From: John Tsiombikas <nuclear@member.fsf.org>
Date: Mon, 12 Apr 2021 13:10:29 +0000 (+0300)
Subject: wait states!
X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=gbajam21;a=commitdiff_plain;h=89d3ade57e85addac5eab0f3e8a795f23d518944

wait states!
---

diff --git a/src/gbaregs.h b/src/gbaregs.h
index 586f53a..3396cc9 100644
--- a/src/gbaregs.h
+++ b/src/gbaregs.h
@@ -351,5 +351,15 @@
 #define DMACNT_IEN			0x40000000
 #define DMACNT_EN			0x80000000
 
+/* REG_WAITCNT bits */
+#define WAITCNT_ROM_4_2		0x0000
+#define WAITCNT_ROM_3_2		0x0004
+#define WAITCNT_ROM_2_2		0x0008
+#define WAITCNT_ROM_8_2		0x000c
+#define WAITCNT_ROM_4_1		0x0010
+#define WAITCNT_ROM_3_1		0x0014
+#define WAITCNT_ROM_2_1		0x0018
+#define WAITCNT_ROM_8_1		0x001c
+#define WAITCNT_PREFETCH	0x4000
 
 #endif	/* GBAREGS_H_ */
diff --git a/src/main.c b/src/main.c
index 8f122b5..f629a13 100644
--- a/src/main.c
+++ b/src/main.c
@@ -16,6 +16,8 @@ int main(void)
 {
 	intr_init();
 
+	REG_WAITCNT = WAITCNT_PREFETCH | WAITCNT_ROM_2_1;
+
 #ifndef NOSOUND
 	interrupt(INTR_TIMER1, AAS_Timer1InterruptHandler);
 	AAS_SetConfig(AAS_CONFIG_MIX_24KHZ, AAS_CONFIG_CHANS_8, AAS_CONFIG_SPATIAL_STEREO, AAS_CONFIG_DYNAMIC_ON);