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mirror of https://github.com/osiweb/unified_retro_keyboard.git synced 2025-01-12 04:30:07 +00:00
Dave 5fa0f80b4e Add OSI interface schematic
Provides a keyboard interface to interface with OSI computers.  Equivalent to an
OSI 542C.

- Includes sound circuits

- Includes RESET delay circuit

- SHIFT LOCK can be mechanical push-on/push-off or soft toggle, selectable by
jumper.

- Provide SHIFT LOCK LED output.
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..
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