Author: Roberto Waldteufel
Date: 16:17:31 04/26/00
Go up one level in this thread
On April 26, 2000 at 07:53:17, Robert Hyatt wrote: >On April 26, 2000 at 04:40:15, Roberto Waldteufel wrote: > >>Hello all, >> >>Some time ago I wrote a chess program called Rabbit, and after a long period of >>inactivity I have started working on it again. At present it does not have >>tablebases, and I would like to add this capability to it. I know that Dr >>Nalimov's tablebases are available for download from Dr Hyatt's ftp site, but my >>main problem is not knowing how to access the data from them. I expect that >>source code for this will be in C, which is not the language I use for >>programming, so I really need either to understand the precise formula for >>looking up a position or else to obtain a compiled version of the access code >>that my program could call. My target platform is Windows on a P3/450, so a DLL >>would be perfect for this. I wonder if such a DLL exists, and if so where can I >>find it? Alternatively, is there public information about the position --> >>address mapping of sufficient detail to allow me to program the lookups myself? >>Any help would be most welcome. >> >>Best wishes, >> >>Roberto > > >Your best bet is to look at his probe code, written in c++. If you are using >a compiled language, it ought to be possible to call this stuff from within >your program. Thank you for your reply. I use a Powerbasic compiler, which can certainly cope with calling external functions and subs from other .exe/.dll files. Since I last worked on Rabbit I have written a grandmaster level checkers program (now released), and for tablebase access in that I call a lookup function in a dll, supplying position information as parameters. I had the same problem there at first - there was public domain C-code for the accesses, but I needed something I could call from inside my own program. Fortunately I found someone who was willing to write me a dll for lookups in exchange for a freebie copy of the program. I would be interested to get the probe C-code in case I can make enough sense of it to rewrite it in powerbasic, or else to find a way to have it compiled in such a way as to be able to call it externally. Best wishes, Roberto
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.