I realize some SNES cartridges used coprocessors to enhance the
abilities of the system.  This is not what I am referring to.

Games for the SNES and NES both contained a CPU in every single
cartridge.  This chip was usually labelled 'CIC' on the printed
circuit board.  The code changed between the systems, but the CPU was
the same.  The CPU is 4-bit and its opcodes are 8-bit.

Here is an example of the datecode/information on a NES CIC chip:
6113B1
(c) 1988 Nintendo
9046 5 AB

Here is an example of the datecode/information on a SNES CIC chip:
D411A
(c) 1990 Nintendo
9442 BA


I cannot personally verify this, but I have heard that Nintendo64
cartridges also used the same CPU. (If you go this route to answer the
questions, I will also need verification that the N64 cartidges did
use the same CPU.)

I would like the following:
1] What CPU core did Nintendo use in this chip?
2] A datasheet, or similar, for the CPU core that lists the opcodes it uses.

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Clarification of Question by snesprogrammer-ga on 16 May 2005 01:30 PDT

Researchers:
It has been two weeks and no one has looked into my question.
If there is a problem, whether you need more information, or need more
money before it is worth it ($100 isn't adaquate?) ... please let me
know in a request for clarification or just in a comment below.

Please, if everyone is skipping this question I'd like to know how to
remedy this now instead of just watching it sit and then expire by the
end of the month without knowing what caused it.

Thank you...