PicoRAM 6116 - SRAM Emulator & SD Card Interface

Give your Microprofessor MPF-1B (and other machines) a versatile SD card interface - no more cassettes!

1
Get the right parts!
- The schematics lists 2x 74LS374, but you should actually use 2x 74LS373!
- Use the JP1 jumper to determine if the 6116 OE or CS is the trigger for PicoRAM: LEFT = OE, RIGHT = CS. For the Microprofessor MPF-1B, use RIGHT POSITION = CS!
- Use the right 2way 6 Pin DPDT Locking Push Buttons - the common pin must be in the middle! THESE DON'T WORK: https://www.amazon.com/Antrader-Button-Self-locking-Latching-Switches/dp/B07QVX1CKZ/ the grey 8mm ones in this set are perfect: https://www.amazon.com/gp/product/B081VB7LY2

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