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// license:BSD-3-Clause
// copyright-holders:Miodrag Milanovic, Robbbert
#pragma once
#ifndef __VCS80__
#define __VCS80__
#include "cpu/z80/z80.h"
#include "cpu/z80/z80daisy.h"
#include "machine/z80pio.h"
#include "machine/ram.h"
#include "machine/bankdev.h"
#define SCREEN_TAG "screen"
#define Z80_TAG "z80"
#define Z80PIO_TAG "z80pio"
class vcs80_state : public driver_device
{
public:
vcs80_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_maincpu(*this, Z80_TAG),
m_pio(*this, Z80PIO_TAG),
m_y0(*this, "Y0"),
m_y1(*this, "Y1"),
m_y2(*this, "Y2"),
m_bdmem(*this, "bdmem")
{ }
required_device<cpu_device> m_maincpu;
required_device<z80pio_device> m_pio;
required_ioport m_y0;
required_ioport m_y1;
required_ioport m_y2;
required_device<address_map_bank_device> m_bdmem;
virtual void machine_start() override;
DECLARE_READ8_MEMBER( pio_r );
DECLARE_WRITE8_MEMBER( pio_w );
DECLARE_READ8_MEMBER( pio_pa_r );
DECLARE_WRITE8_MEMBER( pio_pb_w );
DECLARE_READ8_MEMBER( mem_r )
{
m_pio->port_b_write((!BIT(offset, 0)) << 7);
return m_bdmem->read8(space, offset);
}
DECLARE_WRITE8_MEMBER( mem_w )
{
m_pio->port_b_write((!BIT(offset, 0)) << 7);
m_bdmem->write8(space, offset, data);
}
DECLARE_READ8_MEMBER( io_r )
{
m_pio->port_b_write((!BIT(offset, 0)) << 7);
if ((offset >= 4) && (offset <= 7))
{
return pio_r(space, offset-4);
}
return 0xff;
}
DECLARE_WRITE8_MEMBER( io_w )
{
m_pio->port_b_write((!BIT(offset, 0)) << 7);
if ((offset >= 4) && (offset <= 7))
{
pio_w(space, offset-4, data);
}
}
/* keyboard state */
int m_keylatch;
int m_keyclk;
DECLARE_DRIVER_INIT(vcs80);
TIMER_DEVICE_CALLBACK_MEMBER(vcs80_keyboard_tick);
};
#endif
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