This is a fix for the unobtainable 6530 RRIOT chips used in Allied Leisure pinball machines. It came about as a challenge from a friend. The board replaces all three chips with two 6532 RIOT ICs, an 8kB EPROM and some external logic chips.
6530 Replacement for Allied Leisure Pinballs
The 6530 Replacement board is released under the terms of the GPL v3. If you wish to make your own, the full schematic and Gerber files are available on GitHub.com.
The ROM images cannot be released be because they are copyrighted. You will need to obtain your own copy if you intend to make your own.
If you're in Australia, I can service and repair the original ALI board and include the 6530 Replacement. Please contact me if you have any queries.