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// license:BSD-3-Clause
// copyright-holders:Dirk Best, hap
/*******************************************************************************
Saitek OSA Expansion Slot
15-pin slot "PIO"
STB-P <
D0 <>
D1 <>
D2 <>
D3 <>
D4 <>
D5 <>
D6 <>
D7 <>
ACK-P >
RTS-P <
PW >
GND >
NMI-P >
V+ >
*******************************************************************************/
#ifndef MAME_BUS_SAITEK_OSA_EXPANSION_H
#define MAME_BUS_SAITEK_OSA_EXPANSION_H
#pragma once
#include "screen.h"
DECLARE_DEVICE_TYPE(SAITEKOSA_EXPANSION, saitekosa_expansion_device)
//******************************************************************************
// TYPE DEFINITIONS
//******************************************************************************
class device_saitekosa_expansion_interface;
// ======================> saitekosa_expansion_device
class saitekosa_expansion_device : public device_t, public device_single_card_slot_interface<device_saitekosa_expansion_interface>
{
public:
// construction/destruction
template <typename T>
saitekosa_expansion_device(machine_config const &mconfig, char const *tag, device_t *owner, T &&opts) :
saitekosa_expansion_device(mconfig, tag, owner, u32(0))
{
option_reset();
opts(*this);
set_default_option(nullptr);
set_fixed(false);
}
saitekosa_expansion_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
virtual ~saitekosa_expansion_device();
// callbacks
auto stb_handler() { return m_stb_handler.bind(); }
auto rts_handler() { return m_rts_handler.bind(); }
// called from module device
void stb_w(int state) { m_stb_handler(state); }
void rts_w(int state) { m_rts_handler(state); }
u8 data_state() { return m_data; }
int nmi_state() { return m_nmi; }
int ack_state() { return m_ack; }
int pw_state() { return m_pw; }
// called from host
u8 data_r();
void data_w(u8 data);
void nmi_w(int state);
void ack_w(int state);
void pw_w(int state);
protected:
// device-level overrides
virtual void device_start() override ATTR_COLD;
virtual void device_add_mconfig(machine_config &config) override ATTR_COLD;
private:
devcb_write_line m_stb_handler;
devcb_write_line m_rts_handler;
// input pins state
u8 m_data = 0;
int m_nmi = 0;
int m_ack = 0;
int m_pw = 0;
device_saitekosa_expansion_interface *m_module;
u32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
};
// ======================> device_saitekosa_expansion_interface
class device_saitekosa_expansion_interface : public device_interface
{
public:
// construction/destruction
virtual ~device_saitekosa_expansion_interface();
virtual u8 data_r() { return 0xff; }
virtual void data_w(u8 data) { }
virtual void nmi_w(int state) { }
virtual void ack_w(int state) { }
virtual void pw_w(int state) { }
virtual u32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) { return 0; }
protected:
device_saitekosa_expansion_interface(const machine_config &mconfig, device_t &device);
saitekosa_expansion_device *m_expansion;
};
void saitekosa_expansion_modules(device_slot_interface &device);
#endif // MAME_BUS_SAITEK_OSA_EXPANSION_H
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