X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Ftiming.h;h=360ce311ff190a42ebcdb297219af61b03f4f3a5;hb=00f99074bf49f4d52d17a534dd3d4e451f4bbc59;hp=28f906eb3685b0add8c25046eb0c25da86b3b9f1;hpb=2879315d07ce59a7996bc8a137c3b66ae018013a;p=stargem2

diff --git a/src/timing.h b/src/timing.h
index 28f906e..360ce31 100755
--- a/src/timing.h
+++ b/src/timing.h
@@ -8,33 +8,13 @@
 #ifndef __TIMING_H__
 #define __TIMING_H__
 
-#include "types.h"
-
-// Note that these are NTSC timings:
-
-//#define RISC_CYCLE_IN_USEC     0.03760684198
-//#define M68K_CYCLE_IN_USEC     (RISC_CYCLE_IN_USEC * 2)
-//#define HORIZ_PERIOD_IN_USEC   63.5555
-//#define M6502_CYCLE_IN_USEC      0.9765625
-
-//#define MASTER_CLOCK		(12000000)
-//#define SOUND_CLOCK			(3579000)
-//	MDRV_CPU_ADD("maincpu", M6809, MASTER_CLOCK/3/4)
-//	MDRV_CPU_PROGRAM_MAP(defender_map)
-//	MDRV_CPU_ADD("soundcpu", M6808, SOUND_CLOCK)
-//	MDRV_CPU_PROGRAM_MAP(defender_sound_map)
-
+// Even though it's driven at 4 MHz, internally it runs at 1/4 that speed
 #define M6808_CLOCK_SPEED_IN_HZ		(3579000.0 / 4.0)
 #define M6809_CLOCK_SPEED_IN_HZ		(1000000.0)
 
-// Actually, it's 1.1176306230790722 usec
-//#define M6808_CYCLE_IN_USEC      (0.9765625)
 #define M6808_CYCLE_IN_USEC		(1000000.0 / M6808_CLOCK_SPEEK_IN_HZ)
 #define M6809_CYCLE_IN_USEC		(1000000.0 / M6809_CLOCK_SPEED_IN_HZ)
 
-//#define USEC_TO_RISC_CYCLES(u) (uint32)(((u) / RISC_CYCLE_IN_USEC) + 0.5)
-//#define USEC_TO_M68K_CYCLES(u) (uint32)(((u) / M68K_CYCLE_IN_USEC) + 0.5)
-//#define USEC_TO_M6502_CYCLES(u)  (uint32)(((u) / M6502_CYCLE_IN_USEC) + 0.5)
 #define USEC_TO_M6808_CYCLES(u)  (uint32)(((u) / M6808_CYCLE_IN_USEC) + 0.5)
 #define USEC_TO_M6809_CYCLES(u)  (uint32)(((u) / M6809_CYCLE_IN_USEC) + 0.5)