1 // license:BSD-3-Clause 2 // copyright-holders:Aaron Giles 3 /*************************************************************************** 4 5 Atari "Stella on Steroids" hardware 6 7 ***************************************************************************/ 8 #ifndef MAME_INCLUDES_BEATHEAD_H 9 #define MAME_INCLUDES_BEATHEAD_H 10 11 #pragma once 12 13 #include "machine/timer.h" 14 #include "cpu/asap/asap.h" 15 #include "audio/atarijsa.h" 16 #include "emupal.h" 17 #include "screen.h" 18 19 class beathead_state : public driver_device 20 { 21 public: beathead_state(const machine_config & mconfig,device_type type,const char * tag)22 beathead_state(const machine_config &mconfig, device_type type, const char *tag) : 23 driver_device(mconfig, type, tag), 24 m_maincpu(*this, "maincpu"), 25 m_palette(*this, "palette"), 26 m_screen(*this, "screen"), 27 m_jsa(*this, "jsa"), 28 m_scan_timer(*this, "scan_timer"), 29 m_videoram(*this, "videoram"), 30 m_vram_bulk_latch(*this, "vram_bulk_latch"), 31 m_palette_select(*this, "palette_select"), 32 m_ram_base(*this, "ram_base"), 33 m_rom_base(*this, "rom_base") 34 { } 35 36 void beathead(machine_config &config); 37 38 protected: 39 // in drivers/beathead.cpp 40 void update_interrupts(); 41 void interrupt_control_w(offs_t offset, uint32_t data); 42 uint32_t interrupt_control_r(); 43 void sound_reset_w(offs_t offset, uint32_t data); 44 void coin_count_w(offs_t offset, uint32_t data); 45 46 // in video/beathead.cpp 47 void vram_transparent_w(offs_t offset, uint32_t data, uint32_t mem_mask = ~0); 48 void vram_bulk_w(offs_t offset, uint32_t data, uint32_t mem_mask = ~0); 49 void vram_latch_w(offs_t offset, uint32_t data); 50 void vram_copy_w(offs_t offset, uint32_t data); 51 void finescroll_w(offs_t offset, uint32_t data, uint32_t mem_mask = ~0); 52 uint32_t hsync_ram_r(offs_t offset); 53 void hsync_ram_w(offs_t offset, uint32_t data, uint32_t mem_mask = ~0); 54 TIMER_DEVICE_CALLBACK_MEMBER(scanline_callback); 55 56 virtual void machine_reset() override; 57 virtual void video_start() override; 58 void main_map(address_map &map); 59 60 uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); 61 62 private: 63 required_device<cpu_device> m_maincpu; 64 required_device<palette_device> m_palette; 65 required_device<screen_device> m_screen; 66 67 required_device<atari_jsa_iii_device> m_jsa; 68 required_device<timer_device> m_scan_timer; 69 70 required_shared_ptr<uint32_t> m_videoram; 71 72 required_shared_ptr<uint32_t> m_vram_bulk_latch; 73 required_shared_ptr<uint32_t> m_palette_select; 74 75 uint32_t m_finescroll; 76 offs_t m_vram_latch_offset; 77 78 offs_t m_hsyncram_offset; 79 offs_t m_hsyncram_start; 80 uint8_t m_hsyncram[0x800]; 81 82 required_shared_ptr<uint32_t> m_ram_base; 83 required_shared_ptr<uint32_t> m_rom_base; 84 85 attotime m_hblank_offset; 86 87 uint8_t m_irq_line_state; 88 uint8_t m_irq_enable[3]; 89 uint8_t m_irq_state[3]; 90 }; 91 92 #endif // MAME_INCLUDES_BEATHEAD_H 93