#pragma once
#ifndef __VIXEN__
#define __VIXEN__
#include "machine/ram.h"
#define Z8400A_TAG "5f"
#define FDC1797_TAG "5n"
#define P8155H_TAG "2n"
#define P8155H_IO_TAG "c7"
#define P8251A_TAG "c3"
#define DISCRETE_TAG "discrete"
#define SCREEN_TAG "screen"
class vixen_state : public driver_device
{
public:
vixen_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_maincpu(*this, Z8400A_TAG),
m_fdc(*this, FDC1797_TAG),
m_io_i8155(*this, P8155H_IO_TAG),
m_usart(*this, P8251A_TAG),
m_discrete(*this, DISCRETE_TAG),
m_ieee488(*this, IEEE488_TAG),
m_ram(*this, RAM_TAG),
m_floppy0(*this, FLOPPY_0),
m_floppy1(*this, FLOPPY_1),
m_fdint(0),
m_vsync(0),
m_srq(1),
m_atn(1),
m_rxrdy(0),
m_txrdy(0)
,
m_video_ram(*this, "video_ram"){ }
required_device<cpu_device> m_maincpu;
required_device<device_t> m_fdc;
required_device<device_t> m_io_i8155;
required_device<i8251_device> m_usart;
required_device<device_t> m_discrete;
required_device<ieee488_device> m_ieee488;
required_device<ram_device> m_ram;
required_device<device_t> m_floppy0;
required_device<device_t> m_floppy1;
virtual void machine_start();
virtual void machine_reset();
virtual void video_start();
UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
void update_interrupt();
DECLARE_WRITE8_MEMBER( ctl_w );
DECLARE_READ8_MEMBER( status_r );
DECLARE_WRITE8_MEMBER( cmd_w );
DECLARE_READ8_MEMBER( ieee488_r );
DECLARE_READ8_MEMBER( port3_r );
DECLARE_READ8_MEMBER( i8155_pa_r );
DECLARE_WRITE8_MEMBER( i8155_pb_w );
DECLARE_WRITE8_MEMBER( i8155_pc_w );
DECLARE_WRITE8_MEMBER( io_i8155_pb_w );
DECLARE_WRITE8_MEMBER( io_i8155_pc_w );
DECLARE_WRITE_LINE_MEMBER( io_i8155_to_w );
DECLARE_WRITE_LINE_MEMBER( srq_w );
DECLARE_WRITE_LINE_MEMBER( atn_w );
DECLARE_WRITE_LINE_MEMBER( rxrdy_w );
DECLARE_WRITE_LINE_MEMBER( txrdy_w );
DECLARE_WRITE_LINE_MEMBER( fdint_w );
DIRECT_UPDATE_MEMBER(vixen_direct_update_handler);
// memory state
int m_reset;
// keyboard state
UINT8 m_col;
// interrupt state
int m_cmd_d0;
int m_cmd_d1;
int m_fdint;
int m_vsync;
int m_srq;
int m_atn;
int m_enb_srq_int;
int m_enb_atn_int;
int m_rxrdy;
int m_txrdy;
int m_int_clk;
int m_enb_xmt_int;
int m_enb_rcv_int;
int m_enb_ring_int;
// video state
int m_alt;
int m_256;
required_shared_ptr<UINT8> m_video_ram;
const UINT8 *m_sync_rom;
const UINT8 *m_char_rom;
DECLARE_DRIVER_INIT(vixen);
};
#endif