[Coco] Coco Homebrew ROM Cartridge?

[Torsten Dittel]

Hmmm... would be fun to have just one PAK containing any ROM-PAK ever 
released for the CoCo. The bank-switching types would be the harder ones 
to implement I guess. Have there been more than 256? If not, an 
8-positon DIP switch (e.g. 
http://www.sparkfun.com/commerce/images/products/DIP-Switch.jpg ) would 
be fine to select. More advanced: up/down buttons and a little 3-digit 
7-segment display (e.g. 
http://www.lc-led.com/images/displays/digitdisplays/3digit/blue3Digit_m.jpg 
). Should memorize the last selection then...