Author: Robert Hyatt
Date: 11:50:53 12/16/99
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On December 16, 1999 at 14:44:21, Tom Kerrigan wrote: >On December 16, 1999 at 14:02:42, J. Wesley Cleveland wrote: > >>Unfortunately, you asked him the wrong question. The FPGAs were not intended to >>replace the PowerPC chips used in DB, they were to replace the custom chips that >>did chess search and evaluation. You could ask your friend if he thought that >>today's FPGAs could replace a moderately complex ASIC of three years ago. > >I actually gave him the specifics of the Deep Blue chips, so he knew exactly >what the question was. Realize that the DB chips are similar to general-purpose >processors in terms of logic. I'm sure that by "modern processor" he means >anything made within the last decade (or so). > >-Tom The real headache with FPGAs is that they have some important missing things that the DB chips have. ie on-chip RAM for various hardware stacks, and so forth. One such example is the repetition detection that has to store a stack of positions to test for rep matches... Not to mention registers... etc... All that stuff ends up being 'off-chip'...
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