After getting my Commodore VIC-20 working with SD2IEC (Was a blown 7406 hex inverter) it’s now time to build a 32k expansion. Found a great write up on Ruud’s Commodore site. A schematic is provided which gives the VIC-20 32k of expansion memory using 62256 (32k x 8 RAM) and a 6264 (8k x 8 RAM) …
