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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
Xerox 820/820-II ASCII keyboard emulation
*********************************************************************/
#pragma once
#ifndef __XEROX_820_KEYBOARD__
#define __XEROX_820_KEYBOARD__
#include "emu.h"
#include "cpu/mcs48/mcs48.h"
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_XEROX_820_KEYBOARD_KBSTB_CALLBACK(_devcb) \
devcb = &xerox_820_keyboard_t::set_kbstb_wr_callback(*device, DEVCB_##_devcb);
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> xerox_820_keyboard_t
class xerox_820_keyboard_t : public device_t
{
public:
// construction/destruction
xerox_820_keyboard_t(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
template<class _Object> static devcb_base &set_kbstb_wr_callback(device_t &device, _Object object) { return downcast<xerox_820_keyboard_t &>(device).m_kbstb_cb.set_callback(object); }
// optional information overrides
virtual const tiny_rom_entry *device_rom_region() const override;
virtual machine_config_constructor device_mconfig_additions() const override;
virtual ioport_constructor device_input_ports() const override;
uint8_t read() { return m_bus; }
DECLARE_READ8_MEMBER( kb_p1_r );
DECLARE_WRITE8_MEMBER( kb_p1_w );
DECLARE_READ8_MEMBER( kb_p2_r );
DECLARE_READ8_MEMBER( kb_t0_r );
DECLARE_READ8_MEMBER( kb_t1_r );
DECLARE_WRITE8_MEMBER( kb_bus_w );
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
virtual void device_reset_after_children() override;
private:
required_device<cpu_device> m_maincpu;
required_ioport_array<16> m_y;
devcb_write_line m_kbstb_cb;
uint8_t m_p1;
uint8_t m_bus;
};
// device type definition
extern const device_type XEROX_820_KEYBOARD;
#endif
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