Apple-2-HW/unified_retro_keyboard
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hardware/interface-osi/README.md
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* OSI Compatible interface
An interface for OSI computers that is compatible with the OSI 542C keyboard, including sound circuits.
This interface also permits substitution of a soft-shiftlock function using
@ -6,6 +7,8 @@ a regular momentary keyswitch, instead of the hard-to-fine latchine keyswitch.
An LED is provided to indicate SHIFT LOCK status. This interface mates with
the Classic ASCII keyboard, configured with the OSI keycaps.
<img alt="Assembly Rendering" src="images/pcb-render.png" height=50% width=50%>
**Construction Notes:
1. If a diode per key is installed on the keyboard, then omit diodes D1-D8 and install D18.