Description
Control firmware for a hearing aid, read from the machine’s chips before it was scrapped.
Provenance
Brought to a Lazarus rescue day by a former owner. The chips were read several times in a programmer; one differing bit was resolved by majority. Independent reads agree bit for bit.
Preservation
- Fixity (SHA-256)
ca7b88532d7e081bfc4da12f1d299a34011c1980ff0d2fdcf2fabb3920ce0559- Last verified
- Oct 25, 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: Basalt Instruments, Basalt hearing aid controller, model KV-420 (2008). Lazarus Archive, LZ-28054.