6 layers290.7 × 322 mm

Board presignal
epatel/discrete6502
A MOS 6502 CPU rebuilt from 4,051 discrete transistors on a 291x322mm six-layer board that reproduces the original die layout
5,425 parts14
The AB8 is a specialty Switche made by Altech with 5 pins.
JLCPCB lists it (part C21081759). 1 open-source board in 1 repository on GitHub use it.
The library has no symbol for this part yet.
The library has no footprint for this part yet.

epatel/discrete6502
A MOS 6502 CPU rebuilt from 4,051 discrete transistors on a 291x322mm six-layer board that reproduces the original die layout
Altech publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C21081759, with 0 in stock; the sellers' links on this page open their listings.
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.