Lazarus Archive · LZ-38496

Tessel loom controller, model SX-420

Tessel Electronics, 1977. Firmware for an embedded controller.

Description

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

Provenance

Sent to Lazarus by post, with a note asking whether anything could be saved. The save battery had died, but the program ROM was intact. Rebuilt from 2 damaged copies, none of them complete on its own.

Preservation

Fixity (SHA-256)
26ee7e6bb42cc39bda06409020b4b5e07eccfddfbee878feec6fe676953709c9
Last verified
Oct 27, 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: Tessel Electronics, Tessel loom controller, model SX-420 (1977). Lazarus Archive, LZ-38496.

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