Originally Posted By hap
Sean about COP400 MB's Plus One, can you tell me how you distinguished the rombits visually?

It has a COP410, like the Funtronics games, but in a smaller package so the pins necessary to electronically dump it weren't available. So I used the Funtronics Jacks pics and electronic dump to figure out the bit order.
Here's a piece of the ROM array:
Here's a GIMP pic where one layer has the die shot and another layer has the bits: www.seanriddle.com/plusoneacid2a.7z
Here's the bit layout from Jacks: http://www.seanriddle.com/jacksrom.jpg