Linked by Kroc Camen on Tue 22nd Jun 2010 12:46 UTC
Amiga & AROS The fabled Amiga X1000 has been spotted in the wild, in the homeliest of places--Station X, a.k.a Bletchley Park. "The AmigaOne X1000 is a custom dual core PowerPC board with plenty of modern ports and I/O interfaces. It runs AmigaOS 4, and is supported by Hyperion, a partner in the project. The most interesting bit, though, is the use of an 500Mhz XCore co-processor, which the X1000's hardware designer describes as a descendant of the transputer - once the great hope of British silicon." With thanks to Jason McGint, 'Richard' and Pascal Papara for submissions.
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Fixed 32-bit length instructions, makes determining code boundaries dead simple. x86's variable length instructions may be better for code density but since you're talking modern systems density no longer matters. Also, 32 general purpose registers means that custom ABIs can be used that keep necessary data in registers at all times, completely removing the memory latency (3 clock CAS latency is huge for an address bus that's already 1/3 CPU clock, and I've seen memory sticks, even new ones, that are even much higher than that, in the 5+ latency range).

Additionally, the instruction set itself, aside from being a clean 4 byte width, is clean and, dare I say, beautiful. Yes, that's a bias, but it's my bias, and you were asking why _I_ would pay extra for ppc over x86.

Besides, it's a little bit of geek nostalgia to have something that's different from everyone else like existed before x86 took over everything.

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