Playmatic Pinball 1802/1824/1834 Questions

papapopop

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Hi,
picked up a playmatic Big Town non working.

The CPU is a 1802 (used in Galileo,Viking and Voyager spacecraft !)with 1834 ROMs and 1824 RAMs. Seemed to be 1024x8 but with +5V and -12V supply.
Does anyone knows how to read out the ROMs ?
Exist there a substitute or adapter to read it out like a 27xx Eprom or is there a known programmer.
Further would it be interesting for me if anyone made a clone of the 1802 CPU with an ATMEGA / gfpa / pic or similar ?

Same questions on the RAM 1824.

Hints would be usefull.
Oh yeah very old stuff, but I like it.
Greets
 
Hi,
thanks for reply.
Searching "Cosmac ELF" there are some schematics and datascheets, could be useful.
Thanks again, I never give up.
Greetings
 
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