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The aspect of the GS that makes it challenging to emulate is the 2,560-bit internal bus. I'm sure I've told this story before but I'll tell it again. Back in 1998/99 I was on a secondment to the UK's Department of Trade & Industry (the Government Department that deals with commerce issues) which was home to the Export Control Organisation (ECO). The ECO is a regulator that controls the export of strategic goods (like military equipment), dual-use goods (like advanced manufacturing equipment) and advanced technology (like high-grade cryptography and supercomputers). Some things need licence before they can be exported (or indeed now, traded between overseas countries) because of their inherent opportunity for mis-use.
We received an enquiry for Sony Europe about this new supercomputer technology they had and wanted to come and talk to us about so they could work how they could manage exports of a new product between EU Member States. They came in and told us the product was the "successor to the PlayStation" and they believed it was classified as supercomputer under EU Dual-Use regulations (the EU's law). Bear in mind, this was before Sony had announced PlayStation 2. We were sceptical of course but the Sony guys explained that the internal bus was 2,560 bits wide and operated at whatever frequency and the EU had a definition on supercomputers that includes a threshold for data throughput of about half that the bandwidth of the GS. We some spent time on this and eventually concludes that it wasn't a supercomputer because the bandwidth was not user addressable - i.e. it was high bandwidth but limited in use case scenarios.
I assume Sony had similar discussions with other regulators and I recall the
press story that was carried in many places that Iraq's Suddam Hussein was planning to build a super computer comprised of networked PS2s.
As a PlayStation owner it was utterly cool to know that PS2 was coming but awful that I couldn't tell anybody about it. My most relevant claim to non-fame thanks to the Official Secrets Act. Thanks, Government
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