Lazarus Archive · LZ-36739

Pebble boiler controller, model RH-90

Pebble Electronics, 1982. Firmware for an embedded controller.

Description

Control firmware for a boiler, 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. The image matches a checksum published by the original distributor.

Preservation

Fixity (SHA-256)
4426dae6445693238ff8c4c184589ba7dc417cd4bb9e4eb0236cbbb462ae4587
Last verified
Oct 30, 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 the Lazarus reading room in Vancouver and in partner reading rooms.

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: Pebble Electronics, Pebble boiler controller, model RH-90 (1982). Lazarus Archive, LZ-36739.

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