2020-04-19 15:38:17 +00:00
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# Macintosh Classic II FPU / ROM board
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2020-04-19 15:37:19 +00:00
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2020-04-19 15:50:46 +00:00
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Design by Joshua Ryan (<360alaska@gmail.com>)
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2020-04-19 15:46:18 +00:00
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## Parts list
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All capacitors are 0.1µF non-polarized. Ceramic or tantalum, your choice.
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The FPU socket is a 68-pin PLCC, Mouser #517-8468-11B1-RK-TP or similar.
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2020-04-19 15:37:19 +00:00
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2020-04-19 15:46:18 +00:00
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The board connector is a TE Connectivity 2x25-pin DIP, Mouser #571-5-532955-8 or similar.
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The oscillator is a 40MHz standard oscillator, Mouser #520-2200B-400 or similar.
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## Circuit board fabrication details
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2020-04-19 15:56:42 +00:00
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v4.9 is a four-layer board.
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2020-04-19 15:46:18 +00:00
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The .pcb file is a DesignSpark board file.
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2020-04-19 15:56:42 +00:00
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The .zip file contains the Gerbers for PCB fabriation. These work as-is with PCBway.
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