void AY8910Write(int a, int data)
{
struct AY8910 *PSG = &AYPSG;
if (a & 1) { /* Data port */
AYWriteReg(PSG->register_latch, data);
} else { /* Register port */
PSG->register_latch = data & 0x0f;
}
}
void AY8910Write(INT32 chip, INT32 a, INT32 data)
{
struct AY8910 *PSG = &AYPSG[chip];
#if defined FBA_DEBUG
#ifdef __GNUC__
if (!DebugSnd_AY8910Initted) bprintf(PRINT_ERROR, _T("AY8910Write called without init\n"));
if (chip > num) bprintf(PRINT_ERROR, _T("AY8910Write called with invalid chip number %x\n"), chip);
#endif
#endif
if (a & 1)
{ /* Data port */
AYWriteReg(chip,PSG->register_latch,data);
}
else
{ /* Register port */
PSG->register_latch = data & 0x0f;
}
}
void cgenie_state::machine_reset()
{
address_space &space = m_maincpu->space(AS_PROGRAM);
UINT8 *ROM = memregion("maincpu")->base();
/* reset the AY8910 to be quiet, since the cgenie BIOS doesn't */
AYWriteReg(0, 0, 0);
AYWriteReg(0, 1, 0);
AYWriteReg(0, 2, 0);
AYWriteReg(0, 3, 0);
AYWriteReg(0, 4, 0);
AYWriteReg(0, 5, 0);
AYWriteReg(0, 6, 0);
AYWriteReg(0, 7, 0x3f);
AYWriteReg(0, 8, 0);
AYWriteReg(0, 9, 0);
AYWriteReg(0, 10, 0);
/* wipe out color RAM */
memset(&ROM[0x0f000], 0x00, 0x0400);
/* wipe out font RAM */
memset(&ROM[0x0f400], 0xff, 0x0400);
if( ioport("DSW0")->read() & 0x80 )
{
logerror("cgenie floppy discs enabled\n");
}
else
{
logerror("cgenie floppy discs disabled\n");
}
/* copy DOS ROM, if enabled or wipe out that memory area */
if( ioport("DSW0")->read() & 0x40 )
{
if ( ioport("DSW0")->read() & 0x80 )
{
space.install_read_bank(0xc000, 0xdfff, "bank10");
space.nop_write(0xc000, 0xdfff);
membank("bank10")->set_base(&ROM[0x0c000]);
logerror("cgenie DOS enabled\n");
memcpy(&ROM[0x0c000],&ROM[0x10000], 0x2000);
}
else
{
space.nop_readwrite(0xc000, 0xdfff);
logerror("cgenie DOS disabled (no floppy image given)\n");
}
}
else
{
space.nop_readwrite(0xc000, 0xdfff);
logerror("cgenie DOS disabled\n");
memset(&memregion("maincpu")->base()[0x0c000], 0x00, 0x2000);
}
/* copy EXT ROM, if enabled or wipe out that memory area */
if (ioport("DSW0")->read() & 0x20 && m_cart->exists())
{
m_maincpu->space(AS_PROGRAM).install_read_handler(0xe000, 0xefff, read8_delegate(FUNC(generic_slot_device::read_rom),(generic_slot_device*)m_cart));
logerror("cgenie EXT enabled\n");
}
else
{
space.nop_readwrite(0xe000, 0xefff);
logerror("cgenie EXT disabled\n");
}
m_cass_level = 0;
m_cass_bit = 1;
}
