void nes_namcot163_device::set_mirror(uint8_t page, uint8_t data)
{
if (data < 0xe0)
set_nt_page(page, VROM, data, 0);
else
set_nt_page(page, CIRAM, data & 0x01, 1);
}
void nes_ks7037_device::update_prg()
{
prg8_89(m_reg[6]);
prg8_ab(0xfe);
prg8_cd(m_reg[7]);
prg8_ef(0xff);
set_nt_page(0, CIRAM, m_reg[2] & 1, 1);
set_nt_page(1, CIRAM, m_reg[3] & 1, 1);
set_nt_page(2, CIRAM, m_reg[4] & 1, 1);
set_nt_page(3, CIRAM, m_reg[5] & 1, 1);
}
void nes_exrom_device::set_mirror(int page, int src)
{
switch (src)
{
case 0:
set_nt_page(page, CIRAM, 0, 1);
break;
case 1:
set_nt_page(page, CIRAM, 1, 1);
break;
case 2:
set_nt_page(page, EXRAM, 0, 1);
break;
case 3:
set_nt_page(page, MMC5FILL, 0, 0);
break;
default:
fatalerror("This should never happen\n");
}
}
void nes_exrom_device::set_mirror(int page, int src)
{
switch (src)
{
case 0: /* CIRAM0 */
set_nt_page(page, CIRAM, 0, 1);
break;
case 1: /* CIRAM1 */
set_nt_page(page, CIRAM, 1, 1);
break;
case 2: /* ExRAM */
set_nt_page(page, EXRAM, 0, 1); // actually only works during rendering.
break;
case 3: /* Fill Registers */
set_nt_page(page, MMC5FILL, 0, 0);
break;
default:
fatalerror("This should never happen\n");
break;
}
}
