From 5a20ff0dc7c6a2fcde0b1e382f3d5a92aefa4ab9 Mon Sep 17 00:00:00 2001
From: Tatsuya79
Date: Thu, 8 Feb 2018 12:23:53 +0100
Subject: Overclock by reducing cycles.

---
 source/snes9x.h | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

(limited to 'source')

diff --git a/source/snes9x.h b/source/snes9x.h
index 9e7d91d..4a4364c 100644
--- a/source/snes9x.h
+++ b/source/snes9x.h
@@ -46,9 +46,9 @@
 
 #define SNES_CYCLES_PER_SCANLINE ((uint32_t) ((SNES_SCANLINE_TIME / SNES_CLOCK_LEN) * 6 + 0.5))
 
-#define ONE_CYCLE      6u
-#define SLOW_ONE_CYCLE 8u
-#define TWO_CYCLES     12u
+#define ONE_CYCLE      (overclock_cycles ? 4u : 6u)
+#define SLOW_ONE_CYCLE (overclock_cycles ? 4u : 8u)
+#define TWO_CYCLES     (overclock_cycles ? 6u : 12u)
 
 #define SNES_TR_MASK     (1u << 4)
 #define SNES_TL_MASK     (1u << 5)
@@ -63,6 +63,8 @@
 #define SNES_Y_MASK      (1u << 14)
 #define SNES_B_MASK      (1u << 15)
 
+extern bool overclock_cycles;
+
 enum
 {
    SNES_MULTIPLAYER5,
-- 
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