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// license:BSD-3-Clause
// copyright-holders:David Haywood
/***************************************************************************
xavix.h
***************************************************************************/
#ifndef MAME_CPU_M6502_XAVIX_H
#define MAME_CPU_M6502_XAVIX_H
#pragma once
#include "m6502.h"
#define MCFG_XAVIX_VECTOR_CALLBACK(_class, _method) \
downcast<xavix_device &>(*device).set_vector_callback(xavix_device::xavix_interrupt_vector_delegate(&_class::_method, #_class "::" #_method, this));
class xavix_device : public m6502_device {
public:
xavix_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
xavix_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
virtual std::unique_ptr<util::disasm_interface> create_disassembler() override;
virtual void do_exec_full() override;
virtual void do_exec_partial() override;
#define O(o) void o ## _full(); void o ## _partial()
// xaviv opcodes
O(callf_xa3);
O(retf_imp);
O(brk_xav_imp);
O(rti_xav_imp);
O(xavlda_idy);
typedef device_delegate<int16_t (int which, int half)> xavix_interrupt_vector_delegate;
template <typename Object> void set_vector_callback(Object &&cb) { m_vector_callback = std::forward<Object>(cb); }
#undef O
uint8_t read_full_data(uint8_t databank, uint16_t addr);
uint8_t read_full_data(uint32_t addr);
void write_full_data(uint8_t databank, uint16_t adr, uint8_t val);
void write_full_data(uint32_t addr, uint8_t val);
// used for opcodes etc. that can't see certain things in banks > 0x80
uint8_t read_full_data_sp(uint8_t databank, uint16_t adr);
uint8_t read_full_data_sp(uint32_t adr);
void write_full_data_sp(uint8_t databank, uint16_t adr, uint8_t val);
void write_full_data_sp(uint32_t adr, uint8_t val);
protected:
class mi_xavix_normal : public memory_interface {
public:
xavix_device *base;
mi_xavix_normal(xavix_device *base);
virtual ~mi_xavix_normal() {}
virtual uint8_t read(uint16_t adr) override;
virtual uint8_t read_sync(uint16_t adr) override;
virtual uint8_t read_arg(uint16_t adr) override;
virtual void write(uint16_t adr, uint8_t val) override;
};
class mi_xavix_nd : public mi_xavix_normal {
public:
mi_xavix_nd(xavix_device *base);
virtual ~mi_xavix_nd() {}
virtual uint8_t read_sync(uint16_t adr) override;
virtual uint8_t read_arg(uint16_t adr) override;
};
uint8_t m_databank;
uint8_t m_codebank;
uint32_t XPC;
uint32_t adr_with_codebank(uint16_t adr) { return adr | (get_codebank() << 16); }
virtual void device_start() override;
virtual void device_reset() override;
virtual offs_t pc_to_external(u16 pc) override;
virtual void state_import(const device_state_entry &entry) override;
virtual void state_string_export(const device_state_entry &entry, std::string &str) const override;
// device_memory_interface overrides
virtual space_config_vector memory_space_config() const override;
address_space_config m_special_data_config;
address_space *m_special_data_space;
address_space_config m_lowbus_config;
address_space_config m_extbus_config;
address_space *m_lowbus_space;
address_space *m_extbus_space;
uint8_t read_special(uint16_t adr);
protected:
xavix_interrupt_vector_delegate m_vector_callback;
void set_codebank(uint8_t bank);
uint8_t get_codebank();
void set_databank(uint8_t bank);
uint8_t get_databank();
};
enum {
XAVIX_DATABANK = M6502_IR+1,
XAVIX_CODEBANK,
};
DECLARE_DEVICE_TYPE(XAVIX, xavix_device)
#endif // MAME_CPU_M6502_XAVIX_H
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