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// license:BSD-3-Clause
// copyright-holders:Mike Balfour, Aaron Giles
/*************************************************************************
Atari Cloud 9 (prototype) hardware
*************************************************************************/
#ifndef MAME_INCLUDES_CLOUD9_H
#define MAME_INCLUDES_CLOUD9_H
#pragma once
#include "cpu/m6502/m6502.h"
#include "machine/74259.h"
#include "machine/x2212.h"
#include "emupal.h"
#include "screen.h"
class cloud9_state : public driver_device
{
public:
cloud9_state(const machine_config &mconfig, device_type type, const char *tag) :
driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_nvram(*this, "nvram") ,
m_spriteram(*this, "spriteram"),
m_paletteram(*this, "paletteram"),
m_gfxdecode(*this, "gfxdecode"),
m_screen(*this, "screen"),
m_palette(*this, "palette"),
m_videolatch(*this, "videolatch")
{ }
DECLARE_READ_LINE_MEMBER(vblank_r);
void cloud9(machine_config &config);
protected:
void irq_ack_w(uint8_t data);
uint8_t leta_r(offs_t offset);
void nvram_recall_w(uint8_t data);
void nvram_store_w(uint8_t data);
void cloud9_paletteram_w(offs_t offset, uint8_t data);
void cloud9_videoram_w(offs_t offset, uint8_t data);
uint8_t cloud9_bitmode_r();
void cloud9_bitmode_w(uint8_t data);
void cloud9_bitmode_addr_w(offs_t offset, uint8_t data);
virtual void machine_start() override;
virtual void machine_reset() override;
virtual void video_start() override;
uint32_t screen_update_cloud9(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
TIMER_CALLBACK_MEMBER(clock_irq);
inline void cloud9_write_vram( uint16_t addr, uint8_t data, uint8_t bitmd, uint8_t pixba );
inline void bitmode_autoinc();
inline void schedule_next_irq(int curscanline);
void cloud9_map(address_map &map);
private:
/* devices */
required_device<m6502_device> m_maincpu;
required_device<x2212_device> m_nvram;
/* memory pointers */
std::unique_ptr<uint8_t[]> m_videoram;
required_shared_ptr<uint8_t> m_spriteram;
required_shared_ptr<uint8_t> m_paletteram;
required_device<gfxdecode_device> m_gfxdecode;
required_device<screen_device> m_screen;
required_device<palette_device> m_palette;
required_device<ls259_device> m_videolatch;
/* video-related */
const uint8_t *m_syncprom = nullptr;
const uint8_t *m_wpprom = nullptr;
const uint8_t *m_priprom = nullptr;
bitmap_ind16 m_spritebitmap = 0;
double m_rweights[3]{};
double m_gweights[3]{};
double m_bweights[3]{};
uint8_t m_bitmode_addr[2]{};
/* misc */
int m_vblank_start = 0;
int m_vblank_end = 0;
emu_timer *m_irq_timer = nullptr;
uint8_t m_irq_state = 0U;
};
#endif // MAME_INCLUDES_CLOUD9_H
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