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/***************************************************************************
Motorola MC2661/MC68661 Enhanced Programmable Communications Interface
Copyright the MESS Team.
Visit http://mamedev.org for licensing and usage restrictions.
****************************************************************************
_____ _____
D2 1 |* \_/ | 28 D1
D3 2 | | 27 D0
RxD 3 | | 26 Vcc
GND 4 | | 25 _RxC/BKDET
D4 5 | | 24 _DTR
D5 6 | | 23 _RTS
D6 7 | MC2661 | 22 _DSR
D7 8 | MC68661 | 21 RESET
_TxC/XSYNC 9 | | 20 BRCLK
A1 10 | | 19 TxD
_CE 11 | | 18 _TxEMT/DSCHG
A0 12 | | 17 _CTS
_R/W 13 | | 16 _DCD
_RxRDY 14 |_____________| 15 _TxRDY
***************************************************************************/
#pragma once
#ifndef __MC2661__
#define __MC2661__
#include "emu.h"
/***************************************************************************
DEVICE CONFIGURATION MACROS
***************************************************************************/
#define MCFG_MC2661_ADD(_tag, _clock, _config) \
MCFG_DEVICE_ADD(_tag, MC2661, _clock) \
MCFG_DEVICE_CONFIG(_config)
#define MC2661_INTERFACE(_name) \
const mc2661_interface (_name) =
/***************************************************************************
TYPE DEFINITIONS
***************************************************************************/
// ======================> mc2661_interface
struct mc2661_interface
{
int m_rxc;
int m_txc;
devcb_read_line m_in_rxd_cb;
devcb_write_line m_out_txd_cb;
devcb_write_line m_out_rxrdy_cb;
devcb_write_line m_out_txrdy_cb;
devcb_write_line m_out_rts_cb;
devcb_write_line m_out_dtr_cb;
devcb_write_line m_out_txemt_dschg_cb;
devcb_write_line m_out_bkdet_cb;
devcb_write_line m_out_xsync_cb;
};
// ======================> mc2661_device
class mc2661_device : public device_t,
public device_serial_interface,
public mc2661_interface
{
public:
// construction/destruction
mc2661_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
DECLARE_READ8_MEMBER( read );
DECLARE_WRITE8_MEMBER( write );
DECLARE_WRITE_LINE_MEMBER( rxc_w );
DECLARE_WRITE_LINE_MEMBER( txc_w );
DECLARE_WRITE_LINE_MEMBER( dsr_w );
DECLARE_WRITE_LINE_MEMBER( dcd_w );
DECLARE_WRITE_LINE_MEMBER( cts_w );
DECLARE_READ_LINE_MEMBER( rxrdy_r );
DECLARE_READ_LINE_MEMBER( txemt_r );
protected:
// device-level overrides
virtual void device_config_complete();
virtual void device_start();
virtual void device_reset();
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
// device_serial_interface overrides
virtual void input_callback(UINT8 state);
private:
inline void receive();
inline void transmit();
enum
{
TIMER_RX,
TIMER_TX
};
devcb_resolved_read_line m_in_rxd_func;
devcb_resolved_write_line m_out_txd_func;
devcb_resolved_write_line m_out_rxrdy_func;
devcb_resolved_write_line m_out_txrdy_func;
devcb_resolved_write_line m_out_rts_func;
devcb_resolved_write_line m_out_dtr_func;
devcb_resolved_write_line m_out_txemt_dschg_func;
devcb_resolved_write_line m_out_bkdet_func;
devcb_resolved_write_line m_out_xsync_func;
UINT8 m_rhr;
UINT8 m_thr;
UINT8 m_cr;
UINT8 m_sr;
UINT8 m_mr[2];
UINT8 m_sync[3];
int m_mode_index;
int m_sync_index;
// timers
emu_timer *m_rx_timer;
emu_timer *m_tx_timer;
};
// device type definition
extern const device_type MC2661;
#endif
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