the IC is a 377 like Memblers mentioned, the Color Dreams cartridges need certain code in the reset routine to disable the CIC inside the Nintendo, you will need this code to play anything. on the bottom of the Color Dreams cartridge it should say BC3, BC4, BC5, or BC6, i am guessing it is probably a BC3. if you want the boot code for the cart let me know, i will send it to you :)