So far so good. It fits, but barely. I had to swap the config jumper headers to right angle and stick some on the back. I also had to do some wacky soldering of the headers so I could trim them down to make the riser as thin as possible when attached to the MSX cartridge board.

Now I've gotta make a ton of tiny little jumpers. Then the long jumpers from the lower socket to the upper socket.

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Boring! It just powers on, where's the fun in that.

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Something kind of like that. Header pins sticking down on the bottom that will plug into the ROM socket. Then on the opposite end a ROM socket on top, and a set of header pins on each side of the ROM socket sticking up. Wires running over the top for one row, underneath for the other row.

The header pins next to the ROM socket would be useful for jumpering to adapt 32 to 28, and also to hook a logic analyzer onto.

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Maybe I could make a "socket riser" out of proto PCB that plugs into the 28 pin ROM socket on the bottom, has a bunch of wires running up to a 32 pin socket on the top, and whatever jumpering necessary to go from 28 to 32. That's a lot of little wires to solder. And of course the MSX ROM is oriented one way and the CoCo is the other, so if I want to do both I have to make two adapters. 😒

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I was thinking I could maybe use an IDC DIP 28 pin connector to a ribbon cable to feed off the board. These things open up and you insert a ribbon cable without stripping the ends. Then you smash it back together and the [I]nsulation [D]isplacement pierces the insulation and connects to the wire inside.

But don't have a 28 pin. Don't think cutting down a 40 pin will work, and I don't see a way to add 4 pins to the 24 pin one.

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