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// license:BSD-3-Clause
// copyright-holders:Nigel Barnes
/******************************************************************************
Psion ASIC4
******************************************************************************/
#ifndef MAME_MACHINE_PSION_ASIC4_H
#define MAME_MACHINE_PSION_ASIC4_H
#pragma once
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> psion_asic4_device
class psion_asic4_device : public device_t, public device_memory_interface
{
public:
psion_asic4_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
void set_ext_info_byte(uint16_t info) { m_info_byte = info; }
void data_w(uint16_t data);
uint8_t data_r();
protected:
// device_t overrides
virtual void device_start() override ATTR_COLD;
virtual void device_reset() override ATTR_COLD;
// device_memory_interface overrides
virtual space_config_vector memory_space_config() const override;
private:
address_space_config m_space_config;
address_space *m_space;
static constexpr uint16_t NULL_FRAME = 0x000;
static constexpr uint16_t CONTROL_FRAME = 0x100;
static constexpr uint16_t DATA_FRAME = 0x200;
uint32_t m_addr_latch;
uint8_t m_addr_writes;
uint16_t m_info_byte;
uint8_t m_sibo_control;
};
// device type definition
DECLARE_DEVICE_TYPE(PSION_ASIC4, psion_asic4_device)
#endif // MAME_MACHINE_PSION_ASIC4_H
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