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unified_retro_keyboard
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Update README for Sol keyboard to reference integrated keyboard

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Dave 2021-01-01 00:29:59 -06:00
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hardware/keyboard-sol/README.md
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@ -2,6 +2,25 @@
This keyboard replicates the keyboard on the SOL-20.
This keyboad matrix works with one of the add-on ASCII encoders from this
project, which must be separately built or acquired.
This keyboard has a sibling [Sol-20 keyboard with integrated
encoder][../keyboard-sol-integrated]. The two keyboards are identical except for the following difference:
1. The integrated version places the connector closer to the main board keyboard
socket, so the original cable fits more easily.
1. The non-integrated version requires a piggy-back encoder board. When
installing in a Sol-20, this piggyback board must be mounted on the right
side of the keyboard, and connected with a cable, to avoid mechanical
interference from the Sol main board.
1. The piggy-back encoder permits use with other machines, via the Apple-1 and
Apple-2 sockets, and two different user-configurable headers.
1. The piggy-back encoder also includes a UART interface.
The keyboard is designed using KiCad in order to be the most useful for anybody
wishing to modify the keyboard for more specific uses, or to add to the project.