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// license:BSD-3-Clause
// copyright-holders:Olivier Galibert
/***************************************************************************
m6510.h
6502 with 6 i/o pins, also known as 8500
***************************************************************************/
#ifndef MAME_CPU_M6502_M6510_H
#define MAME_CPU_M6502_M6510_H
#pragma once
#include "m6502.h"
class m6510_device : public m6502_device {
public:
m6510_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
uint8_t get_port();
void set_pulls(uint8_t pullup, uint8_t pulldown);
auto read_callback() { return read_port.bind(); }
auto write_callback() { return write_port.bind(); }
virtual std::unique_ptr<util::disasm_interface> create_disassembler() override;
virtual void do_exec_full() override;
virtual void do_exec_partial() override;
protected:
m6510_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
class mi_6510 : public memory_interface {
public:
m6510_device *base;
mi_6510(m6510_device *base);
virtual ~mi_6510() {}
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;
};
devcb_read8 read_port;
devcb_write8 write_port;
uint8_t pullup, floating, dir, port, drive;
virtual void device_start() override;
virtual void device_reset() override;
uint8_t dir_r();
void dir_w(uint8_t data);
uint8_t port_r();
void port_w(uint8_t data);
void init_port();
void update_port();
#define O(o) void o ## _full(); void o ## _partial()
// 6510 undocumented instructions in a C64 context
// implementation follows what the test suites expect (usually an extra and)
O(anc_10_imm);
O(ane_10_imm);
O(arr_10_imm);
O(asr_10_imm);
O(las_10_aby);
O(lxa_10_imm);
#undef O
};
class m6508_device : public m6510_device {
public:
m6508_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
protected:
virtual void device_start() override;
class mi_6508 : public memory_interface {
public:
m6508_device *base;
mi_6508(m6508_device *base);
virtual ~mi_6508() {}
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;
};
std::unique_ptr<uint8_t[]> ram_page;
};
enum {
M6510_IRQ_LINE = m6502_device::IRQ_LINE,
M6510_NMI_LINE = m6502_device::NMI_LINE
};
DECLARE_DEVICE_TYPE(M6510, m6510_device)
DECLARE_DEVICE_TYPE(M6508, m6508_device)
#endif // MAME_CPU_M6502_M6510_H
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