Polynomial material balance after 100.000 games

[stockfish] / Readme.txt

diff --git a/Readme.txt b/Readme.txt
index 0c6f5c7210bec5e62f17f3a12d40e77c78673151..1a3713985e7cec3e47746503892284cd518f4c64 100644 (file)
--- a/Readme.txt
+++ b/Readme.txt
@@ -54,6 +54,15 @@ The exception is computer with big-endian CPUs, like PowerPC
 Macintoshes. Some of the bitboard routines in the current version of\r
 Stockfish are endianness-sensitive, and won't work on a big-endian CPU.\r
 \r
+Stockfish has POPCNT instruction runtime detection and support. This can\r
+give an extra speed on Core i7 or similar systems. To enable this feature\r
+(disabled by default) simply uncomment #define USE_POPCNT in bitcount.h\r
+before to compile.\r
+\r
+On 64 bit Unix-like systems the 'bsfq' assembly instruction will be used\r
+for bit counting. Detection is automatic at compile time, but in case you\r
+experience compile problems you can comment out #define USE_BSFQ line in types.h\r
+\r
 \r
 5. Terms of use\r
 ---------------\r