// license:BSD-3-Clause
// copyright-holders:Curt Coder
/***************************************************************************
Intel 8274 Multi-Protocol Serial Controller emulation
NEC uPD7201 Multiprotocol Serial Communications Controller emulation
Z80-DART Dual Asynchronous Receiver/Transmitter emulation
Z80-SIO/0/1/2/3/4 Serial Input/Output Controller emulation
****************************************************************************
_____ _____
CLK 1 |* \_/ | 40 Vcc
_RESET 2 | | 39 _CTSA
_CDA 3 | | 38 _RTSA
_RxCB 4 | | 37 TxDA
_CDB 5 | | 36 _TxCA
_CTSB 6 | | 35 _RxCA
_TxCB 7 | | 34 RxDA
TxDB 8 | | 33 _SYNDETA
RxDB 9 | | 32 RDYA/RxDRQA
_RTSB/_SYNDETB 10 | I8274 | 31 _DTRA
RDYB/_TxDRQA 11 | | 30 _IPO/TxDRQB
D7 12 | | 29 _IPI/RxDRQB
D6 13 | | 28 _INT
D5 14 | | 27 _INTA
D4 15 | | 26 _DTRB
D3 16 | | 25 A0
D2 17 | | 24 A1
D1 18 | | 23 _CS
D0 19 | | 22 _RD
Vss 20 |_____________| 21 _WR
_____ _____
CLK 1 |* \_/ | 40 Vcc
_RESET 2 | | 39 _CTSA
_DCDA 3 | | 38 _RTSA
_RxCB 4 | | 37 TxDA
_DCDB 5 | | 36 _TxCA
_CTSB 6 | | 35 _RxCA
_TxCB 7 | | 34 RxDA
TxDB 8 | | 33 _SYNCA
RxDB 9 | | 32 _WAITA/DRQRxA
_RTSB/_SYNCB 10 | UPD7201 | 31 _DTRA/_HAO
_WAITB/_DRQTxA 11 | | 30 _PRO/DRQTxB
D7 12 | | 29 _PRI/DRQRxB
D6 13 | | 28 _INT
D5 14 | | 27 _INTAK
D4 15 | | 26 _DTRB/_HAI
D3 16 | | 25 B/_A
D2 17 | | 24 C/_D
D1 18 | | 23 _CS
D0 19 | | 22 _RD
Vss 20 |_____________| 21 _WR
_____ _____
D1 1 |* \_/ | 40 D0
D3 2 | | 39 D2
D5 3 | | 38 D4
D7 4 | | 37 D6
_INT 5 | | 36 _IORQ
IEI 6 | | 35 _CE
IEO 7 | | 34 B/_A
_M1 8 | | 33 C/_D
Vdd 9 | | 32 _RD
_W/RDYA 10 | Z80-DART | 31 GND
_RIA 11 | Z8470 | 30 _W/RDYB
RxDA 12 | | 29 _RIB
_RxCA 13 | | 28 RxDB
_TxCA 14 | | 27 _RxTxCB
TxDA 15 | | 26 TxDB
_DTRA 16 | | 25 _DTRB
_RTSA 17 | | 24 _RTSB
_CTSA 18 | | 23 _CTSB
_DCDA 19 | | 22 _DCDB
CLK 20 |_____________| 21 _RESET
_____ _____
D1 1 |* \_/ | 40 D0
D3 2 | | 39 D2
D5 3 | | 38 D4
D7 4 | | 37 D6
_INT 5 | | 36 _IORQ
IEI 6 | | 35 _CE
IEO 7 | | 34 B/_A
_M1 8 | | 33 C/_D
Vdd 9 | | 32 _RD
_W/RDYA 10 | Z80-SIO/0 | 31 GND
_SYNCA 11 | Z8440 | 30 _W/RDYB
RxDA 12 | | 29 _SYNCB
_RxCA 13 | | 28 RxDB
_TxCA 14 | | 27 _RxTxCB
TxDA 15 | | 26 TxDB
_DTRA 16 | | 25 _DTRB
_RTSA 17 | | 24 _RTSB
_CTSA 18 | | 23 _CTSB
_DCDA 19 | | 22 _DCDB
CLK 20 |_____________| 21 _RESET
_____ _____
D1 1 |* \_/ | 40 D0
D3 2 | | 39 D2
D5 3 | | 38 D4
D7 4 | | 37 D6
_INT 5 | | 36 _IORQ
IEI 6 | | 35 _CE
IEO 7 | | 34 B/_A
_M1 8 | | 33 C/_D
Vdd 9 | | 32 _RD
_W/RDYA 10 | Z80-SIO/1 | 31 GND
_SYNCA 11 | Z8441 | 30 _W/RDYB
RxDA 12 | | 29 _SYNCB
_RxCA 13 | | 28 RxDB
_TxCA 14 | | 27 _RxCB
TxDA 15 | | 26 _TxCB
_DTRA 16 | | 25 TxDB
_RTSA 17 | | 24 _RTSB
_CTSA 18 | | 23 _CTSB
_DCDA 19 | | 22 _DCDB
CLK 20 |_____________| 21 _RESET
_____ _____
D1 1 |* \_/ | 40 D0
D3 2 | | 39 D2
D5 3 | | 38 D4
D7 4 | | 37 D6
_INT 5 | | 36 _IORQ
IEI 6 | | 35 _CE
IEO 7 | | 34 B/_A
_M1 8 | | 33 C/_D
Vdd 9 | | 32 _RD
_W/RDYA 10 | Z80-SIO/2 | 31 GND
_SYNCA 11 | Z8442 | 30 _W/RDYB
RxDA 12 | | 29 _RxDB
_RxCA 13 | | 28 _RxCB
_TxCA 14 | | 27 _TxCB
TxDA 15 | | 26 TxDB
_DTRA 16 | | 25 _DTRB
_RTSA 17 | | 24 _RTSB
_CTSA 18 | | 23 _CTSB
_DCDA 19 | | 22 _DCDB
CLK 20 |_____________| 21 _RESET
***************************************************************************/
#ifndef __Z80DART_H__
#define __Z80DART_H__
#include "emu.h"
#include "cpu/z80/z80daisy.h"
//**************************************************************************
// DEVICE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_Z80DART_ADD(_tag, _clock, _rxa, _txa, _rxb, _txb) \
MCFG_DEVICE_ADD(_tag, Z80DART, _clock) \
MCFG_Z80DART_OFFSETS(_rxa, _txa, _rxb, _txb)
#define MCFG_Z80SIO0_ADD(_tag, _clock, _rxa, _txa, _rxb, _txb) \
MCFG_DEVICE_ADD(_tag, Z80SIO0, _clock) \
MCFG_Z80DART_OFFSETS(_rxa, _txa, _rxb, _txb)
#define MCFG_Z80SIO1_ADD(_tag, _clock, _rxa, _txa, _rxb, _txb) \
MCFG_DEVICE_ADD(_tag, Z80SIO1, _clock) \
MCFG_Z80DART_OFFSETS(_rxa, _txa, _rxb, _txb)
#define MCFG_Z80SIO2_ADD(_tag, _clock, _rxa, _txa, _rxb, _txb) \
MCFG_DEVICE_ADD(_tag, Z80SIO2, _clock) \
MCFG_Z80DART_OFFSETS(_rxa, _txa, _rxb, _txb)
#define MCFG_Z80SIO3_ADD(_tag, _clock, _rxa, _txa, _rxb, _txb) \
MCFG_DEVICE_ADD(_tag, Z80SIO3, _clock) \
MCFG_Z80DART_OFFSETS(_rxa, _txa, _rxb, _txb)
#define MCFG_Z80SIO4_ADD(_tag, _clock, _rxa, _txa, _rxb, _txb) \
MCFG_DEVICE_ADD(_tag, Z80SIO4, _clock) \
MCFG_Z80DART_OFFSETS(_rxa, _txa, _rxb, _txb)
#define MCFG_I8274_ADD(_tag, _clock, _rxa, _txa, _rxb, _txb) \
MCFG_DEVICE_ADD(_tag, I8274, _clock) \
MCFG_Z80DART_OFFSETS(_rxa, _txa, _rxb, _txb)
#define MCFG_UPD7201_ADD(_tag, _clock, _rxa, _txa, _rxb, _txb) \
MCFG_DEVICE_ADD(_tag, UPD7201, _clock) \
MCFG_Z80DART_OFFSETS(_rxa, _txa, _rxb, _txb)
#define MCFG_Z80DART_OFFSETS(_rxa, _txa, _rxb, _txb) \
z80dart_device::configure_channels(*device, _rxa, _txa, _rxb, _txb);
#define MCFG_Z80DART_OUT_TXDA_CB(_devcb) \
devcb = &z80dart_device::set_out_txda_callback(*device, DEVCB_##_devcb);
#define MCFG_Z80DART_OUT_DTRA_CB(_devcb) \
devcb = &z80dart_device::set_out_dtra_callback(*device, DEVCB_##_devcb);
#define MCFG_Z80DART_OUT_RTSA_CB(_devcb) \
devcb = &z80dart_device::set_out_rtsa_callback(*device, DEVCB_##_devcb);
#define MCFG_Z80DART_OUT_WRDYA_CB(_devcb) \
devcb = &z80dart_device::set_out_wrdya_callback(*device, DEVCB_##_devcb);
#define MCFG_Z80DART_OUT_SYNCA_CB(_devcb) \
devcb = &z80dart_device::set_out_synca_callback(*device, DEVCB_##_devcb);
#define MCFG_Z80DART_OUT_TXDB_CB(_devcb) \
devcb = &z80dart_device::set_out_txdb_callback(*device, DEVCB_##_devcb);
#define MCFG_Z80DART_OUT_DTRB_CB(_devcb) \
devcb = &z80dart_device::set_out_dtrb_callback(*device, DEVCB_##_devcb);
#define MCFG_Z80DART_OUT_RTSB_CB(_devcb) \
devcb = &z80dart_device::set_out_rtsb_callback(*device, DEVCB_##_devcb);
#define MCFG_Z80DART_OUT_WRDYB_CB(_devcb) \
devcb = &z80dart_device::set_out_wrdyb_callback(*device, DEVCB_##_devcb);
#define MCFG_Z80DART_OUT_SYNCB_CB(_devcb) \
devcb = &z80dart_device::set_out_syncb_callback(*device, DEVCB_##_devcb);
#define MCFG_Z80DART_OUT_INT_CB(_devcb) \
devcb = &z80dart_device::set_out_int_callback(*device, DEVCB_##_devcb);
#define MCFG_Z80DART_OUT_RXDRQA_CB(_devcb) \
devcb = &z80dart_device::set_out_rxdrqa_callback(*device, DEVCB_##_devcb);
#define MCFG_Z80DART_OUT_TXDRQA_CB(_devcb) \
devcb = &z80dart_device::set_out_txdrqa_callback(*device, DEVCB_##_devcb);
#define MCFG_Z80DART_OUT_RXDRQB_CB(_devcb) \
devcb = &z80dart_device::set_out_rxdrqb_callback(*device, DEVCB_##_devcb);
#define MCFG_Z80DART_OUT_TXDRQB_CB(_devcb) \
devcb = &z80dart_device::set_out_txdrqb_callback(*device, DEVCB_##_devcb);
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> z80dart_channel
class z80dart_device;
class z80dart_channel : public device_t,
public device_serial_interface
{
friend class z80dart_device;
public:
z80dart_channel(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock);
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
// device_serial_interface overrides
virtual void tra_callback() override;
virtual void tra_complete() override;
virtual void rcv_callback() override;
virtual void rcv_complete() override;
UINT8 control_read();
void control_write(UINT8 data);
UINT8 data_read();
void data_write(UINT8 data);
void receive_data(UINT8 data);
DECLARE_WRITE_LINE_MEMBER( write_rx );
DECLARE_WRITE_LINE_MEMBER( cts_w );
DECLARE_WRITE_LINE_MEMBER( dcd_w );
DECLARE_WRITE_LINE_MEMBER( ri_w );
DECLARE_WRITE_LINE_MEMBER( rxc_w );
DECLARE_WRITE_LINE_MEMBER( txc_w );
DECLARE_WRITE_LINE_MEMBER( sync_w );
int m_rxc;
int m_txc;
// register state
UINT8 m_rr[3]; // read register
UINT8 m_wr[6]; // write register
protected:
enum
{
INT_TRANSMIT = 0,
INT_EXTERNAL,
INT_RECEIVE,
INT_SPECIAL
};
enum
{
RR0_RX_CHAR_AVAILABLE = 0x01,
RR0_INTERRUPT_PENDING = 0x02,
RR0_TX_BUFFER_EMPTY = 0x04,
RR0_DCD = 0x08,
RR0_RI = 0x10,
RR0_SYNC_HUNT = 0x10, // not supported
RR0_CTS = 0x20,
RR0_TX_UNDERRUN = 0x40, // not supported
RR0_BREAK_ABORT = 0x80 // not supported
};
enum
{
RR1_ALL_SENT = 0x01,
RR1_RESIDUE_CODE_MASK = 0x0e, // not supported
RR1_PARITY_ERROR = 0x10,
RR1_RX_OVERRUN_ERROR = 0x20,
RR1_CRC_FRAMING_ERROR = 0x40,
RR1_END_OF_FRAME = 0x80 // not supported
};
enum
{
WR0_REGISTER_MASK = 0x07,
WR0_COMMAND_MASK = 0x38,
WR0_NULL = 0x00,
WR0_SEND_ABORT = 0x08, // not supported
WR0_RESET_EXT_STATUS = 0x10,
WR0_CHANNEL_RESET = 0x18,
WR0_ENABLE_INT_NEXT_RX = 0x20,
WR0_RESET_TX_INT = 0x28, // not supported
WR0_ERROR_RESET = 0x30,
WR0_RETURN_FROM_INT = 0x38, // not supported
WR0_CRC_RESET_CODE_MASK = 0xc0, // not supported
WR0_CRC_RESET_NULL = 0x00, // not supported
WR0_CRC_RESET_RX = 0x40, // not supported
WR0_CRC_RESET_TX = 0x80, // not supported
WR0_CRC_RESET_TX_UNDERRUN = 0xc0 // not supported
};
enum
{
WR1_EXT_INT_ENABLE = 0x01,
WR1_TX_INT_ENABLE = 0x02,
WR1_STATUS_VECTOR = 0x04,
WR1_RX_INT_MODE_MASK = 0x18,
WR1_RX_INT_DISABLE = 0x00,
WR1_RX_INT_FIRST = 0x08,
WR1_RX_INT_ALL_PARITY = 0x10, // not supported
WR1_RX_INT_ALL = 0x18,
WR1_WRDY_ON_RX_TX = 0x20, // not supported
WR1_WRDY_FUNCTION = 0x40, // not supported
WR1_WRDY_ENABLE = 0x80 // not supported
};
enum
{
WR2_DATA_XFER_INT = 0x00, // not supported
WR2_DATA_XFER_DMA_INT = 0x01, // not supported
WR2_DATA_XFER_DMA = 0x02, // not supported
WR2_DATA_XFER_ILLEGAL = 0x03, // not supported
WR2_DATA_XFER_MASK = 0x03, // not supported
WR2_PRIORITY = 0x04, // not supported
WR2_MODE_8085_1 = 0x00, // not supported
WR2_MODE_8085_2 = 0x08, // not supported
WR2_MODE_8086_8088 = 0x10, // not supported
WR2_MODE_ILLEGAL = 0x18, // not supported
WR2_MODE_MASK = 0x18, // not supported
WR2_VECTORED_INT = 0x20, // not supported
WR2_PIN10_SYNDETB_RTSB = 0x80 // not supported
};
enum
{
WR3_RX_ENABLE = 0x01,
WR3_SYNC_CHAR_LOAD_INHIBIT= 0x02, // not supported
WR3_ADDRESS_SEARCH_MODE = 0x04, // not supported
WR3_RX_CRC_ENABLE = 0x08, // not supported
WR3_ENTER_HUNT_PHASE = 0x10, // not supported
WR3_AUTO_ENABLES = 0x20,
WR3_RX_WORD_LENGTH_MASK = 0xc0,
WR3_RX_WORD_LENGTH_5 = 0x00,
WR3_RX_WORD_LENGTH_7 = 0x40,
WR3_RX_WORD_LENGTH_6 = 0x80,
WR3_RX_WORD_LENGTH_8 = 0xc0
};
enum
{
WR4_PARITY_ENABLE = 0x01,
WR4_PARITY_EVEN = 0x02,
WR4_STOP_BITS_MASK = 0x0c,
WR4_STOP_BITS_1 = 0x04,
WR4_STOP_BITS_1_5 = 0x08, // not supported
WR4_STOP_BITS_2 = 0x0c,
WR4_SYNC_MODE_MASK = 0x30, // not supported
WR4_SYNC_MODE_8_BIT = 0x00, // not supported
WR4_SYNC_MODE_16_BIT = 0x10, // not supported
WR4_SYNC_MODE_SDLC = 0x20, // not supported
WR4_SYNC_MODE_EXT = 0x30, // not supported
WR4_CLOCK_RATE_MASK = 0xc0,
WR4_CLOCK_RATE_X1 = 0x00,
WR4_CLOCK_RATE_X16 = 0x40,
WR4_CLOCK_RATE_X32 = 0x80,
WR4_CLOCK_RATE_X64 = 0xc0
};
enum
{
WR5_TX_CRC_ENABLE = 0x01, // not supported
WR5_RTS = 0x02,
WR5_CRC16 = 0x04, // not supported
WR5_TX_ENABLE = 0x08,
WR5_SEND_BREAK = 0x10,
WR5_TX_WORD_LENGTH_MASK = 0x60,
WR5_TX_WORD_LENGTH_5 = 0x00,
WR5_TX_WORD_LENGTH_6 = 0x40,
WR5_TX_WORD_LENGTH_7 = 0x20,
WR5_TX_WORD_LENGTH_8 = 0x60,
WR5_DTR = 0x80
};
void update_serial();
void set_dtr(int state);
void set_rts(int state);
int get_clock_mode();
stop_bits_t get_stop_bits();
int get_rx_word_length();
int get_tx_word_length();
// receiver state
UINT8 m_rx_data_fifo[3]; // receive data FIFO
UINT8 m_rx_error_fifo[3]; // receive error FIFO
UINT8 m_rx_error; // current receive error
int m_rx_fifo; // receive FIFO pointer
int m_rx_clock; // receive clock pulse count
int m_rx_first; // first character received
int m_rx_break; // receive break condition
UINT8 m_rx_rr0_latch; // read register 0 latched
int m_rxd;
int m_ri; // ring indicator latch
int m_cts; // clear to send latch
int m_dcd; // data carrier detect latch
// transmitter state
UINT8 m_tx_data; // transmit data register
int m_tx_clock; // transmit clock pulse count
int m_dtr; // data terminal ready
int m_rts; // request to send
// synchronous state
UINT16 m_sync; // sync character
int m_index;
z80dart_device *m_uart;
};
// ======================> z80dart_device
class z80dart_device : public device_t,
public device_z80daisy_interface
{
friend class z80dart_channel;
public:
// construction/destruction
z80dart_device(const machine_config &mconfig, device_type type, std::string name, std::string tag, device_t *owner, UINT32 clock, UINT32 variant, std::string shortname, std::string source);
z80dart_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock);
template<class _Object> static devcb_base &set_out_txda_callback(device_t &device, _Object object) { return downcast<z80dart_device &>(device).m_out_txda_cb.set_callback(object); }
template<class _Object> static devcb_base &set_out_dtra_callback(device_t &device, _Object object) { return downcast<z80dart_device &>(device).m_out_dtra_cb.set_callback(object); }
template<class _Object> static devcb_base &set_out_rtsa_callback(device_t &device, _Object object) { return downcast<z80dart_device &>(device).m_out_rtsa_cb.set_callback(object); }
template<class _Object> static devcb_base &set_out_wrdya_callback(device_t &device, _Object object) { return downcast<z80dart_device &>(device).m_out_wrdya_cb.set_callback(object); }
template<class _Object> static devcb_base &set_out_synca_callback(device_t &device, _Object object) { return downcast<z80dart_device &>(device).m_out_synca_cb.set_callback(object); }
template<class _Object> static devcb_base &set_out_txdb_callback(device_t &device, _Object object) { return downcast<z80dart_device &>(device).m_out_txdb_cb.set_callback(object); }
template<class _Object> static devcb_base &set_out_dtrb_callback(device_t &device, _Object object) { return downcast<z80dart_device &>(device).m_out_dtrb_cb.set_callback(object); }
template<class _Object> static devcb_base &set_out_rtsb_callback(device_t &device, _Object object) { return downcast<z80dart_device &>(device).m_out_rtsb_cb.set_callback(object); }
template<class _Object> static devcb_base &set_out_wrdyb_callback(device_t &device, _Object object) { return downcast<z80dart_device &>(device).m_out_wrdyb_cb.set_callback(object); }
template<class _Object> static devcb_base &set_out_syncb_callback(device_t &device, _Object object) { return downcast<z80dart_device &>(device).m_out_syncb_cb.set_callback(object); }
template<class _Object> static devcb_base &set_out_int_callback(device_t &device, _Object object) { return downcast<z80dart_device &>(device).m_out_int_cb.set_callback(object); }
template<class _Object> static devcb_base &set_out_rxdrqa_callback(device_t &device, _Object object) { return downcast<z80dart_device &>(device).m_out_rxdrqa_cb.set_callback(object); }
template<class _Object> static devcb_base &set_out_txdrqa_callback(device_t &device, _Object object) { return downcast<z80dart_device &>(device).m_out_txdrqa_cb.set_callback(object); }
template<class _Object> static devcb_base &set_out_rxdrqb_callback(device_t &device, _Object object) { return downcast<z80dart_device &>(device).m_out_rxdrqb_cb.set_callback(object); }
template<class _Object> static devcb_base &set_out_txdrqb_callback(device_t &device, _Object object) { return downcast<z80dart_device &>(device).m_out_txdrqb_cb.set_callback(object); }
static void configure_channels(device_t &device, int rxa, int txa, int rxb, int txb)
{
z80dart_device &dev = downcast<z80dart_device &>(device);
dev.m_rxca = rxa;
dev.m_txca = txa;
dev.m_rxcb = rxb;
dev.m_txcb = txb;
}
DECLARE_READ8_MEMBER( cd_ba_r );
DECLARE_WRITE8_MEMBER( cd_ba_w );
DECLARE_READ8_MEMBER( ba_cd_r );
DECLARE_WRITE8_MEMBER( ba_cd_w );
DECLARE_READ8_MEMBER( da_r ) { return m_chanA->data_read(); }
DECLARE_WRITE8_MEMBER( da_w ) { m_chanA->data_write(data); }
DECLARE_READ8_MEMBER( db_r ) { return m_chanB->data_read(); }
DECLARE_WRITE8_MEMBER( db_w ) { m_chanB->data_write(data); }
DECLARE_READ8_MEMBER( ca_r ) { return m_chanA->control_read(); }
DECLARE_WRITE8_MEMBER( ca_w ) { m_chanA->control_write(data); }
DECLARE_READ8_MEMBER( cb_r ) { return m_chanB->control_read(); }
DECLARE_WRITE8_MEMBER( cb_w ) { m_chanB->control_write(data); }
// interrupt acknowledge
int m1_r();
DECLARE_WRITE_LINE_MEMBER( rxa_w ) { m_chanA->write_rx(state); }
DECLARE_WRITE_LINE_MEMBER( rxb_w ) { m_chanB->write_rx(state); }
DECLARE_WRITE_LINE_MEMBER( ctsa_w ) { m_chanA->cts_w(state); }
DECLARE_WRITE_LINE_MEMBER( ctsb_w ) { m_chanB->cts_w(state); }
DECLARE_WRITE_LINE_MEMBER( dcda_w ) { m_chanA->dcd_w(state); }
DECLARE_WRITE_LINE_MEMBER( dcdb_w ) { m_chanB->dcd_w(state); }
DECLARE_WRITE_LINE_MEMBER( ria_w ) { m_chanA->ri_w(state); }
DECLARE_WRITE_LINE_MEMBER( rib_w ) { m_chanB->ri_w(state); }
DECLARE_WRITE_LINE_MEMBER( rxca_w ) { m_chanA->rxc_w(state); }
DECLARE_WRITE_LINE_MEMBER( rxcb_w ) { m_chanB->rxc_w(state); }
DECLARE_WRITE_LINE_MEMBER( txca_w ) { m_chanA->txc_w(state); }
DECLARE_WRITE_LINE_MEMBER( txcb_w ) { m_chanB->txc_w(state); }
DECLARE_WRITE_LINE_MEMBER( rxtxcb_w ) { m_chanB->rxc_w(state); m_chanB->txc_w(state); }
DECLARE_WRITE_LINE_MEMBER( synca_w ) { m_chanA->sync_w(state); }
DECLARE_WRITE_LINE_MEMBER( syncb_w ) { m_chanB->sync_w(state); }
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
virtual machine_config_constructor device_mconfig_additions() const override;
// device_z80daisy_interface overrides
virtual int z80daisy_irq_state() override;
virtual int z80daisy_irq_ack() override;
virtual void z80daisy_irq_reti() override;
// internal interrupt management
void check_interrupts();
void reset_interrupts();
void trigger_interrupt(int index, int state);
int get_channel_index(z80dart_channel *ch) { return (ch == m_chanA) ? 0 : 1; }
enum
{
TYPE_DART,
TYPE_SIO0,
TYPE_SIO1,
TYPE_SIO2,
TYPE_SIO3,
TYPE_SIO4,
TYPE_I8274,
TYPE_UPD7201
};
enum
{
CHANNEL_A = 0,
CHANNEL_B
};
required_device<z80dart_channel> m_chanA;
required_device<z80dart_channel> m_chanB;
// internal state
int m_rxca;
int m_txca;
int m_rxcb;
int m_txcb;
devcb_write_line m_out_txda_cb;
devcb_write_line m_out_dtra_cb;
devcb_write_line m_out_rtsa_cb;
devcb_write_line m_out_wrdya_cb;
devcb_write_line m_out_synca_cb;
devcb_write_line m_out_txdb_cb;
devcb_write_line m_out_dtrb_cb;
devcb_write_line m_out_rtsb_cb;
devcb_write_line m_out_wrdyb_cb;
devcb_write_line m_out_syncb_cb;
devcb_write_line m_out_int_cb;
devcb_write_line m_out_rxdrqa_cb;
devcb_write_line m_out_txdrqa_cb;
devcb_write_line m_out_rxdrqb_cb;
devcb_write_line m_out_txdrqb_cb;
int m_int_state[8]; // interrupt state
int m_variant;
};
// ======================> z80sio0_device
class z80sio0_device : public z80dart_device
{
public:
// construction/destruction
z80sio0_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock);
};
// ======================> z80sio1_device
class z80sio1_device : public z80dart_device
{
public:
// construction/destruction
z80sio1_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock);
};
// ======================> z80sio2_device
class z80sio2_device : public z80dart_device
{
public:
// construction/destruction
z80sio2_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock);
};
// ======================> z80sio3_device
class z80sio3_device : public z80dart_device
{
public:
// construction/destruction
z80sio3_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock);
};
// ======================> z80sio4_device
class z80sio4_device : public z80dart_device
{
public:
// construction/destruction
z80sio4_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock);
};
// ======================> i8274_device
class i8274_device : public z80dart_device
{
public:
// construction/destruction
i8274_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock);
DECLARE_READ8_MEMBER( inta_r ) { return m1_r(); };
};
// ======================> upd7201_device
class upd7201_device : public z80dart_device
{
public:
// construction/destruction
upd7201_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock);
};
// device type definition
extern const device_type Z80DART_CHANNEL;
extern const device_type Z80DART;
extern const device_type Z80SIO0;
extern const device_type Z80SIO1;
extern const device_type Z80SIO2;
extern const device_type Z80SIO3;
extern const device_type Z80SIO4;
extern const device_type I8274;
extern const device_type UPD7201;
#endif