Lazarus Archive · LZ-22851

Tandem pipe organ controller, model LX-550

Tandem Electronics, 1992. Firmware for an embedded controller.

Description

Control firmware for a pipe organ, read from the machine’s chips before it was scrapped.

Provenance

Deposited by Millfield Falls Computer Heritage Centre. The window labels had peeled and the EPROMs had been exposed to light, so each was read many times. Every sector was recovered on the first or second read.

Preservation

Fixity (SHA-256)
bd4788bfbf6c7c9bedf4b005dd6fb779820235fe841ac6fe2131bd3442ca37c4
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 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: Tandem Electronics, Tandem pipe organ controller, model LX-550 (1992). Lazarus Archive, LZ-22851.

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