Of Commodore

You ever follow a walkthrough online, or discover some new thing, learn up about it, do the thing, then later on completely forget how to do that thing again? That’s the kind of thing I’m trying to eliminate for me with this site, and maybe share something useful with the rest of the world too. I make no claims to have created or invented...

[Archived from Peter Schepers' site]
The ROM's in the C64 and the original 1541 models are 24 pin and are not directly pin compatible with burnable 2732 or 2764 EPROMS. In order to upgrade to a newer ROM revision or change the ROM to something else and use either a 2732 (for the character set) or 2764 (for kernal/DOS) EPROM, a socket adapter must be built. See here for detailed instructions on how to build one.

Socket adapters are required on the original C64 and 1541 models when replacing the existing 24-pin ROM with a 28-pin EPROM, like a 2764 or larger. They are also needed if you want to replace a 2764 with a larger 27128, a 27128 with a 27256 or a 27256 with a 27512. All of these adapters are covered here.

A backup archive of another C64 software site (mostly related to interfacing with DOS/Win systems)

Latest Updates

Ray Carlsen is well known in the Commodore community as a bit of an electronics wizard. He is a skilled and knowledgeable in electronics repair, and has put a great deal of effort into documenting all things Commodore, including inventing or refining modern-day add-ons and upgrades to Commodore computers and the 8-bit computer world in general. This archive is an attempt to preserve and...