/*****************************************************************************
*
* includes/abc80.h
*
****************************************************************************/
#ifndef __ABC80__
#define __ABC80__
#include "emu.h"
#include "cpu/z80/z80.h"
#include "cpu/z80/z80daisy.h"
#include "imagedev/flopdrv.h"
#include "imagedev/printer.h"
#include "imagedev/cassette.h"
#include "machine/abcbus.h"
#include "machine/abc80kb.h"
#include "machine/abc830.h"
#include "machine/ram.h"
#include "machine/serial.h"
#include "machine/z80pio.h"
#include "sound/sn76477.h"
#define ABC80_HTOTAL 384
#define ABC80_HBEND 35
#define ABC80_HBSTART 384
#define ABC80_VTOTAL 312
#define ABC80_VBEND 15
#define ABC80_VBSTART 312
#define ABC80_K5_HSYNC 0x01
#define ABC80_K5_DH 0x02
#define ABC80_K5_LINE_END 0x04
#define ABC80_K5_ROW_START 0x08
#define ABC80_K2_VSYNC 0x01
#define ABC80_K2_DV 0x02
#define ABC80_K2_FRAME_END 0x04
#define ABC80_K2_FRAME_RESET 0x08
#define ABC80_J3_BLANK 0x01
#define ABC80_J3_TEXT 0x02
#define ABC80_J3_GRAPHICS 0x04
#define ABC80_J3_VERSAL 0x08
#define ABC80_E7_VIDEO_RAM 0x01
#define ABC80_E7_INT_RAM 0x02
#define ABC80_E7_31K_EXT_RAM 0x04
#define ABC80_E7_16K_INT_RAM 0x08
#define ABC80_CHAR_CURSOR 0x80
#define SCREEN_TAG "screen"
#define Z80_TAG "ab67"
#define Z80PIO_TAG "cd67"
#define SN76477_TAG "g8"
#define RS232_TAG "ser"
#define TIMER_CASSETTE_TAG "cass"
class abc80_state : public driver_device
{
public:
abc80_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_psg(*this, SN76477_TAG),
m_cassette(*this, CASSETTE_TAG),
m_bus(*this, ABCBUS_TAG),
m_kb(*this, ABC80_KEYBOARD_TAG),
m_ram(*this, RAM_TAG),
m_rs232(*this, RS232_TAG),
m_tape_in(1),
m_tape_in_latch(1)
{ }
required_device<cpu_device> m_maincpu;
required_device<z80pio_device> m_pio;
required_device<device_t> m_psg;
required_device<cassette_image_device> m_cassette;
required_device<abcbus_slot_device> m_bus;
required_device<abc80_keyboard_device> m_kb;
required_device<ram_device> m_ram;
required_device<rs232_port_device> m_rs232;
enum
{
TIMER_ID_PIO,
TIMER_ID_CASSETTE,
TIMER_ID_BLINK,
TIMER_ID_VSYNC_ON,
TIMER_ID_VSYNC_OFF,
TIMER_ID_FAKE_KEYBOARD_SCAN,
TIMER_ID_FAKE_KEYBOARD_CLEAR
};
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
virtual void machine_start();
virtual void video_start();
UINT32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
void update_screen(bitmap_rgb32 &bitmap, const rectangle &cliprect);
void scan_keyboard();
DECLARE_READ8_MEMBER( read );
DECLARE_WRITE8_MEMBER( write );
DECLARE_WRITE_LINE_MEMBER( vco_voltage_w );
DECLARE_READ8_MEMBER( pio_pa_r );
DECLARE_READ8_MEMBER( pio_pb_r );
DECLARE_WRITE8_MEMBER( pio_pb_w );
DECLARE_WRITE_LINE_MEMBER( keydown_w );
// keyboard state
int m_key_data;
int m_key_strobe;
int m_pio_astb;
// video state
UINT8 *m_video_ram;
UINT8 m_latch;
int m_blink;
// cassette state
int m_tape_in;
int m_tape_in_latch;
// memory regions
const UINT8 *m_mmu_rom; // memory mapping ROM
const UINT8 *m_char_rom; // character generator ROM
const UINT8 *m_hsync_prom; // horizontal sync PROM
const UINT8 *m_vsync_prom; // horizontal sync PROM
const UINT8 *m_line_prom; // line address PROM
const UINT8 *m_attr_prom; // character attribute PROM
// timers
emu_timer *m_pio_timer;
emu_timer *m_cassette_timer;
emu_timer *m_blink_timer;
emu_timer *m_vsync_on_timer;
emu_timer *m_vsync_off_timer;
emu_timer *m_kb_timer;
};
//----------- defined in video/abc80.c -----------
MACHINE_CONFIG_EXTERN( abc80_video );
#endif