Apple-2-HW/unified_retro_keyboard
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376 Commits 9 Branches 8 Tags 62 MiB
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3 Commits

Author SHA1 Message Date
Dave
e415d43c84 Update addon board updates 
- Add diode to C5 to prevent discharge into 5V

- allow selection of default ON or OFF soft switch.
 2020-05-27 19:23:34 -05:00
Dave
3c8a02ce9a addon board uses 74HC14 2020-05-21 15:13:04 -05:00
Dave
9482a3bf0e Adjustments for OSI RESET and shiftlock circuits 
- adjust RC constants to use simple, common values and reduce number of
different part values.

- Create add-on PCB to provide reset/shiftlock function for older 542 and SB2
keyboards.
 2020-05-21 13:48:38 -05:00