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#ifndef __BW2__
#define __BW2__
#include "emu.h"
#include "cpu/z80/z80.h"
#include "imagedev/flopdrv.h"
#include "formats/basicdsk.h"
#include "machine/i8255.h"
#include "machine/ctronics.h"
#include "machine/i8251.h"
#include "machine/pit8253.h"
#include "machine/ram.h"
#include "machine/wd17xx.h"
#include "video/msm6255.h"
#include "rendlay.h"
#define SCREEN_TAG "screen"
#define Z80_TAG "ic1"
#define I8255A_TAG "ic4"
#define WD2797_TAG "ic5"
#define PIT8253_TAG "ic6"
#define I8251_TAG "ic7"
#define MSM6255_TAG "ic49"
#define CENTRONICS_TAG "centronics"
#define BW2_VIDEORAM_SIZE 0x4000
#define BW2_RAMCARD_SIZE 0x80000
enum {
BANK_RAM1 = 0,
BANK_VRAM,
BANK_RAM2, BANK_RAMCARD_ROM = BANK_RAM2,
BANK_RAM3,
BANK_RAM4,
BANK_RAM5, BANK_RAMCARD_RAM = BANK_RAM5,
BANK_RAM6,
BANK_ROM
};
class bw2_state : public driver_device
{
public:
bw2_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_maincpu(*this, Z80_TAG),
m_uart(*this, I8251_TAG),
m_fdc(*this, WD2797_TAG),
m_lcdc(*this, MSM6255_TAG),
m_centronics(*this, CENTRONICS_TAG),
m_ram(*this, RAM_TAG),
m_floppy0(*this, FLOPPY_0),
m_floppy1(*this, FLOPPY_1)
{ }
required_device<cpu_device> m_maincpu;
required_device<i8251_device> m_uart;
required_device<device_t> m_fdc;
required_device<msm6255_device> m_lcdc;
required_device<centronics_device> m_centronics;
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();
int get_ramdisk_size();
void bankswitch(UINT8 data);
void ramcard_bankswitch(UINT8 data);
DECLARE_WRITE8_MEMBER( ramcard_bank_w );
DECLARE_WRITE8_MEMBER( ppi_pa_w );
DECLARE_READ8_MEMBER( ppi_pb_r );
DECLARE_WRITE8_MEMBER( ppi_pc_w );
DECLARE_READ8_MEMBER( ppi_pc_r );
DECLARE_WRITE_LINE_MEMBER( pit_out0_w );
DECLARE_WRITE_LINE_MEMBER( mtron_w );
DECLARE_WRITE_LINE_MEMBER( fdc_drq_w );
// keyboard state
UINT8 m_kb_row;
// memory state
UINT8 *m_ramcard_ram;
UINT8 m_bank;
// floppy state
int m_drive;
int m_mtron;
int m_mfdbk;
// video state
UINT8 *m_video_ram;
};
#endif
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