/* Pulse the RESET line on the CPU */
void m68k_pulse_reset(m68ki_cpu_core *m68k)
{
/* Clear all stop levels and eat up all remaining cycles */
m68k->stopped = 0;
if (m68k->remaining_cycles > 0)
m68k->remaining_cycles = 0;
#if M68K_EMULATE_ADDRESS_ERROR
m68k->run_mode = RUN_MODE_BERR_AERR_RESET;
#endif
/* Turn off tracing */
m68k->t1_flag = m68k->t0_flag = 0;
m68ki_clear_trace();
/* Interrupt mask to level 7 */
m68k->int_mask = 0x0700;
m68k->int_level = 0;
m68k->virq_state = 0;
/* Reset VBR */
m68k->vbr = 0;
/* Go to supervisor mode */
m68ki_set_sm_flag(m68k, SFLAG_SET | MFLAG_CLEAR);
/* Invalidate the prefetch queue */
/* Set to arbitrary number since our first fetch is from 0 */
#if M68K_EMULATE_PREFETCH
m68k->pref_addr = 0x1000;
#endif
/* Read the initial stack pointer and program counter */
m68ki_jump(m68k, 0);
REG_SP = m68ki_read_imm_32(m68k);
REG_PC = m68ki_read_imm_32(m68k);
m68ki_jump(m68k, REG_PC);
#if M68K_EMULATE_ADDRESS_ERROR
m68k->run_mode = RUN_MODE_NORMAL;
#endif
m68k->reset_cycles = m68k->cyc_exception[EXCEPTION_RESET];
}
// Pulse the RESET line on the CPU
void m68k_pulse_reset(void)
{
static uint32_t emulation_initialized = 0;
// The first call to this function initializes the opcode handler jump table
if (!emulation_initialized)
{
#if 0
m68ki_build_opcode_table();
m68k_set_int_ack_callback(NULL);
m68k_set_bkpt_ack_callback(NULL);
m68k_set_reset_instr_callback(NULL);
m68k_set_pc_changed_callback(NULL);
m68k_set_fc_callback(NULL);
m68k_set_instr_hook_callback(NULL);
#else
// Build opcode handler table here...
read_table68k();
do_merges();
BuildCPUFunctionTable();
#endif
emulation_initialized = 1;
}
// if (CPU_TYPE == 0) /* KW 990319 */
// m68k_set_cpu_type(M68K_CPU_TYPE_68000);
#if 0
/* Clear all stop levels and eat up all remaining cycles */
CPU_STOPPED = 0;
SET_CYCLES(0);
/* Turn off tracing */
FLAG_T1 = FLAG_T0 = 0;
m68ki_clear_trace();
/* Interrupt mask to level 7 */
FLAG_INT_MASK = 0x0700;
/* Reset VBR */
REG_VBR = 0;
/* Go to supervisor mode */
m68ki_set_sm_flag(SFLAG_SET | MFLAG_CLEAR);
/* Invalidate the prefetch queue */
#if M68K_EMULATE_PREFETCH
/* Set to arbitrary number since our first fetch is from 0 */
CPU_PREF_ADDR = 0x1000;
#endif /* M68K_EMULATE_PREFETCH */
/* Read the initial stack pointer and program counter */
m68ki_jump(0);
REG_SP = m68ki_read_imm_32();
REG_PC = m68ki_read_imm_32();
m68ki_jump(REG_PC);
#else
regs.spcflags = 0;
regs.stopped = 0;
regs.remainingCycles = 0;
regs.intmask = 0x07;
regs.s = 1; // Supervisor mode ON
// Read initial SP and PC
m68k_areg(regs, 7) = m68k_read_memory_32(0);
m68k_setpc(m68k_read_memory_32(4));
refill_prefetch(m68k_getpc(), 0);
#endif
}
