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BigEd
PostPosted: Thu Feb 07, 2013 9:04 pm 
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Joined: Thu Dec 11, 2008 1:28 pm
Posts: 10986
Location: England
The BBC Micro was able to act as an i/o processor to an attached second processor(*), but the later cost-reduced Electron was not.

Over on stardot there's a project in progress to plug this important(!) gap.

See http://stardot.org.uk/forums/viewtopic. ... 469#p57469

Cheers
Ed

(*) A faster 6502, a Z80 for CP/M, an 80186, a 32-bit NatSemi 32016, a third-party 68000 machine, and even an early ARM. More recently, John Kortink's ReCo6502 used a 65816 and Sprow offers an ARM. Strictly as a hobby project there's also a PDP-11.

http://mdfs.net/Software/Tube/32016/
http://www.apdl.co.uk/riscworld/volume9 ... /index.htm
http://mdfs.net/Docs/Books/PDP11CoPro/Technical
http://www.sprow.co.uk/bbc/armcopro.htm
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ChuckT
PostPosted: Sat Feb 09, 2013 1:47 am 
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Joined: Wed May 20, 2009 1:06 pm
Posts: 491
BigEd wrote:
http://www.sprow.co.uk/bbc/armcopro.htm


Adding an ARM or second processor to the 6502 looks like fun.
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