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// license:BSD-3-Clause
// copyright-holders:hap
/*
Texas Instruments TMS1024/TMS1025 I/O expander
*/
#ifndef _TMS1024_H_
#define _TMS1024_H_
#include "emu.h"
// ports setup
// 4-bit ports (3210 = DCBA)
// valid ports: 4-7 for TMS1024, 1-7 for TMS1025
#define MCFG_TMS1024_WRITE_PORT_CB(X, _devcb) \
tms1024_device::set_write_port##X##_callback(*device, DEVCB_##_devcb);
enum
{
TMS1024_PORT1 = 0,
TMS1024_PORT2,
TMS1024_PORT3,
TMS1024_PORT4,
TMS1024_PORT5,
TMS1024_PORT6,
TMS1024_PORT7
};
// pinout reference
/*
____ ____ ____ ____
Vss 1 |* \_/ | 28 H2 Vss 1 |* \_/ | 40 H2
H3 2 | | 27 H1 H3 2 | | 39 H1
H4 3 | | 26 Vdd H4 3 | | 38 Vdd
CE 4 | | 25 S2 CE 4 | | 37 S2
MS 5 | | 24 S1 MS 5 | | 36 S1
STD 6 | | 23 S0 STD 6 | | 35 S0
A4 7 | TMS1024 | 22 D7 A1 7 | | 34 D3
B4 8 | | 21 C7 B1 8 | | 33 C3
C4 9 | | 20 B7 C1 9 | | 32 B3
D4 10 | | 19 A7 D1 10 | TMS1025 | 31 A3
A5 11 | | 18 D6 A4 11 | | 30 D7
B5 12 | | 17 C6 B4 12 | | 29 C7
C5 13 | | 16 B6 C4 13 | | 28 B7
D5 14 |___________| 15 A6 D4 14 | | 27 A7
A5 15 | | 26 D6
B5 16 | | 25 C6
CE: Chip Enable C5 17 | | 24 B6
MS: Master S.? D5 18 | | 23 A6
STD: STrobe Data? A2 19 | | 22 D2
S: Select B2 20 |___________| 21 C2
H: Hold?
*/
class tms1024_device : public device_t
{
public:
tms1024_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
tms1024_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source);
// static configuration helpers
template<class _Object> static devcb_base &set_write_port1_callback(device_t &device, _Object object) { return downcast<tms1024_device &>(device).m_write_port1.set_callback(object); }
template<class _Object> static devcb_base &set_write_port2_callback(device_t &device, _Object object) { return downcast<tms1024_device &>(device).m_write_port2.set_callback(object); }
template<class _Object> static devcb_base &set_write_port3_callback(device_t &device, _Object object) { return downcast<tms1024_device &>(device).m_write_port3.set_callback(object); }
template<class _Object> static devcb_base &set_write_port4_callback(device_t &device, _Object object) { return downcast<tms1024_device &>(device).m_write_port4.set_callback(object); }
template<class _Object> static devcb_base &set_write_port5_callback(device_t &device, _Object object) { return downcast<tms1024_device &>(device).m_write_port5.set_callback(object); }
template<class _Object> static devcb_base &set_write_port6_callback(device_t &device, _Object object) { return downcast<tms1024_device &>(device).m_write_port6.set_callback(object); }
template<class _Object> static devcb_base &set_write_port7_callback(device_t &device, _Object object) { return downcast<tms1024_device &>(device).m_write_port7.set_callback(object); }
DECLARE_WRITE8_MEMBER(write_h);
DECLARE_WRITE8_MEMBER(write_s);
DECLARE_WRITE_LINE_MEMBER(write_std);
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
UINT8 m_h; // 4-bit data latch
UINT8 m_s; // 3-bit port select
UINT8 m_std; // strobe pin
// callbacks
devcb_write8 m_write_port1, m_write_port2, m_write_port3, m_write_port4, m_write_port5, m_write_port6, m_write_port7;
devcb_write8 *m_write_port[7];
};
class tms1025_device : public tms1024_device
{
public:
tms1025_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
};
extern const device_type TMS1024;
extern const device_type TMS1025;
#endif /* _TMS1024_H_ */
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