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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 MAME_MACHINE_ADC083X_H
#define MAME_MACHINE_ADC083X_H
#pragma once
/***************************************************************************
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:
typedef device_delegate<double (uint8_t input)> input_delegate;
// configuration helpers
template <typename... T> void set_input_callback(T &&... args) { m_input_callback.set(std::forward<T>(args)...); }
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:
adc083x_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, const XTAL &clock, uint32_t mux_bits);
// device-level overrides
virtual void device_start() override;
const int32_t m_mux_bits;
private:
uint8_t conversion();
void clear_sars();
// internal state
int32_t m_cs;
int32_t m_clk;
int32_t m_di;
int32_t m_se;
int32_t m_sars;
int32_t m_do;
int32_t m_sgl;
int32_t m_odd;
int32_t m_sel1;
int32_t m_sel0;
int32_t m_state;
int32_t m_bit;
int32_t m_output;
input_delegate m_input_callback;
};
class adc0831_device : public adc083x_device
{
public:
adc0831_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock = XTAL());
};
class adc0832_device : public adc083x_device
{
public:
adc0832_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock = XTAL());
};
class adc0834_device : public adc083x_device
{
public:
adc0834_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock = XTAL());
};
class adc0838_device : public adc083x_device
{
public:
adc0838_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock = XTAL());
};
DECLARE_DEVICE_TYPE(ADC0831, adc0831_device)
DECLARE_DEVICE_TYPE(ADC0832, adc0832_device)
DECLARE_DEVICE_TYPE(ADC0834, adc0834_device)
DECLARE_DEVICE_TYPE(ADC0838, adc0838_device)
#endif // MAME_MACHINE_ADC083X_H
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