void tc8830f_device::device_post_load()
{
device_clock_changed();
}
void tc8830f_device::write_p(UINT8 data)
{
m_stream->update();
data &= 0xf;
if (m_cmd_rw == 0)
{
// select command
m_command = data;
switch (m_command)
{
// immediate commands
case 0x1:
break;
case 0x2:
m_playing = true;
break;
case 0x3:
m_playing = false;
break;
// multi-nibble commands
case 0x4: case 0x5: case 0x6: case 0x7:
m_cmd_rw = 1;
break;
case 0x8: case 0x9: case 0xa: case 0xb:
logerror("tc8830f: Unemulated command %X\n", m_command);
break;
default:
logerror("tc8830f: Invalid command %X\n", m_command);
break;
}
}
else
{
// write command
switch (m_command)
{
case 0x4:
// ADLD1: set address counter
m_address = (m_address & ~(0xf << (m_cmd_rw*4))) | (data << (m_cmd_rw*4));
if (m_cmd_rw == 5)
{
m_address &= m_mem_mask;
m_bitcount = 0;
m_cmd_rw = -1;
}
break;
case 0x5:
// ADLD2: set address stop
m_stop_address = (m_stop_address & ~(0xf << (m_cmd_rw*4))) | (data << (m_cmd_rw*4));
if (m_cmd_rw == 5)
{
m_stop_address &= m_mem_mask;
m_cmd_rw = -1;
}
break;
case 0x6:
// CNDT: d0-d1: bitrate, d2: enable overflow
m_bitrate = data & 3;
device_clock_changed();
m_cmd_rw = -1;
break;
case 0x7:
// LABEL: set phrase
if (m_cmd_rw == 1)
{
m_phrase = (m_phrase & 0x30) | data;
}
else
{
m_phrase = (m_phrase & 0x0f) | (data << 4 & 0x30);
// update addresses and start
UINT8 offs = m_phrase * 4;
m_address = (m_mem_base[offs] | m_mem_base[offs|1]<<8 | m_mem_base[offs|2]<<16) & m_mem_mask;
offs += 4;
m_stop_address = (m_mem_base[offs] | m_mem_base[offs|1]<<8 | m_mem_base[offs|2]<<16) & m_mem_mask;
m_bitcount = 0;
m_prevbits = 0;
m_delta = 1;
m_output = 0;
m_playing = true;
m_cmd_rw = -1;
}
break;
default:
m_cmd_rw = -1;
break;
}
m_cmd_rw++;
}
}
void okim6295_device::device_post_load()
{
set_bank_base(m_bank_offs, true);
device_clock_changed();
}
void okim6295_device::set_pin7(int pin7)
{
m_pin7_state = pin7;
device_clock_changed();
}
void okim6295_device::device_post_load()
{
device_clock_changed();
}