// license:BSD-3-Clause
// copyright-holders: AJR
/**********************************************************************
OKI MSM6253 8-Bit 4-Channel A/D Converter
***********************************************************************
____ ____
/OSC OUT 1 |* \_/ | 18 OSC OUT
D-GND 2 | | 17 OSC IN
A-GND 3 | | 16 /RD
IN0 4 | | 15 /WR
IN1 5 | MSM6253RS | 14 ALE
IN2 6 | | 13 /CS
IN3 7 | | 12 A1
Vr 8 | | 11 A0
Vdd 9 |___________| 10 S.O.
**********************************************************************/
#pragma once
#ifndef DEVICES_MACHINE_MSM6253_H
#define DEVICES_MACHINE_MSM6253_H
//**************************************************************************
// CONFIGURATION MACROS
//**************************************************************************
#define MCFG_MSM6253_IN0_ANALOG_PORT(_input) \
msm6253_device::static_set_input_tag(*device, 0, "^" _input);
#define MCFG_MSM6253_IN1_ANALOG_PORT(_input) \
msm6253_device::static_set_input_tag(*device, 1, "^" _input);
#define MCFG_MSM6253_IN2_ANALOG_PORT(_input) \
msm6253_device::static_set_input_tag(*device, 2, "^" _input);
#define MCFG_MSM6253_IN3_ANALOG_PORT(_input) \
msm6253_device::static_set_input_tag(*device, 3, "^" _input);
#define MCFG_MSM6253_IN0_ANALOG_READ(_class, _method) \
msm6253_device::static_set_input_cb(*device, 0, analog_port_read_delegate(&_class::_method, #_class "::" #_method, downcast<_class *>(owner)));
#define MCFG_MSM6253_IN1_ANALOG_READ(_class, _method) \
msm6253_device::static_set_input_cb(*device, 1, analog_port_read_delegate(&_class::_method, #_class "::" #_method, downcast<_class *>(owner)));
#define MCFG_MSM6253_IN2_ANALOG_READ(_class, _method) \
msm6253_device::static_set_input_cb(*device, 2, analog_port_read_delegate(&_class::_method, #_class "::" #_method, downcast<_class *>(owner)));
#define MCFG_MSM6253_IN3_ANALOG_READ(_class, _method) \
msm6253_device::static_set_input_cb(*device, 3, analog_port_read_delegate(&_class::_method, #_class "::" #_method, downcast<_class *>(owner)));
#define MCFG_MSM6253_IN0_ANALOG_DEVREAD(_tag, _class, _method) \
msm6253_device::static_set_input_cb(*device, 0, analog_port_read_delegate(&_class::_method, #_class "::" #_method, _tag));
#define MCFG_MSM6253_IN1_ANALOG_DEVREAD(_tag, _class, _method) \
msm6253_device::static_set_input_cb(*device, 1, analog_port_read_delegate(&_class::_method, #_class "::" #_method, _tag));
#define MCFG_MSM6253_IN2_ANALOG_DEVREAD(_tag, _class, _method) \
msm6253_device::static_set_input_cb(*device, 2, analog_port_read_delegate(&_class::_method, #_class "::" #_method, _tag));
#define MCFG_MSM6253_IN3_ANALOG_DEVREAD(_tag, _class, _method) \
msm6253_device::static_set_input_cb(*device, 3, analog_port_read_delegate(&_class::_method, #_class "::" #_method, _tag));
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
typedef device_delegate<ioport_value ()> analog_port_read_delegate;
// ======================> msm6253_device
class msm6253_device : public device_t
{
public:
// construction/destruction
msm6253_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
// static configuration
static void static_set_input_tag(device_t &device, int port, const char *tag) { downcast<msm6253_device &>(device).m_analog_ports[port].set_tag(tag); }
static void static_set_input_cb(device_t &device, int port, analog_port_read_delegate &&cb) { downcast<msm6253_device &>(device).m_analog_input_cb[port] = std::move(cb); }
// write handlers
WRITE8_MEMBER(address_w);
WRITE8_MEMBER(select_w);
// read handlers
bool shift_out();
READ8_MEMBER(d0_r);
READ8_MEMBER(d7_r);
protected:
// device-level overrides
virtual void device_start() override;
private:
// helpers
template<int port> ioport_value port_read();
// input configuration
optional_ioport_array<4> m_analog_ports;
analog_port_read_delegate m_analog_input_cb[4];
// private data
u8 m_shift_register;
};
// device type definition
extern const device_type MSM6253;
#endif // DEVICES_MACHINE_MSM6253_H