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// license:BSD-3-Clause
// copyright-holders:smf
/***************************************************************************
National Semiconductor ADC0831 / ADC0832 / ADC0834 / ADC0838
8-Bit serial I/O A/D Converters with Muliplexer Options
***************************************************************************/
#ifndef __ADC083X_H__
#define __ADC083X_H__
#include "emu.h"
/***************************************************************************
TYPE DEFINITIONS
***************************************************************************/
typedef device_delegate<double (UINT8 input)> adc083x_input_delegate;
#define ADC083X_INPUT_CB(name) double name(UINT8 input)
#define MCFG_ADC083X_INPUT_CB(_class, _method) \
adc083x_device::set_input_callback(*device, adc083x_input_delegate(&_class::_method, #_class "::" #_method, downcast<_class *>(owner)));
/***************************************************************************
CONSTANTS
***************************************************************************/
#define ADC083X_CH0 0
#define ADC083X_CH1 1
#define ADC083X_CH2 2
#define ADC083X_CH3 3
#define ADC083X_CH4 4
#define ADC083X_CH5 5
#define ADC083X_CH6 6
#define ADC083X_CH7 7
#define ADC083X_COM 8
#define ADC083X_AGND 9
#define ADC083X_VREF 10
/***************************************************************************
MACROS / CONSTANTS
***************************************************************************/
class adc083x_device : public device_t
{
public:
adc083x_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source);
// static configuration helpers
static void set_input_callback(device_t &device, adc083x_input_delegate input_callback) { downcast<adc083x_device &>(device).m_input_callback = input_callback; }
DECLARE_WRITE_LINE_MEMBER( cs_write );
DECLARE_WRITE_LINE_MEMBER( clk_write );
DECLARE_WRITE_LINE_MEMBER( di_write );
DECLARE_WRITE_LINE_MEMBER( se_write );
DECLARE_READ_LINE_MEMBER( sars_read );
DECLARE_READ_LINE_MEMBER( do_read );
protected:
// device-level overrides
virtual void device_start();
INT32 m_mux_bits;
private:
UINT8 conversion();
void clear_sars();
// internal state
INT32 m_cs;
INT32 m_clk;
INT32 m_di;
INT32 m_se;
INT32 m_sars;
INT32 m_do;
INT32 m_sgl;
INT32 m_odd;
INT32 m_sel1;
INT32 m_sel0;
INT32 m_state;
INT32 m_bit;
INT32 m_output;
adc083x_input_delegate m_input_callback;
};
class adc0831_device : public adc083x_device
{
public:
adc0831_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
};
extern const device_type ADC0831;
class adc0832_device : public adc083x_device
{
public:
adc0832_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
};
extern const device_type ADC0832;
class adc0834_device : public adc083x_device
{
public:
adc0834_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
};
extern const device_type ADC0834;
class adc0838_device : public adc083x_device
{
public:
adc0838_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
};
extern const device_type ADC0838;
#endif /* __ADC083X_H__ */
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