It is estimated that between 1
50 of this variation were
This development kit seems to have been commonly been used for development of Famicom and even NES games even if they ended up on cartridges for western audiences.
It was made by a company called Intelligent Systems, possibly onlyeven used within Intelligent Systems themselves, although they did mass produce a similar product for the SNES so it is possible that this was THE official development kit for the NES.
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