Description

SNK Neo Geo DIP BIOS adapter for PLCC 68K v1.1

This PCB is useful to allow fitment of a DIP EPROM onto the SNK Neo Geo MV1B. Measure up against the 1C before ordering - not tested on the 1C. It provides a way to fit a Diagnostic BIOS or UNIBIOS etc.

To fit this to the PLCC 68K CPU you need to fit a PLCC-68 through hole socket onto the underside of the PCB. The socket may need its surface sanding down (as covered in the video below). There's also a position for a 100nF bypass capacitor, and two pads to connect the OE and CS to the relevant places on the motherboard (where you remove the SMD ROM on the MV1B / 1C).

Testing video - https://www.youtube.com/watch?v=BsILghOnXtg

Download Gerbers

Nov 27,2024

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SNK Neo Geo DIP BIOS adapter for PLCC 68K v1.1

A quick and dirty adapter to allow fitment of a DIP EPROM (27C1024) to Neo Geo MV-1B (Tested) or MV-1C (Untested) boards.

Published: Nov 27,2024

Download Gerber file 1

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