Author: Robert Hyatt
Date: 08:45:08 05/16/01
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On May 16, 2001 at 09:10:42, Joshua Lee wrote: > >>>>Burroughs B5500 >>> >>>very slow >> >>About 1 MIPS was claimed, not sure if it was true. Very weird machine with a 47 >>bit word, stack based. The instruction set was optimised for small code size >>rather than speed. The operating systems were multi-user multi-tasking, but >>there was no memory protection in the hardware. The compilers were supposed to >>generate code that never mangled other programs memory, and you weren't supposed >>to use assembler. I never got to use one (i'm not sure if any were even sold in >>my country) so i can't vouch for how well it all worked. >> >>I didn't know anyone wrote a chess program for these. >> > >All i could find about this one so far is that COKO III was written in FORTRAN >IV and had been executed on IBM 7044, 360/50, 65, 91 PDP 10, UNIVAC 1108 and >the B5500/6500. also The Marsland Chess Program. I am sure i will end up finding >some other hardware to ask about so look out for my posts i will use the same >name. Thankyou Ed Kozdrowicki sent me a copy of the source code for Coko IV, about 80,000 lines of Fortran. It was the second source program I saw (other than mine) and played with. It was lost 20+ years ago unfortunately. I also had a copy of the greenblatt program source (dec assembly language) but it was also lost many years ago.
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