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68k, synchronize timing in fame and musashi (for debugging)

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This commit is contained in:
kub 2021-05-24 23:10:03 +02:00
parent b26071be31
commit 5e04c2f37f
6 changed files with 15 additions and 9 deletions
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2
cpu/musashi/m68k_in.c
View file

@ -389,7 +389,7 @@ addi 32 . . 0000011010...... A+-DXWL... U U U U 20 20 4 4
addq 8 . d 0101...000000... .......... U U U U 4 4 2 2
addq 8 . . 0101...000...... A+-DXWL... U U U U 8 8 4 4
addq 16 . d 0101...001000... .......... U U U U 4 4 2 2
addq 16 . a 0101...001001... .......... U U U U 4 4 2 2
addq 16 . a 0101...001001... .......... U U U U 8 8 2 2
addq 16 . . 0101...001...... A+-DXWL... U U U U 8 8 4 4
addq 32 . d 0101...010000... .......... U U U U 8 8 2 2
addq 32 . a 0101...010001... .......... U U U U 8 8 2 2

10
cpu/musashi/m68kcpu.c
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@ -43,7 +43,7 @@ extern void m68040_fpu_op1(void);
/* ================================= DATA ================================= */
/* ======================================================================== */
int m68ki_initial_cycles;
//int m68ki_initial_cycles;
//int m68ki_remaining_cycles = 0; /* Number of clocks remaining */
uint m68ki_tracing = 0;
uint m68ki_address_space;
@ -828,6 +828,10 @@ int m68k_execute(int num_cycles)
m68ki_instruction_jump_table[REG_IR]();
USE_CYCLES(CYC_INSTRUCTION[REG_IR]); // moving this up may cause a deadlock
/* ASG: update cycles */
USE_CYCLES(CPU_INT_CYCLES);
CPU_INT_CYCLES = 0;
/* Trace m68k_exception, if necessary */
m68ki_exception_if_trace(); /* auto-disable (see m68kcpu.h) */
@ -839,10 +843,6 @@ int m68k_execute(int num_cycles)
/* set previous PC to current PC for the next entry into the loop */
REG_PPC = REG_PC;
/* ASG: update cycles */
USE_CYCLES(CPU_INT_CYCLES);
CPU_INT_CYCLES = 0;
/* return how many clocks we used */
return m68ki_initial_cycles - GET_CYCLES();
}

2
cpu/musashi/m68kcpu.h
View file

@ -916,6 +916,7 @@ typedef struct
void (*instr_hook_callback)(void); /* Called every instruction cycle prior to execution */
// notaz
sint cyc_initial_cycles;
sint cyc_remaining_cycles;
sint not_polling;
} m68ki_cpu_core;
@ -923,6 +924,7 @@ typedef struct
// notaz
extern m68ki_cpu_core *m68ki_cpu_p;
#define m68ki_cpu (*m68ki_cpu_p)
#define m68ki_initial_cycles m68ki_cpu_p->cyc_initial_cycles
#define m68ki_remaining_cycles m68ki_cpu_p->cyc_remaining_cycles

3
cpu/musashi/m68kmake.c
View file

@ -641,6 +641,9 @@ int get_oper_cycles(opcode_struct* op, int ea_mode, int cpu_type)
strcmp(op->name, "suba") == 0))
return op->cycles[cpu_type] + g_ea_cycle_table[ea_mode][cpu_type][size] + 2;
if(cpu_type == CPU_TYPE_000 && ea_mode == EA_MODE_I && op->size == 8 && strcmp(op->name, "btst") == 0)
return op->cycles[cpu_type] + g_ea_cycle_table[ea_mode][cpu_type][size] + 2;
if(strcmp(op->name, "jmp") == 0)
return op->cycles[cpu_type] + g_jmp_cycle_table[ea_mode];
if(strcmp(op->name, "jsr") == 0)