1 // license:BSD-3-Clause 2 // copyright-holders:Mike Balfour, Aaron Giles 3 /************************************************************************* 4 5 Atari Cloud 9 (prototype) hardware 6 7 *************************************************************************/ 8 #ifndef MAME_INCLUDES_CLOUD9_H 9 #define MAME_INCLUDES_CLOUD9_H 10 11 #pragma once 12 13 #include "cpu/m6502/m6502.h" 14 #include "machine/74259.h" 15 #include "machine/x2212.h" 16 #include "emupal.h" 17 #include "screen.h" 18 19 class cloud9_state : public driver_device 20 { 21 public: cloud9_state(const machine_config & mconfig,device_type type,const char * tag)22 cloud9_state(const machine_config &mconfig, device_type type, const char *tag) : 23 driver_device(mconfig, type, tag), 24 m_maincpu(*this, "maincpu"), 25 m_nvram(*this, "nvram") , 26 m_spriteram(*this, "spriteram"), 27 m_paletteram(*this, "paletteram"), 28 m_gfxdecode(*this, "gfxdecode"), 29 m_screen(*this, "screen"), 30 m_palette(*this, "palette"), 31 m_videolatch(*this, "videolatch") 32 { } 33 34 DECLARE_READ_LINE_MEMBER(vblank_r); 35 void cloud9(machine_config &config); 36 37 protected: 38 void irq_ack_w(uint8_t data); 39 uint8_t leta_r(offs_t offset); 40 void nvram_recall_w(uint8_t data); 41 void nvram_store_w(uint8_t data); 42 void cloud9_paletteram_w(offs_t offset, uint8_t data); 43 void cloud9_videoram_w(offs_t offset, uint8_t data); 44 uint8_t cloud9_bitmode_r(); 45 void cloud9_bitmode_w(uint8_t data); 46 void cloud9_bitmode_addr_w(offs_t offset, uint8_t data); 47 virtual void machine_start() override; 48 virtual void machine_reset() override; 49 virtual void video_start() override; 50 uint32_t screen_update_cloud9(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); 51 TIMER_CALLBACK_MEMBER(clock_irq); 52 inline void cloud9_write_vram( uint16_t addr, uint8_t data, uint8_t bitmd, uint8_t pixba ); 53 inline void bitmode_autoinc(); 54 inline void schedule_next_irq(int curscanline); 55 void cloud9_map(address_map &map); 56 57 private: 58 /* devices */ 59 required_device<m6502_device> m_maincpu; 60 required_device<x2212_device> m_nvram; 61 /* memory pointers */ 62 std::unique_ptr<uint8_t[]> m_videoram; 63 required_shared_ptr<uint8_t> m_spriteram; 64 required_shared_ptr<uint8_t> m_paletteram; 65 66 required_device<gfxdecode_device> m_gfxdecode; 67 required_device<screen_device> m_screen; 68 required_device<palette_device> m_palette; 69 required_device<ls259_device> m_videolatch; 70 71 /* video-related */ 72 const uint8_t *m_syncprom; 73 const uint8_t *m_wpprom; 74 const uint8_t *m_priprom; 75 bitmap_ind16 m_spritebitmap; 76 double m_rweights[3]; 77 double m_gweights[3]; 78 double m_bweights[3]; 79 uint8_t m_bitmode_addr[2]; 80 81 /* misc */ 82 int m_vblank_start; 83 int m_vblank_end; 84 emu_timer *m_irq_timer; 85 uint8_t m_irq_state; 86 }; 87 88 #endif // MAME_INCLUDES_CLOUD9_H 89