void gen_softreset(int state)
{
if (state)
{
/* Halt 68k */
m68k_pulse_halt();
/* Z80 bus is released & Z80 is reseted */
zstate = 0;
m68k_memory_map[0xa0].read8 = m68k_read_bus_8;
m68k_memory_map[0xa0].read16 = m68k_read_bus_16;
m68k_memory_map[0xa0].write8 = m68k_unused_8_w;
m68k_memory_map[0xa0].write16 = m68k_unused_16_w;
/* Assume default bank is $000000-$007FFF */
zbank = 0;
/* Reset YM2612 */
fm_reset(0);
}
else
{
/* Reset Cartridge Hardware */
cart_hw_reset(0);
/* 68k & Z80 could restart anywhere in VDP frame (Bonkers, Eternal Champions, X-Men 2) */
mcycles_68k = mcycles_z80 = (uint32)((MCYCLES_PER_LINE * lines_per_frame) * ((double)rand() / (double)RAND_MAX));
/* Reset 68k, Z80 & YM2612 */
m68k_pulse_reset();
z80_reset();
fm_reset(0);
}
}
void m68k_lockup_w_16 (unsigned int address, unsigned int data)
{
#ifdef LOGERROR
error ("Lockup %08X = %04X (%08X)\n", address, data, m68k_get_reg (NULL, M68K_REG_PC));
#endif
if (!config.force_dtack)
{
m68k_pulse_halt();
}
}
void m68k_lockup_w_8 (unsigned int address, unsigned int data)
{
#ifdef LOGERROR
error ("Lockup %08X = %02X (%08X)\n", address, data, m68k_get_reg(M68K_REG_PC));
#endif
if (!config.force_dtack)
{
m68k_pulse_halt();
m68k.cycles = m68k.cycle_end;
}
}
unsigned int m68k_lockup_r_16 (unsigned int address)
{
#ifdef LOGERROR
error ("Lockup %08X.w (%08X)\n", address, m68k_get_reg (NULL, M68K_REG_PC));
#endif
if (!config.force_dtack)
{
m68k_pulse_halt();
}
return m68k_read_pcrelative_16(REG_PC);
}
unsigned int m68k_lockup_r_16 (unsigned int address)
{
#ifdef LOGERROR
error ("Lockup %08X.w (%08X)\n", address, m68k_get_reg(M68K_REG_PC));
#endif
if (!config.force_dtack)
{
m68k_pulse_halt();
m68k.cycles = m68k.cycle_end;
}
address = m68k.pc;
return *(uint16 *)(m68k.memory_map[((address)>>16)&0xff].base + ((address) & 0xffff));
}
unsigned int m68k_lockup_r_8 (unsigned int address)
{
#ifdef LOGERROR
error ("Lockup %08X.b (%08X)\n", address, m68k_get_reg(M68K_REG_PC));
#endif
if (!config.force_dtack)
{
m68k_pulse_halt();
m68k.cycles = m68k.cycle_end;
}
address = m68k.pc | (address & 1);
return READ_BYTE(m68k.memory_map[((address)>>16)&0xff].base, (address) & 0xffff);
}
void gen_reset(int hard_reset)
{
/* System Reset */
if (hard_reset)
{
/* clear RAM */
memset (work_ram, 0x00, sizeof (work_ram));
memset (zram, 0x00, sizeof (zram));
}
else
{
/* reset YM2612 (on hard reset, this is done by sound_reset) */
fm_reset(0);
}
/* 68k & Z80 could restart anywhere in VDP frame (Bonkers, Eternal Champions, X-Men 2) */
mcycles_68k = mcycles_z80 = (uint32)((MCYCLES_PER_LINE * lines_per_frame) * ((double)rand() / (double)RAND_MAX));
//mcycles_68k = mcycles_z80 = 0;
if (system_hw == SYSTEM_PBC)
{
/* reset MS cartridge hardware */
sms_cart_reset();
/* Z80 is running */
zstate = 1;
/* 68k is halted */
m68k_pulse_halt();
}
else
{
/* reset MD cartridge hardware */
md_cart_reset(hard_reset);
/* Z80 bus is released & Z80 is reseted */
m68k_memory_map[0xa0].read8 = m68k_read_bus_8;
m68k_memory_map[0xa0].read16 = m68k_read_bus_16;
m68k_memory_map[0xa0].write8 = m68k_unused_8_w;
m68k_memory_map[0xa0].write16 = m68k_unused_16_w;
zstate = 0;
/* assume default bank is $000000-$007FFF */
zbank = 0;
/* TMSS & OS ROM support */
if (config.tmss & 1)
{
/* clear TMSS register */
memset(tmss, 0x00, sizeof(tmss));
/* VDP access is locked by default */
int i;
for (i=0xc0; i<0xe0; i+=8)
{
m68k_memory_map[i].read8 = m68k_lockup_r_8;
m68k_memory_map[i].read16 = m68k_lockup_r_16;
m68k_memory_map[i].write8 = m68k_lockup_w_8;
m68k_memory_map[i].write16 = m68k_lockup_w_16;
zbank_memory_map[i].read = zbank_lockup_r;
zbank_memory_map[i].write = zbank_lockup_w;
}
/* OS ROM is mapped at $000000-$0007FF */
if (config.tmss & 2)
{
m68k_memory_map[0].base = bios_rom;
}
}
/* reset 68k */
m68k_pulse_reset();
}
/* reset Z80 */
z80_reset();
}
