Hi,
I saw your thread about your 4032 with memory issues:
My ROMulator board might be useful to you:
http://bitfixer.com/romulator

It's a ROM/RAM replacement plus has debug functions, like halting the CPU and dumping the contents of RAM/ROM via a connection to a Raspberry PI. Also has daver's PETTEST ROM onboard as well as a couple of RAM/ROM tests I cooked up.
Please let me know if interested, thanks.
- Mike