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classic2fpu
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Christopher Kobayashi 2020-04-20 00:46:18 +09:00
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# Macintosh Classic II FPU / ROM board
The .pcb file is a DesignSpark board file.
Design by Joshua Ryan <360alaska@gmail.com>
## Parts list
All capacitors are 0.1µF non-polarized. Ceramic or tantalum, your choice.
The FPU socket is a 68-pin PLCC, Mouser #517-8468-11B1-RK-TP or similar.
The board connector is a TE Connectivity 2x25-pin DIP, Mouser #571-5-532955-8 or similar.
The oscillator is a 40MHz standard oscillator, Mouser #520-2200B-400 or similar.
## Circuit board fabrication details
The .pcb file is a DesignSpark board file.
The .zip file are the Gerbers that work without modification with PCBway.