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prevent auto cycle adjusting to lower the cycles too much on heavy background load

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@3080
This commit is contained in:
Sebastian Strohhäcker 2008-01-16 20:17:15 +00:00
parent 4cb280c42a
commit ae447b6477
4 changed files with 74 additions and 20 deletions
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10
include/cpu.h
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@ -16,6 +16,8 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* $Id: cpu.h,v 1.52 2008-01-16 20:16:31 c2woody Exp $ */
#ifndef DOSBOX_CPU_H
#define DOSBOX_CPU_H
@ -36,6 +38,8 @@
#define CPU_AUTODETERMINE_SHIFT 0x02
#define CPU_AUTODETERMINE_MASK 0x03
#define CPU_CYCLES_LOWER_LIMIT 100
/* CPU Cycle Timing */
extern Bit32s CPU_Cycles;
extern Bit32s CPU_CycleLeft;
@ -45,6 +49,7 @@ extern Bit32s CPU_CyclePercUsed;
extern Bit32s CPU_CycleLimit;
extern Bit64s CPU_IODelayRemoved;
extern bool CPU_CycleAutoAdjust;
extern bool CPU_SkipCycleAutoAdjust;
extern Bitu CPU_AutoDetermineMode;
/* Some common Defines */
@ -61,6 +66,11 @@ Bits CPU_Core_Dyn_X86_Trap_Run(void);
Bits CPU_Core_Dynrec_Run(void);
Bits CPU_Core_Dynrec_Trap_Run(void);
void CPU_Enable_SkipAutoAdjust(void);
void CPU_Disable_SkipAutoAdjust(void);
void CPU_Reset_AutoAdjust(void);
//CPU Stuff
extern Bit16u parity_lookup[256];