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Add custom ISA/PCI/AGP clock facility, and fix PIT clock calculation oversight for CPU clocks ending in (but not equal to) 33 and 66 MHz

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This commit is contained in:
RichardG867
2021-03-14 19:41:52 -03:00
parent 84c40909c7
commit dfee1165ea
4 changed files with 137 additions and 60 deletions
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8
src/cpu/cpu.h
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@@ -433,7 +433,7 @@ extern uint32_t oldds,oldss,olddslimit,oldsslimit,olddslimitw,oldsslimitw;
extern uint32_t pccache;
extern uint8_t *pccache2;
extern double bus_timing, pci_timing;
extern double bus_timing, isa_timing, pci_timing, agp_timing;
extern uint64_t pmc[2];
extern uint16_t temp_seg_data[4];
extern uint16_t cs_msr;
@@ -477,7 +477,7 @@ extern int cpu_cycles_read, cpu_cycles_read_l, cpu_cycles_write, cpu_cycles_writ
extern int cpu_prefetch_cycles, cpu_prefetch_width, cpu_mem_prefetch_cycles, cpu_rom_prefetch_cycles;
extern int cpu_waitstates;
extern int cpu_cache_int_enabled, cpu_cache_ext_enabled;
extern int cpu_pci_speed;
extern int cpu_isa_speed, cpu_pci_speed, cpu_agp_speed;
extern int timing_rr;
extern int timing_mr, timing_mrl;
@@ -523,6 +523,10 @@ extern char *cpu_current_pc(char *bufp);
extern void cpu_update_waitstates(void);
extern void cpu_set(void);
extern void cpu_set_isa_speed(int speed);
extern void cpu_set_pci_speed(int speed);
extern void cpu_set_isa_pci_div(int div);
extern void cpu_set_agp_speed(int speed);
extern void cpu_CPUID(void);
extern void cpu_RDMSR(void);