bugfix: timer

diff --git a/core/GameBoy.cc b/core/GameBoy.cc
index d0efca9e3a4967e0751864b04683e7ec67c9fc0b..85b6df82253cf5bc64aef5bea8c8a12fe0aea1c6 100644 (file)
--- a/core/GameBoy.cc
+++ b/core/GameBoy.cc
@@ -1403,11 +1403,12 @@ GameBoy::run_status GameBoy::run_cycle()
        u8 TAC = memory.high[GBMemory::I_TAC];
        if (TAC & 0x04)
        {
-               timer_count++;
+               timer_count+=CYCLE_STEP;
+
                u32 limit;
                u32 val = TAC & 0x03;
-               if (val)
-                       limit = 16 << (2*val);
+               if (val > 0)
+                       limit = 4 << (2*val);
                else
                        limit = 1024;