
Bootarooni
phooky/bootarooni
A Raspberry Pi Pico (RP2040) based Apple IIe expansion card with USB isolation.
Texas Instruments
0.4mA、2.6mA 0℃~+70℃ 35MHz 35ns@5V,15pF 4.75V~5.25V 74LS 8 8mA、24mA Asynchronous clear function、Output enable、Asynchronous parallel load function、Supports forward and reverse shift Tri-State - Shift Registers
The 74LS299DC is a shift Register made by Texas Instruments with 5 pins. 0.4mA、2.6mA 0℃~+70℃ 35MHz 35ns@5V,15pF 4.75V~5.25V 74LS 8 8mA、24mA Asynchronous clear function、Output enable、Asynchronous parallel load function、Supports forward and reverse shift Tri-State - Shift Registers.
JLCPCB lists it (part C3301331). 11 open-source boards in 10 repositories on GitHub use it.
The library has no symbol for this part yet.
The library has no footprint for this part yet.

phooky/bootarooni
A Raspberry Pi Pico (RP2040) based Apple IIe expansion card with USB isolation.

alexfreed58/z80-CPM-board-with-smart-i-o
This is yet another retro computer running CPM on an actual Z80 CPU with a twist. Instead of using a traditional UART for communications, it uses a RPi pico module that is no bigger and no more expensive than a UART.




lynchaj/duodyne
Duodyne is a hobbyist retrocomputer system designed to run ROMWBW. It is comprised of modules on a system bus

Edgeworth/memepu
cmake -DUSEAFL=yes -DCMAKEBUILDTYPE=Release $PFX/verymeme AFLSKIPCPUFREQ=yes AFLPRELOAD=/usr/local/lib/afl/libdislocator.so \ afl-fuzz -m 1024M -i $PFX/verymeme/testdata/memelang/parsing -o memelangfuzz \ -x…

abzman/Exidy-Sorcerer-Stuff
boards and maybe software for the exidy sorcerer
Texas Instruments publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C3301331, with 0 in stock; the sellers' links on this page open their listings.
11 boards in 10 repositories on GitHub; the most starred are listed on this page, with their KiCad files.