static WRITE8_HANDLER(pcat_nit_rombank_w)
{
logerror( "rom bank #%02x at PC=%08X\n", data, cpu_get_pc(space->cpu) );
if ( data & 0x40 )
{
// rom bank
memory_install_read_bank(space, 0x000d8000, 0x000dffff, 0, 0, "rombank" );
memory_unmap_write(space, 0x000d8000, 0x000dffff, 0, 0);
if ( data & 0x80 )
{
memory_set_bank(space->machine, "rombank", (data & 0x3f) | 0x40 );
}
else
{
memory_set_bank(space->machine, "rombank", data & 0x3f );
}
}
else
{
// nvram bank
memory_unmap_read(space, 0x000d8000, 0x000dffff, 0, 0);
memory_unmap_write(space, 0x000d8000, 0x000dffff, 0, 0);
memory_install_read_bank(space, 0x000d8000, 0x000d9fff, 0, 0, "nvrambank" );
memory_install_write_bank(space, 0x000d8000, 0x000d9fff, 0, 0, "nvrambank" );
memory_set_bankptr(space->machine, "nvrambank", space->machine->generic.nvram.u8);
}
}
static WRITE16_HANDLER( arcadia_multibios_change_game )
{
if (data == 0)
memory_install_read_bank(space, 0x800000, 0x97ffff, 0, 0, "bank2");
else
memory_nop_read(space, 0x800000, 0x97ffff, 0, 0);
}
static DRIVER_INIT( ssf2mdb )
{
memory_nop_write(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0xA130F0, 0xA130FF, 0, 0); // custom banking is disabled (!)
memory_install_read_bank(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0x400000, 0x5fffff, 0, 0, "bank5");
memory_unmap_write(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0x400000, 0x5fffff, 0, 0);
memory_set_bankptr(machine, "bank5", machine->region( "maincpu" )->base() + 0x400000 );
memory_install_read16_handler(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0x770070, 0x770075, 0, 0, ssf2mdb_dsw_r );
megadrive_6buttons_pad = 1;
DRIVER_INIT_CALL(megadrij);
}
static void vendetta_video_banking( running_machine *machine, int select )
{
vendetta_state *state = (vendetta_state *)machine->driver_data;
const address_space *space = cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM);
if (select & 1)
{
memory_install_read_bank(space, state->video_banking_base + 0x2000, state->video_banking_base + 0x2fff, 0, 0, "bank4" );
memory_install_write8_handler(space, state->video_banking_base + 0x2000, state->video_banking_base + 0x2fff, 0, 0, paletteram_xBBBBBGGGGGRRRRR_be_w );
memory_install_readwrite8_device_handler(space, state->k053246, state->video_banking_base + 0x0000, state->video_banking_base + 0x0fff, 0, 0, k053247_r, k053247_w );
memory_set_bankptr(machine, "bank4", machine->generic.paletteram.v);
}
else
{
memory_install_readwrite8_handler(space, state->video_banking_base + 0x2000, state->video_banking_base + 0x2fff, 0, 0, vendetta_K052109_r, vendetta_K052109_w );
memory_install_readwrite8_device_handler(space, state->k052109, state->video_banking_base + 0x0000, state->video_banking_base + 0x0fff, 0, 0, k052109_r, k052109_w );
}
}
static DRIVER_INIT( cashquiz )
{
UINT8 *ROM;
int i;
/* decrypt program code */
ROM = memory_region(machine, "maincpu");
for( i = 0; i < 0x4000; i++ )
ROM[i] = BITSWAP8(ROM[i],0,1,2,3,4,5,6,7);
/* decrypt questions */
ROM = memory_region(machine, "user1");
for( i = 0; i < 0x40000; i++ )
ROM[i] = BITSWAP8(ROM[i],0,1,2,3,4,5,6,7);
/* questions banking handlers */
memory_install_write8_handler(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0x4000, 0x4000, 0, 0, cashquiz_question_bank_high_w);
memory_install_write8_handler(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0x4001, 0x4001, 0, 0, cashquiz_question_bank_low_w);
// 8 independents banks for questions
memory_install_read_bank(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0x5000, 0x50ff, 0, 0, "bank1");
memory_install_read_bank(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0x5100, 0x51ff, 0, 0, "bank2");
memory_install_read_bank(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0x5200, 0x52ff, 0, 0, "bank3");
memory_install_read_bank(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0x5300, 0x53ff, 0, 0, "bank4");
memory_install_read_bank(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0x5400, 0x54ff, 0, 0, "bank5");
memory_install_read_bank(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0x5500, 0x55ff, 0, 0, "bank6");
memory_install_read_bank(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0x5600, 0x56ff, 0, 0, "bank7");
memory_install_read_bank(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0x5700, 0x57ff, 0, 0, "bank8");
// setup default banks
memory_set_bankptr(machine, "bank1", memory_region(machine, "user1") + 0x100*0 );
memory_set_bankptr(machine, "bank2", memory_region(machine, "user1") + 0x100*1 );
memory_set_bankptr(machine, "bank3", memory_region(machine, "user1") + 0x100*2 );
memory_set_bankptr(machine, "bank4", memory_region(machine, "user1") + 0x100*3 );
memory_set_bankptr(machine, "bank5", memory_region(machine, "user1") + 0x100*4 );
memory_set_bankptr(machine, "bank6", memory_region(machine, "user1") + 0x100*5 );
memory_set_bankptr(machine, "bank7", memory_region(machine, "user1") + 0x100*6 );
memory_set_bankptr(machine, "bank8", memory_region(machine, "user1") + 0x100*7 );
}
void okim6295_device::set_bank_base(offs_t base)
{
// flush out anything pending
stream_update(m_stream);
// if we are setting a non-zero base, and we have no bank, allocate one
if (!m_bank_installed && base != 0)
{
// override our memory map with a bank
memory_install_read_bank(space(), 0x00000, 0x3ffff, 0, 0, tag());
m_bank_installed = true;
}
// if we have a bank number, set the base pointer
if (m_bank_installed)
{
m_bank_offs = base;
memory_set_bankptr(&m_machine, tag(), m_region->base() + base);
}
}
static void update_memory_mapping(running_machine *machine, struct memory_mapper_chip *chip, int decrypt)
{
int rgnum;
if (LOG_MEMORY_MAP) mame_printf_debug("----\nRemapping:\n");
/* first reset everything back to the beginning */
memory_install_readwrite16_handler(cpu_get_address_space(chip->cpu, ADDRESS_SPACE_PROGRAM), 0x000000, 0xffffff, 0, 0, segaic16_memory_mapper_lsb_r, segaic16_memory_mapper_lsb_w);
/* loop over the regions */
for (rgnum = 0; chip->map[rgnum].regbase != 0; rgnum++)
{
static const offs_t region_size_map[4] = { 0x00ffff, 0x01ffff, 0x07ffff, 0x1fffff };
const segaic16_memory_map_entry *rgn = &chip->map[rgnum];
offs_t region_size = region_size_map[chip->regs[rgn->regbase] & 3];
offs_t region_base = (chip->regs[rgn->regbase + 1] << 16) & ~region_size;
offs_t region_mirror = rgn->mirror & region_size;
offs_t region_start = region_base + (rgn->regoffs & region_size);
offs_t region_end = region_start + ((rgn->length - 1 < region_size) ? rgn->length - 1 : region_size);
const char *writebank = rgn->writebank;
write16_space_func write = rgn->write;
const char *readbank = rgn->readbank;
read16_space_func read = rgn->read;
/* ROM areas need extra clamping */
if (rgn->romoffset != ~0)
{
offs_t romsize = chip->cpu->region()->bytes();
if (region_start >= romsize)
read = NULL;
else if (region_start + rgn->length > romsize)
region_end = romsize - 1;
}
/* map it */
if (read != NULL)
memory_install_read16_handler(cpu_get_address_space(chip->cpu, ADDRESS_SPACE_PROGRAM), region_start, region_end, 0, region_mirror, read);
else if (readbank != NULL)
memory_install_read_bank(cpu_get_address_space(chip->cpu, ADDRESS_SPACE_PROGRAM), region_start, region_end, 0, region_mirror, readbank);
if (write != NULL)
memory_install_write16_handler(cpu_get_address_space(chip->cpu, ADDRESS_SPACE_PROGRAM), region_start, region_end, 0, region_mirror, write);
else if (writebank != NULL)
memory_install_write_bank(cpu_get_address_space(chip->cpu, ADDRESS_SPACE_PROGRAM), region_start, region_end, 0, region_mirror, writebank);
/* set the bank pointer */
if (readbank != NULL)
{
if (rgn->base != NULL)
{
memory_configure_bank(machine, readbank, 0, 1, *rgn->base, 0);
memory_set_bank(machine, readbank, 0);
}
else if (rgn->romoffset != ~0)
{
UINT8 *decrypted = NULL;
if (decrypt)
{
decrypted = (UINT8 *)fd1094_get_decrypted_base();
if (!decrypted)
decrypted = (UINT8 *)fd1089_get_decrypted_base();
}
memory_configure_bank(machine, readbank, 0, 1, chip->cpu->region()->base() + region_start, 0);
if (decrypted)
memory_configure_bank_decrypted(machine, readbank, 0, 1, decrypted + region_start, 0);
memory_set_bank(machine, readbank, 0);
}
}
if (LOG_MEMORY_MAP) mame_printf_debug(" %06X-%06X (%06X) = %s\n", region_start, region_end, region_mirror, rgn->name);
}
}
