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Pin 1 jumpered - 901486-07 PAL-B Original Kernal (UE12). Pin 2 jumpered - 901486-06 NTSC-M Kernal (UE12). If your VIC 20 does not have a socket in place then you will first need to remove the ROM and replace it with a socket.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.