Just an FYI if you own a beige QI motherboard and purchase a F18A video board. The VDP RAM (and related electronics) prevents the board from sitting evenly in the slot. However, this is easily fixed with any 40-pin socket (see pictures) or, possibly, the ColecoVision, tall pins version. (I'm not sure of the latter as I don't have a tall pin version of the F18A.)
This might have been mentioned previously somewhere, but after doing some searching here and on the http://codehackcreate.com site, I didn't see any mention of this. If this has been mentioned before, I apologize for reposting.
And, if you do have a QI board, you don't have to worry about the additional height as there is only the heat shield on the bottom of the motherboard. Plenty of room up top for the socket and F18A board!
Just some pictures showing my configuration after adding a 40-pin socket.
Edited by rickneff68, Mon May 15, 2017 7:58 PM.