// license:BSD-3-Clause // copyright-holders:Curt Coder /***************************************************************************** * * includes/abc80.h * ****************************************************************************/ #ifndef MAME_INCLUDES_ABC80_H #define MAME_INCLUDES_ABC80_H #pragma once #include "bus/abcbus/abcbus.h" #include "bus/rs232/rs232.h" #include "cpu/z80/z80.h" #include "machine/z80daisy.h" #include "imagedev/cassette.h" #include "imagedev/snapquik.h" #include "machine/abc80kb.h" #include "machine/keyboard.h" #include "machine/ram.h" #include "machine/z80pio.h" #include "sound/sn76477.h" #include "emupal.h" #define ABC80_HTOTAL 384 #define ABC80_HBEND 30 #define ABC80_HBSTART 384 #define ABC80_VTOTAL 313 #define ABC80_VBEND 15 #define ABC80_VBSTART 313 #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 CASSETTE_TAG "cassette" #define KEYBOARD_TAG "keyboard" #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_csg(*this, SN76477_TAG), m_cassette(*this, "cassette"), m_bus(*this, "bus"), m_kb(*this, ABC80_KEYBOARD_TAG), m_ram(*this, RAM_TAG), m_rs232(*this, RS232_TAG), m_palette(*this, "palette"), m_screen(*this, SCREEN_TAG), m_rom(*this, Z80_TAG), m_mmu_rom(*this, "mmu"), m_char_rom(*this, "chargen"), m_hsync_prom(*this, "hsync"), m_vsync_prom(*this, "vsync"), m_line_prom(*this, "line"), m_attr_prom(*this, "attr"), m_video_ram(*this, "video_ram", 0x400, ENDIANNESS_LITTLE), m_motor(false), m_tape_in(1), m_tape_in_latch(1) { } void abc80(machine_config &config); void abc80_video(machine_config &config); static constexpr feature_type imperfect_features() { return feature::KEYBOARD; } protected: virtual void machine_start() override; virtual void video_start() override; void abc80_mem(address_map &map); void abc80_io(address_map &map); TIMER_CALLBACK_MEMBER(scanline_tick); TIMER_CALLBACK_MEMBER(cassette_update); TIMER_CALLBACK_MEMBER(blink_tick); TIMER_CALLBACK_MEMBER(vsync_on); TIMER_CALLBACK_MEMBER(vsync_off); TIMER_CALLBACK_MEMBER(clear_keyboard); u32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect); void draw_scanline(bitmap_rgb32 &bitmap, int y); u8 read(offs_t offset); void write(offs_t offset, u8 data); DECLARE_WRITE_LINE_MEMBER( vco_voltage_w ); u8 pio_pa_r(); u8 pio_pb_r(); void pio_pb_w(u8 data); DECLARE_WRITE_LINE_MEMBER( keydown_w ); void kbd_w(u8 data); void csg_w(u8 data); DECLARE_QUICKLOAD_LOAD_MEMBER(quickload_cb); enum { BOFA = 0xfe1c, EOFA = 0xfe1e, HEAD = 0xfe20 }; enum { MMU_XM = 0x01, MMU_ROM = 0x02, MMU_VRAMS = 0x04, MMU_RAM = 0x08 }; required_device m_maincpu; required_device m_pio; required_device m_csg; required_device m_cassette; required_device m_bus; required_device m_kb; required_device m_ram; required_device m_rs232; required_device m_palette; required_device m_screen; required_memory_region m_rom; required_memory_region m_mmu_rom; required_memory_region m_char_rom; required_memory_region m_hsync_prom; required_memory_region m_vsync_prom; required_memory_region m_line_prom; required_memory_region m_attr_prom; memory_share_creator m_video_ram; // keyboard state int m_key_data = 0; int m_key_strobe = 0; int m_pio_astb = 0; // video state bitmap_rgb32 m_bitmap; u8 m_latch = 0; int m_blink = 0; int m_c = 0; int m_r = 0; int m_mode = 0; // cassette state bool m_motor; int m_tape_in; int m_tape_in_latch; // timers emu_timer *m_scanline_timer = nullptr; emu_timer *m_cassette_timer = nullptr; emu_timer *m_blink_timer = nullptr; emu_timer *m_vsync_on_timer = nullptr; emu_timer *m_vsync_off_timer = nullptr; emu_timer *m_keyboard_clear_timer = nullptr; }; #endif // MAME_INCLUDES_ABC80_H