28C256 to 27C256

28C256 to 27C256 adapter

This is an adapter PCB to plug a 28C256 into a socket that expects a 27C256 or a mask rom.

The 28C256 is programmable without needing a test clip, by virtue of on-board jumpers to switch the pinout between 27C256 and 28C256. The board is also it's own programming adapter.

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How to do the DIP legs

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Source: http://github.com/bkw777/aDIPters

PCB: OSHPark or PCBWAY