--- cpu.c.orig	Fri Oct 20 17:02:37 2000
+++ cpu.c	Fri Oct 20 16:55:18 2000
@@ -68,7 +68,7 @@
 
 int pc;
 int lcd_updated, lcdon, imask, intreq, hasbios=0;
-int spd;
+int spd = 328, oldspd = 328, mcy;
 int t0h, t0l, t0base, t0scale;
 int t1h, t1l;
 int gamesize;
@@ -356,12 +356,14 @@
      }
      break;
    case 0x10e:
+     oldspd = spd;
      switch(value&0xa0) {
-      case 0x00: spd = 3000; break;
-      case 0x20: spd = 164; break;
-      case 0x80: spd = 6000; break;
-      case 0xa0: spd = 328; break;
+      case 0x00: spd = 3000/6; break;
+      case 0x20: spd = 164/6; break;
+      case 0x80: spd = 6000/6; break;
+      case 0xa0: spd = 328/6; break;
      }
+     mcy = mcy * spd / oldspd;
      break;
    case 0x110:
      if(!(value&0x40))
@@ -633,8 +635,9 @@
 void run_cpu()
 {
   struct timeval epoch;
-  int mcy = 0, tick = 0;
+  int tick = 0;
 
+  mcy = 0;
   GETTIMEOFDAY(&epoch);
   for(;;) {
     int r, s, c, cy = 1, i = rom[pc];