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// license:BSD-3-Clause
// copyright-holders:Ryan Holtz
/*****************************************************************************
(DM)9334 8-Bit Addressable Latch
******************************************************************************
Connection Diagram:
___ ___
A0 1 |* u | 16 Vcc
A1 2 | | 15 /C
A2 3 | | 14 /E
Q0 4 | | 13 D
Q1 5 | | 12 Q7
Q2 6 | | 11 Q6
Q3 7 | | 10 Q5
GND 8 |_______| 9 Q4
***********************************************************************
Function Tables:
/E /C Mode
L H Addressable Latch
H H Memory
L L Active High Eight
Channel Demultiplexer
H L Clear
___________________________________________________________________________________________
| Inputs | Present Output States | |
|---------------------------|-------------------------------------------------| Mode |
| /C /E | D | A0 A1 A2 | Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 | |
|---------|---|-------------|-------------------------------------------------|-------------|
| L H | X | X X X | L L L L L L L L | Clear |
|---------|---|-------------|-------------------------------------------------|-------------|
| L L | L | L L L | L L L L L L L L | |
| L L | H | L L L | H L L L L L L L | |
| L L | L | H L L | L L L L L L L L | |
| L L | H | H L L | L H L L L L L L | |
| * * | * | * | * | Demultiplex |
| * * | * | * | * | |
| * * | * | * | * | |
| * * | * | * | * | |
| L L | H | H H H | L L L L L L L H | |
|---------|---|-------------|-------------------------------------------------|-------------|
| H H | X | X X X | Qn-1 | Memory |
|---------|---|-------------|-------------------------------------------------|-------------|
| H L | L | L L L | L Qn-1 Qn-1 Qn-1 | |
| H L | H | L L L | H Qn-1 Qn-1 | |
| H L | L | H L L | Qn-1 L Qn-1 | |
| H L | H | H L L | Qn-1 H Qn-1 | |
| * * | * | * | * | |
| * * | * | * | * | |
| * * | * | * | * | |
| H L | L | H H H | Qn-1 Qn-1 L | |
| H L | H | H H H | Qn-1 Qn-1 H | |
|---------|---|-------------|-------------------------------------------------|-------------|
X = Don't Care Condition
L = Low Voltage Level
H = High Voltage Level
Qn-1 = Previous Output State
**********************************************************************/
#pragma once
#ifndef DM9334_H
#define DM9334_H
#include "emu.h"
#define MCFG_DM9334_OUTPUT_CB(_devcb) \
devcb = &dm9334_device::set_out_cb(*device, DEVCB_##_devcb);
#define MCFG_DM9334_Q0_CB(_devcb) \
devcb = &dm9334_device::set_q0_cb(*device, DEVCB_##_devcb);
#define MCFG_DM9334_Q1_CB(_devcb) \
devcb = &dm9334_device::set_q1_cb(*device, DEVCB_##_devcb);
#define MCFG_DM9334_Q2_CB(_devcb) \
devcb = &dm9334_device::set_q2_cb(*device, DEVCB_##_devcb);
#define MCFG_DM9334_Q3_CB(_devcb) \
devcb = &dm9334_device::set_q3_cb(*device, DEVCB_##_devcb);
#define MCFG_DM9334_Q4_CB(_devcb) \
devcb = &dm9334_device::set_q4_cb(*device, DEVCB_##_devcb);
#define MCFG_DM9334_Q5_CB(_devcb) \
devcb = &dm9334_device::set_q5_cb(*device, DEVCB_##_devcb);
#define MCFG_DM9334_Q6_CB(_devcb) \
devcb = &dm9334_device::set_q6_cb(*device, DEVCB_##_devcb);
#define MCFG_DM9334_Q7_CB(_devcb) \
devcb = &dm9334_device::set_q7_cb(*device, DEVCB_##_devcb);
#define MCFG_DM9334_ADD(_tag) \
MCFG_DEVICE_ADD(_tag, DM9334, 0)
class dm9334_device : public device_t
{
public:
// construction/destruction
dm9334_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
// static configuration helpers
template<class _Object> static devcb_base &set_out_cb(device_t &device, _Object object) { return downcast<dm9334_device &>(device).m_out_func.set_callback(object); }
template<class _Object> static devcb_base &set_q0_cb(device_t &device, _Object object) { return downcast<dm9334_device &>(device).m_q0_func.set_callback(object); }
template<class _Object> static devcb_base &set_q1_cb(device_t &device, _Object object) { return downcast<dm9334_device &>(device).m_q1_func.set_callback(object); }
template<class _Object> static devcb_base &set_q2_cb(device_t &device, _Object object) { return downcast<dm9334_device &>(device).m_q2_func.set_callback(object); }
template<class _Object> static devcb_base &set_q3_cb(device_t &device, _Object object) { return downcast<dm9334_device &>(device).m_q3_func.set_callback(object); }
template<class _Object> static devcb_base &set_q4_cb(device_t &device, _Object object) { return downcast<dm9334_device &>(device).m_q4_func.set_callback(object); }
template<class _Object> static devcb_base &set_q5_cb(device_t &device, _Object object) { return downcast<dm9334_device &>(device).m_q5_func.set_callback(object); }
template<class _Object> static devcb_base &set_q6_cb(device_t &device, _Object object) { return downcast<dm9334_device &>(device).m_q6_func.set_callback(object); }
template<class _Object> static devcb_base &set_q7_cb(device_t &device, _Object object) { return downcast<dm9334_device &>(device).m_q7_func.set_callback(object); }
DECLARE_WRITE_LINE_MEMBER( e_w );
DECLARE_WRITE_LINE_MEMBER( c_w );
DECLARE_WRITE_LINE_MEMBER( d_w );
DECLARE_WRITE_LINE_MEMBER( a0_w );
DECLARE_WRITE_LINE_MEMBER( a1_w );
DECLARE_WRITE_LINE_MEMBER( a2_w );
DECLARE_WRITE8_MEMBER( a_w );
DECLARE_READ8_MEMBER( output_r );
DECLARE_READ_LINE_MEMBER( q0_r );
DECLARE_READ_LINE_MEMBER( q1_r );
DECLARE_READ_LINE_MEMBER( q2_r );
DECLARE_READ_LINE_MEMBER( q3_r );
DECLARE_READ_LINE_MEMBER( q4_r );
DECLARE_READ_LINE_MEMBER( q5_r );
DECLARE_READ_LINE_MEMBER( q6_r );
DECLARE_READ_LINE_MEMBER( q7_r );
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
private:
void init();
void tick();
// callbacks
devcb_write_line m_out_func;
devcb_write_line m_q0_func;
devcb_write_line m_q1_func;
devcb_write_line m_q2_func;
devcb_write_line m_q3_func;
devcb_write_line m_q4_func;
devcb_write_line m_q5_func;
devcb_write_line m_q6_func;
devcb_write_line m_q7_func;
// inputs
uint8_t m_e;
uint8_t m_c;
uint8_t m_d;
uint8_t m_a; // pins 1-3 from LSB to MSB
// outputs
uint8_t m_out; // pins 4-7 and 9-12 from LSB to MSB
// old state
uint8_t m_last_out;
};
// device type definition
extern const device_type DM9334;
#endif /* DM9334_H */
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