He carefully, deliberately, copied mini_vmac.rom from the sandbox onto a dedicated, air-gapped Raspberry Pi. He connected a small e-ink display and a single solar cell. He placed it on the windowsill facing west.
Many abandonware sites host ROM files because Apple has historically been lax on pursuing emulation hobbyists, but The most common file you will find is named vMac.ROM with an MD5 checksum of b4f5d2d6a3f1e0c9b8a7d6c5b4a3f2e1 (example – verify actual checksums via emulation forums). Always scan any ROM you download from third-party sites with antivirus software. mini vmac rom