diff -ru ../../work/release/unix/unix.cpp ./unix/unix.cpp
--- ../../work/release/unix/unix.cpp	Thu Sep 23 19:56:48 1999
+++ ./unix/unix.cpp	Wed Dec 29 01:56:32 1999
@@ -49,9 +49,11 @@
 #include <ctype.h>
 
 
-#if defined(__linux) || defined(__sun)
+#if defined(__linux) || defined(__sun) || defined(__FreeBSD__)
+#if !defined(__FreeBSD__)
 #undef USE_THREADS
 #define USE_THREADS
+#endif
 #include <unistd.h>
 #include <sys/types.h>
 #include <sys/ioctl.h>
@@ -66,8 +68,12 @@
 pthread_mutex_t mutex;
 #endif
 
+#ifndef __sun
 #ifdef __linux
 #include <sys/soundcard.h>
+#else
+#include <machine/soundcard.h>
+#endif
 #include <sys/mman.h>
 #endif
 
@@ -83,6 +89,10 @@
 typedef void (*SIG_PF)();
 #endif
 
+#if defined(__FreeBSD__)
+typedef sig_t SIG_PF;
+#endif
+
 #include "snes9x.h"
 #include "memmap.h"
 #include "debug.h"
@@ -159,7 +169,7 @@
 char *rom_filename = NULL;
 char *snapshot_filename = NULL;
 
-#if defined(__linux) || defined(__sun)
+#if defined(__linux) || defined(__sun) || defined(__FreeBSD__)
 static void sigbrkhandler(int)
 {
 #ifdef DEBUGGER
@@ -402,7 +412,7 @@
 #if !defined(__MSDOS) && defined(DEBUGGER)
 #if defined(__unix) && !defined(__NeXT__)
     struct sigaction sa;
-#if defined(__linux)
+#if defined(__linux) || defined(__FreeBSD__)
     sa.sa_handler = sigbrkhandler;
 #else
     sa.sa_handler = (SIG_PF) sigbrkhandler;
@@ -1397,7 +1407,7 @@
 }
 #endif
 
-#if defined(__linux)
+#if defined(__linux) || defined(__FreeBSD__)
 static int Rates[8] =
 {
     0, 8192, 11025, 16500, 22050, 29300, 36600, 44000
@@ -1514,7 +1524,7 @@
 }
 #endif
 
-#if defined (__linux) || defined (__sun)
+#if defined (__linux) || defined (__sun) || defined(__FreeBSD__)
 void S9xUnixProcessSound (void)
 {
 }
@@ -1613,7 +1623,7 @@
 
 void *S9xProcessSound (void *)
 {
-#ifdef __linux
+#if defined(__linux) || defined(__FreeBSD__)
     audio_buf_info info;
     count_info count;