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// license: BSD-3-Clause
// copyright-holders: Dirk Best
/***************************************************************************
SN54/74153
Dual 4-Input Multiplexer
___ ___
EA/1G 1 |* u | 16 VCC
S1/B 2 | | 15 EB/2G
I3A/1C3 3 | | 14 S0/A
I2A/1C2 4 | | 13 I3B/2C3
I1A/1C1 5 | | 12 I2B/2C2
I0A/1C0 6 | | 11 I1B/2C1
ZA/1Y 7 | | 10 I0B/2C0
GND 8 |_______| 9 ZB/2Y
***************************************************************************/
#ifndef MAME_MACHINE_74153_H
#define MAME_MACHINE_74153_H
#pragma once
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
class ttl153_device : public device_t
{
public:
// construction/destruction
ttl153_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
// configuration
auto za_cb() { return m_za_cb.bind(); }
auto zb_cb() { return m_zb_cb.bind(); }
// select
void s0_w(int state);
void s1_w(int state);
void s_w(uint8_t data);
// input a
void i0a_w(int state);
void i1a_w(int state);
void i2a_w(int state);
void i3a_w(int state);
void ia_w(uint8_t data);
// input b
void i0b_w(int state);
void i1b_w(int state);
void i2b_w(int state);
void i3b_w(int state);
void ib_w(uint8_t data);
// output
int za_r();
int zb_r();
protected:
// device-level overrides
virtual void device_start() override ATTR_COLD;
virtual void device_reset() override ATTR_COLD;
private:
void update_a();
void update_b();
// callbacks
devcb_write_line m_za_cb;
devcb_write_line m_zb_cb;
// state
bool m_s[2];
bool m_ia[4];
bool m_ib[4];
bool m_z[2];
};
// device type definition
DECLARE_DEVICE_TYPE(TTL153, ttl153_device)
#endif // MAME_MACHINE_74153_H
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