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// license: BSD-3-Clause
// copyright-holders: Dirk Best
/***************************************************************************
ADC0844
A/D Converter With Multiplexer Options
___ ___
/RD 1 |* u | 20 VCC
/CS 2 | | 19 /WR
CH1 3 | | 18 /INTR
CH2 4 | | 17 DB0/MA0
CH3 5 | | 16 DB1/MA1
CH4 6 | | 15 DB2/MA2
AGND 7 | | 14 DB3/MA3
VREF 8 | | 13 DB4
DB7 9 | | 12 DB5
DGND 10 |_______| 11 DB6
***************************************************************************/
#ifndef MAME_DEVICES_MACHINE_ADC0844_H
#define MAME_DEVICES_MACHINE_ADC0844_H
#pragma once
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
class adc0844_device : public device_t
{
public:
// construction/destruction
adc0844_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
// configuration
auto intr_callback() { return m_intr_cb.bind(); }
auto ch1_callback() { return m_ch1_cb.bind(); }
auto ch2_callback() { return m_ch2_cb.bind(); }
auto ch3_callback() { return m_ch3_cb.bind(); }
auto ch4_callback() { return m_ch4_cb.bind(); }
DECLARE_READ8_MEMBER(read);
virtual DECLARE_WRITE8_MEMBER(write);
protected:
adc0844_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
// device-level overrides
virtual void device_start() override;
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
uint8_t clamp(int value);
// callbacks
devcb_write_line m_intr_cb;
devcb_read8 m_ch1_cb, m_ch2_cb, m_ch3_cb, m_ch4_cb;
emu_timer *m_conversion_timer;
// state
int m_channel;
uint8_t m_result;
};
class adc0848_device : public adc0844_device
{
public:
// construction/destruction
adc0848_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
// configuration
auto ch5_callback() { return m_ch5_cb.bind(); }
auto ch6_callback() { return m_ch6_cb.bind(); }
auto ch7_callback() { return m_ch7_cb.bind(); }
auto ch8_callback() { return m_ch8_cb.bind(); }
virtual DECLARE_WRITE8_MEMBER(write) override;
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
private:
devcb_read8 m_ch5_cb, m_ch6_cb, m_ch7_cb, m_ch8_cb;
};
// device type definition
DECLARE_DEVICE_TYPE(ADC0844, adc0844_device)
DECLARE_DEVICE_TYPE(ADC0848, adc0848_device)
#endif // MAME_DEVICES_MACHINE_ADC0844_H
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