Author: Tom Kerrigan
Date: 13:02:50 04/10/02
Go up one level in this thread
On April 10, 2002 at 00:43:43, Robert Hyatt wrote: >Make/Unmake are the procedures that update the bitboard and hash signature >stuff as moves are made/unmade. Updating hash signature stuff might be a The problem is that "updating" bitboards and hash signatures sounds a lot like memory and control flow operations instead of logical operations. Making FPGA logic to do this is ugly, slow, and consequently worthless. You mention in a previous post that it would be useful to rotate bitboards quickly. How long does it take to rotate a bitboard with an MPU? A single PCI cycle is 30 ns, and the cycle time of a 2GHz chip is 0.5 ns, so unless it takes much more than 60 instructions to do this rotation, using an FPGA will only slow your program down. -Tom
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.