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Cleaned up turbo handling.

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This commit is contained in:
SarahW 2018-03-11 16:43:32 +00:00
commit b530bdafea
9 changed files with 54 additions and 32 deletions
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37
src/cpu.c
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@ -7,6 +7,9 @@
#include "pci.h"
#include "codegen.h"
static int cpu_turbo_speed, cpu_nonturbo_speed;
static int cpu_turbo = 1;
int isa_cycles;
int has_vlb;
static uint8_t ccr0, ccr1, ccr2, ccr3, ccr4, ccr5, ccr6;
@ -505,6 +508,14 @@ void cpu_set()
ccr0 = ccr1 = ccr2 = ccr3 = ccr4 = ccr5 = ccr6 = 0;
has_vlb = (cpu_s->cpu_type >= CPU_i486SX) && (cpu_s->cpu_type <= CPU_Cx5x86);
cpu_turbo_speed = cpu_s->rspeed;
if (cpu_s->cpu_type < CPU_286)
cpu_nonturbo_speed = 4772728;
else if (cpu_s->rspeed < 8000000)
cpu_nonturbo_speed = cpu_s->rspeed;
else
cpu_nonturbo_speed = 8000000;
cpu_update_waitstates();
isa_cycles = cpu_s->atclk_div;
@ -1670,3 +1681,29 @@ void cpu_update_waitstates()
cpu_prefetch_cycles *= 4;
cpu_mem_prefetch_cycles = cpu_prefetch_cycles;
}
void cpu_set_turbo(int turbo)
{
if (cpu_turbo != turbo)
{
cpu_turbo = turbo;
cpu_s = &models[model].cpu[cpu_manufacturer].cpus[cpu];
if (cpu_s->cpu_type >= CPU_286)
{
if (cpu_turbo)
setpitclock(cpu_turbo_speed);
else
setpitclock(cpu_nonturbo_speed);
}
else
setpitclock(14318184.0);
}
}
int cpu_get_speed()
{
if (cpu_turbo)
return cpu_turbo_speed;
return cpu_nonturbo_speed;
}