be clear, the mod above allows switching out OS ROMs for RAM, as in an XL. Quote Link to comment Share on other sites More sharing options...
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