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Siroyan
Siroyan Limited was a privately held technology company developing an advanced configurable VLIW processor supplied as a Semiconductor Intellectual Property Core. The architecture of the processor was called OneDSP which hinted at the ability of a single defined architecture to address a wide performance spectrum. This was principally achieved by the definition of a group of computational resources called a "cluster", the number of clusters in a given instance of the architecture being decided by the customer when defining a System on a Chip. The emphasis on DSP (Digital Signal Processing) was because this was, and remains, a commercially important application domain for the Supercomputer-like performance provided by VLIW processors. However OneDSP also defined an efficient scalar instruction set for control code.

Siroyan was launched in 1999 out of an earlier company, Siroyan Technology Limited, that had acted as a European representative for a number of smaller Californian EDA and Semiconductor Intellectual Property Core companies.

Siroyan raised a significant round of venture capital at the height of the Dot-com bubble in 2000. Following the technology stock crash and the September 11, 2001 terrorist attacks that led to a very adverse investment climate Siroyan failed to raise additional funds. Siroyan was eventually wound up in 2003.

OneDSP
The OneDSP architecture was first presented at the October 2001 Microprocessor Forum.

A key design goal of OneDSP was the ability to generate efficient code directly from high-level languages. This built on the earlier work of Siroyan's architect, Dr. Nigel Topham, of Edinburgh University.

OneDSP: A unifying DSP architecture for Systems-on-a-chip

Siroyan Website