2 layers138 × 79 mm

Pico506
hmerrett/pico506-pcb
A dedicated PCB for the Pico506 ST-506/MFM/RLL hard drive emulator: two-layer, 138 × 74 mm, all through-hole, with real card-edge tabs so it plugs into a period ST-506 control/data cable pair the same way an ST-225 does.
62 parts5GPL-3.0