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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
Intel 8355 - 16,384-Bit ROM with I/O emulation
**********************************************************************
_____ _____
_CE1 1 |* \_/ | 40 Vcc
CE2 2 | | 39 PB7
CLK 3 | | 38 PB6
RESET 4 | | 37 PB5
N.C. 5 | | 36 PB4
READY 6 | | 35 PB3
IO/_M 7 | | 34 PB2
_IOR 8 | | 33 PB1
_RD 9 | | 32 PB0
_IOW 10 | 8355 | 31 PA7
ALE 11 | 8355-2 | 30 PA6
AD0 12 | | 29 PA5
AD1 13 | | 28 PA4
AD2 14 | | 27 PA3
AD3 15 | | 26 PA2
AD4 16 | | 25 PA1
AD5 17 | | 24 PA0
AD6 18 | | 23 A10
AD7 19 | | 22 A9
Vss 20 |_____________| 21 A8
**********************************************************************/
#pragma once
#ifndef __I8355__
#define __I8355__
#include "emu.h"
///*************************************************************************
// MACROS / CONSTANTS
///*************************************************************************
///*************************************************************************
// INTERFACE CONFIGURATION MACROS
///*************************************************************************
#define MCFG_I8355_IN_PA_CB(_devcb) \
devcb = &i8355_device::set_in_pa_callback(*device, DEVCB_##_devcb);
#define MCFG_I8355_OUT_PA_CB(_devcb) \
devcb = &i8355_device::set_out_pa_callback(*device, DEVCB_##_devcb);
#define MCFG_I8355_IN_PB_CB(_devcb) \
devcb = &i8355_device::set_in_pb_callback(*device, DEVCB_##_devcb);
#define MCFG_I8355_OUT_PB_CB(_devcb) \
devcb = &i8355_device::set_out_pb_callback(*device, DEVCB_##_devcb);
///*************************************************************************
// TYPE DEFINITIONS
///*************************************************************************
// ======================> i8355_device
class i8355_device : public device_t,
public device_memory_interface
{
public:
// construction/destruction
i8355_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
template<class _Object> static devcb_base &set_in_pa_callback(device_t &device, _Object object) { return downcast<i8355_device &>(device).m_in_pa_cb.set_callback(object); }
template<class _Object> static devcb_base &set_out_pa_callback(device_t &device, _Object object) { return downcast<i8355_device &>(device).m_out_pa_cb.set_callback(object); }
template<class _Object> static devcb_base &set_in_pb_callback(device_t &device, _Object object) { return downcast<i8355_device &>(device).m_in_pb_cb.set_callback(object); }
template<class _Object> static devcb_base &set_out_pb_callback(device_t &device, _Object object) { return downcast<i8355_device &>(device).m_out_pb_cb.set_callback(object); }
DECLARE_READ8_MEMBER( io_r );
DECLARE_WRITE8_MEMBER( io_w );
DECLARE_READ8_MEMBER( memory_r );
DECLARE_WRITE8_MEMBER( memory_w );
protected:
// device-level overrides
virtual void device_start();
virtual void device_reset();
// device_memory_interface overrides
virtual const address_space_config *memory_space_config(address_spacenum spacenum = AS_0) const;
inline UINT8 read_port(int port);
inline void write_port(int port, UINT8 data);
private:
devcb_read8 m_in_pa_cb;
devcb_write8 m_out_pa_cb;
devcb_read8 m_in_pb_cb;
devcb_write8 m_out_pb_cb;
// registers
UINT8 m_output[2]; // output latches
UINT8 m_ddr[2]; // DDR latches
const address_space_config m_space_config;
};
// device type definition
extern const device_type I8355;
#endif
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