Thank you for your reply. Is there a list that shows how many eproms are in each cart, and what size they are? Also If each cart has more than one eprom in it, why are the rom images floating around a single file?
There are curiosities like some Donkey Kong cartridges have 3 eproms, and some have only 2 eproms. The reason for that is the cost of production, so they asked the programmers to optimize the game size enough to fit into 2 eproms instead of 3 and they did it. Beside that, most of the games released by Coleco are 16K, some are 24K, and that's pretty much it. A list in text that include the rom size of each game is included in a giant text file called Coleco FAQ or CVFAQ. As for getting only one rom file instead of multiple 8k rom files for each game, well it's more easier to deal with a single file.
I know for sure that one guy did replace the 3 eproms from an original ColecoVision pcb to make his own DACMAN cartridge, which is my PacMan-like game ( size 24K ). But as for the other homebrew games, they are all about 32K... and finding a 32K pcb by Coleco is almost impossible.
I'm familiar with the ColecoVision FAQs, but I question how correct it is. It states that the cartridge Alcazar is a 32k game. However, the rom image doesn't have any data past the first 16k. I've been able to add empty space onto other coleco roms, and they ran just fine with an emulator. Does this mean the FAQs is incorrect? I haven't been able to get my hands on a cart to check it out. If the FAQs is right and it is a 32k game, does the game pcb have four 8k roms? If the CVFAQ is wrong, how does a non-expert like myself know what is what?