/*******************************************
Restart emulation when loading a new game
********************************************/
void reloadrom(void)
{
/* Cartridge "Hot Swap" support (make sure system has already been inited once and use cartridges) */
if ((config.hot_swap == 3) && ((system_hw != SYSTEM_MCD) || scd.cartridge.boot))
{
/* Only initialize cartridge hardware */
if ((system_hw & SYSTEM_PBC) == SYSTEM_MD)
{
/* 16-bit cartridge */
md_cart_init();
md_cart_reset(1);
}
else
{
/* 8-bit cartridge */
sms_cart_init();
sms_cart_reset();
}
}
/* Disc Swap support (automatically enabled if CD tray is open) */
else if ((system_hw != SYSTEM_MCD) || (cdd.status != CD_OPEN))
{
/* Initialize audio emulation */
interlaced = 0;
audio_init(SAMPLERATE_48KHZ, get_framerate());
/* Switch virtual system on */
system_init();
system_reset();
/* Allow hot swap */
config.hot_swap |= 2;
}
/* Auto-Load Backup RAM */
slot_autoload(0,config.s_device);
/* Auto-Load State */
slot_autoload(config.s_default,config.s_device);
/* Load Cheat file */
CheatLoad();
}
void gen_init(void)
{
int i;
/* initialize 68k */
m68k_set_cpu_type(M68K_CPU_TYPE_68000);
m68k_init();
/* initialize Z80 */
z80_init(0,z80_irq_callback);
/* initialize 68k memory map */
/* $000000-$7FFFFF is affected to cartridge area (see md_cart.c) */
for (i=0x80; i<0x100; i++)
{
/* $800000-$FFFFFF is affected to WRAM (see VDP DMA) */
m68k_memory_map[i].base = work_ram;
m68k_memory_map[i].read8 = NULL;
m68k_memory_map[i].read16 = NULL;
m68k_memory_map[i].write8 = NULL;
m68k_memory_map[i].write16 = NULL;
zbank_memory_map[i].read = NULL;
zbank_memory_map[i].write = NULL;
}
/* initialize 68k memory handlers */
for (i=0x80; i<0xe0; i++)
{
/* $800000-$DFFFFF : illegal area by default */
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;
}
/* $A10000-$A1FFFF : I/O & Control registers */
m68k_memory_map[0xa1].read8 = ctrl_io_read_byte;
m68k_memory_map[0xa1].read16 = ctrl_io_read_word;
m68k_memory_map[0xa1].write8 = ctrl_io_write_byte;
m68k_memory_map[0xa1].write16 = ctrl_io_write_word;
zbank_memory_map[0xa1].read = zbank_read_ctrl_io;
zbank_memory_map[0xa1].write = zbank_write_ctrl_io;
/* $C0xxxx, $C8xxxx, $D0xxxx, $D8xxxx : VDP ports */
for (i=0xc0; i<0xe0; i+=8)
{
m68k_memory_map[i].read8 = vdp_read_byte;
m68k_memory_map[i].read16 = vdp_read_word;
m68k_memory_map[i].write8 = vdp_write_byte;
m68k_memory_map[i].write16 = vdp_write_word;
zbank_memory_map[i].read = zbank_read_vdp;
zbank_memory_map[i].write = zbank_write_vdp;
}
/* MS COMPATIBILITY mode */
if (system_hw == SYSTEM_PBC)
{
/* initialize Z80 read handler */
/* NB: memory map & write handler are defined by cartridge hardware */
z80_readmem = z80_sms_memory_r;
/* initialize Z80 ports handlers */
z80_writeport = z80_sms_port_w;
z80_readport = z80_sms_port_r;
/* initialize MS cartridge hardware */
sms_cart_init();
}
else
{
/* PICO hardware */
if (system_hw == SYSTEM_PICO)
{
/* additional registers mapped to $800000-$80FFFF */
m68k_memory_map[0x80].read8 = pico_read_byte;
m68k_memory_map[0x80].read16 = pico_read_word;
m68k_memory_map[0x80].write8 = m68k_unused_8_w;
m68k_memory_map[0x80].write16 = m68k_unused_16_w;
/* there is no I/O area (Notaz) */
m68k_memory_map[0xa1].read8 = m68k_read_bus_8;
m68k_memory_map[0xa1].read16 = m68k_read_bus_16;
m68k_memory_map[0xa1].write8 = m68k_unused_8_w;
m68k_memory_map[0xa1].write16 = m68k_unused_16_w;
/* page registers */
pico_current = 0x00;
pico_page[0] = 0x00;
pico_page[1] = 0x01;
pico_page[2] = 0x03;
pico_page[3] = 0x07;
pico_page[4] = 0x0F;
pico_page[5] = 0x1F;
pico_page[6] = 0x3F;
}
/* initialize Z80 memory map */
/* $0000-$3FFF is mapped to Z80 RAM (8K mirrored) */
/* $4000-$FFFF is mapped to hardware but Z80.PC should never point there */
for (i=0; i<64; i++)
{
z80_readmap[i] = &zram[(i & 7) << 10];
}
/* initialize Z80 memory handlers */
z80_writemem = z80_md_memory_w;
z80_readmem = z80_md_memory_r;
/* initialize Z80 port handlers */
z80_writeport = z80_unused_port_w;
z80_readport = z80_unused_port_r;
/* initialize MD cartridge hardware */
md_cart_init();
}
}
int Application::loadROM(const char* filename)
{
LOGD("NDK:LoadingRom: %s", filename);
if (_romLoaded)
{
// TODO: close genesis
// save sram
saveSRam(_sramDir);
_romLoaded = false;
}
/* load ROM file */
if (!load_rom((char*)filename))
{
LOGD("Error loading rom!");
return NATIVE_ERROR;
}
// store current rom
strcpy(_currentRom, filename);
// controllers options
config.gun_cursor[0] = 1;
config.gun_cursor[1] = 1;
config.invert_mouse = 0;
config.s_device = 0;
LOGD("GenesisPlus Hardware: %d", system_hw);
if (system_hw == SYSTEM_MEGADRIVE || system_hw == SYSTEM_GENESIS)
{
Input.setButtonVisibility(BUTTON_INDEX_C, true);
Input.setButtonVisibility(BUTTON_INDEX_X, true);
Input.setButtonVisibility(BUTTON_INDEX_Y, true);
Input.setButtonVisibility(BUTTON_INDEX_Z, true);
input.system[0] = SYSTEM_MD_GAMEPAD;
input.system[1] = SYSTEM_MD_GAMEPAD;
config.input[0].padtype = DEVICE_PAD6B;
}
else if (system_hw == SYSTEM_PBC)
{
Input.setButtonVisibility(BUTTON_INDEX_C, false);
Input.setButtonVisibility(BUTTON_INDEX_X, false);
Input.setButtonVisibility(BUTTON_INDEX_Y, false);
Input.setButtonVisibility(BUTTON_INDEX_Z, false);
input.system[0] = SYSTEM_MS_GAMEPAD;
input.system[1] = SYSTEM_MS_GAMEPAD;
config.input[0].padtype = DEVICE_PAD2B;
}
input_init();
// hot-swap previous & current cartridge
bool hotswap = config.hot_swap && cart.romsize;
//cart.romsize = size;
if(hotswap)
{
if (system_hw == SYSTEM_PBC)
{
sms_cart_init();
sms_cart_reset();
}
else
{
md_cart_init();
md_cart_reset(1);
}
}
else
{
// initialize audio emulation
audio_init(_sampleRate, vdp_pal ? 50.0 : 60.0);
// system power ON
system_init();
system_reset();
}
// sram
loadSRam(_currentRom);
// mark video updated
bitmap.viewport.changed |= 1;
/* load Cheats */
//CheatLoad();
_ssize = 0;
_romLoaded = true;
return NATIVE_OK;
}
