Description
Control firmware for a tram ticket machine, read from the machine’s chips before it was scrapped.
Provenance
Donated with the machine it was used on. The chips were read several times in a programmer; one differing bit was resolved by majority. Rebuilt from 4 damaged copies, none of them complete on its own.
Preservation
- Fixity (SHA-256)
0b4c532fec210168aae4d20d049d4695af41209780da89bab2c9c1243ce6bba1- Last verified
- Oct 21, 2026, by Vigil
- Emulation profile
- LZE-EMBED-2 · lz-mcu core
- Copies
- Three, on two kinds of storage, in two cities
- Original carriers
- Kept in cold storage in Vancouver
Access
Free, in reading rooms only, under the Lazarus orphan works policy.
In the reading room it runs in emulation under profile LZE-EMBED-2, from a read-only copy of the recovered image, as it would have on an embedded controller.
Cite as: Helix Instruments, Helix tram ticket machine controller, model ZK-30 (1986). Lazarus Archive, LZ-39070.