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Account for the fixed multipliers in Pentium OverDrive 3.3V/MMX CPUs

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RichardG867
2020-11-18 21:20:54 -03:00
parent 461f8c2c5e
commit 022d7ccc47
1 changed files with 10 additions and 3 deletions
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13
src/cpu/cpu.c
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@@ -363,10 +363,17 @@ cpu_is_eligible(const cpu_family_t *cpu_family, int cpu, int machine)
if (machine_s->cpu_max_voltage && (cpu_s->voltage > (machine_s->cpu_max_voltage + 10))) /* maximum voltage with 10 mV tolerance */
return 0;
/* Account for CPUs that use a different multiplier than specified by jumpers. */
/* Account for CPUs that use a different internal multiplier than specified by jumpers. */
double multi = cpu_s->multi;
if (cpu_family->package & CPU_PKG_SOCKET5_7) {
if (multi == 1.75) /* K5 */
if (cpu_family->package & CPU_PKG_SOCKET4) {
if (multi == 2.0) /* Pentium OverDrive */
multi = 1.0;
} else if (cpu_family->package & CPU_PKG_SOCKET5_7) {
if ((cpu_s->cpuid_model == 0x52c) && !strcmp(cpu_family->internal_name, "pentium_p54c_od3v")) /* Pentium OverDrive 3.3V */
multi = machine_s->cpu_min_multi; /* fixed multiplier */
else if (cpu_s->cpuid_model == 0x1542) /* Pentium OverDrive MMX */
multi = machine_s->cpu_min_multi; /* fixed multiplier */
else if (multi == 1.75) /* K5 */
multi = 2.5;
else if ((multi == 2.0) && (cpu_s->cpu_type & CPU_5K86)) /* K5 */
multi = 3.0;