MIDIbox SID External unit for core+2SID
By jjonas
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Having used individual PCBs for all core & SID modules, I could fit only three cores + six SIDs (plus CS stuff) inside the Commodore64 box. However I managed to get around the problem by building the 4th core inside an old digibox shell, which is connected to the main unit through one of the original c64 9-pin connectors; nine pins was just enough to make all the necessary connections: (1). GND, (2). 5 VDC, (3). 14 VDC, (4). Audio GND, (5). Audio L, (6). Audio R, (7). CAN bus, (8). J11:1, (9). J11:2. It's no hot-pluggable, attempting to do so will result in a reboot.
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