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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_DEVICES_MACHINE_74153_H
#define MAME_DEVICES_MACHINE_74153_H
#pragma once
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_TTL153_ADD(_tag) \
MCFG_DEVICE_ADD(_tag, TTL153, 0)
#define MCFG_TTL153_ZA_CB(_devcb) \
devcb = &ttl153_device::set_za_callback(*device, DEVCB_##_devcb);
#define MCFG_TTL153_ZB_CB(_devcb) \
devcb = &ttl153_device::set_zb_callback(*device, DEVCB_##_devcb);
//**************************************************************************
// 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);
// configuration
template <class Object> static devcb_base &set_za_callback(device_t &device, Object &&cb)
{ return downcast<ttl153_device &>(device).m_za_cb.set_callback(std::forward<Object>(cb)); }
template <class Object> static devcb_base &set_zb_callback(device_t &device, Object &&cb)
{ return downcast<ttl153_device &>(device).m_zb_cb.set_callback(std::forward<Object>(cb)); }
// select
DECLARE_WRITE_LINE_MEMBER(s0_w);
DECLARE_WRITE_LINE_MEMBER(s1_w);
// input a
DECLARE_WRITE_LINE_MEMBER(i0a_w);
DECLARE_WRITE_LINE_MEMBER(i1a_w);
DECLARE_WRITE_LINE_MEMBER(i2a_w);
DECLARE_WRITE_LINE_MEMBER(i3a_w);
// input b
DECLARE_WRITE_LINE_MEMBER(i0b_w);
DECLARE_WRITE_LINE_MEMBER(i1b_w);
DECLARE_WRITE_LINE_MEMBER(i2b_w);
DECLARE_WRITE_LINE_MEMBER(i3b_w);
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
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_DEVICES_MACHINE_74153_H
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