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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);
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);
typedef device_delegate<uint8_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
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_farbank;
uint32_t XPC;
uint8_t farbank_r() { return m_farbank; }
void farbank_w(uint8_t data) { m_farbank = data; }
uint32_t adr_with_bank(uint16_t adr) { return adr | (m_farbank << 16); }
virtual void device_start() override;
virtual void device_reset() override;
virtual offs_t pc_to_external(u16 pc) override;
private:
xavix_interrupt_vector_delegate m_vector_callback;
};
DECLARE_DEVICE_TYPE(XAVIX, xavix_device)
#endif // MAME_CPU_M6502_XAVIX_H
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