/***************************************************************************** * * includes/amstrad.h * ****************************************************************************/ #ifndef AMSTRAD_H_ #define AMSTRAD_H_ #include "machine/upd765.h" #include "video/mc6845.h" #include "machine/i8255.h" #include "machine/mc146818.h" #include "imagedev/snapquik.h" #include "machine/cpcexp.h" #include "machine/cpc_ssa1.h" #include "machine/cpc_rom.h" #include "machine/mface2.h" #include "machine/ram.h" #include "imagedev/cassette.h" #include "machine/ctronics.h" /**************************** * Gate Array data (CPC) - ****************************/ typedef struct { bitmap_ind16 *bitmap; /* The bitmap we work on */ UINT8 pen_selected; /* Pen selection */ UINT8 mrer; /* Mode and ROM Enable Register */ UINT8 upper_bank; UINT8 romdis; // ROMDIS signal from the expansion port /* input signals from CRTC */ int vsync; int hsync; int de; int ma; int ra; /* used for timing */ int hsync_after_vsync_counter; int hsync_counter; /* The gate array counts CRTC HSYNC pulses using an internal 6-bit counter. */ /* used for drawing the screen */ attotime last_draw_time; int y; UINT16 *draw_p; /* Position in the bitmap where we are currently drawing */ UINT16 colour; UINT16 address; UINT8 *mode_lookup; UINT8 data; UINT8 ticks; UINT8 ticks_increment; UINT16 line_ticks; UINT8 colour_ticks; UINT8 max_colour_ticks; } gate_array_t; /**************************** * ASIC data (CPC plus) ****************************/ typedef struct { UINT8 *ram; /* pointer to RAM used for the CPC+ ASIC memory-mapped registers */ UINT8 enabled; /* Are CPC plus features enabled/unlocked */ UINT8 pri; /* Programmable raster interrupt */ UINT8 seqptr; /* Current position in the ASIC unlocking sequence */ UINT8 rmr2; /* ROM mapping register 2 */ UINT16 split_ma_base; /* Used to handle split screen support */ UINT16 split_ma_started; /* Used to handle split screen support */ UINT16 vpos; /* Current logical scanline */ UINT16 h_start; /* Position where DE became active */ UINT16 h_end; /* Position where DE became inactive */ UINT8 addr_6845; /* We need these to store a shadow copy of R1 of the mc6845 */ UINT8 horiz_disp; UINT8 hscroll; UINT8 de_start; /* flag to check if DE is been enabled this frame yet */ /* DMA */ UINT8 dma_status; UINT8 dma_clear; /* Set if DMA interrupts are to be cleared automatically */ UINT8 dma_prescaler[3]; /* DMA channel prescaler */ UINT16 dma_repeat[3]; /* Location of the DMA channel's last repeat */ UINT16 dma_addr[3]; /* DMA channel address */ UINT16 dma_loopcount[3]; /* Count loops taken on this channel */ UINT16 dma_pause[3]; /* DMA pause count */ } asic_t; class amstrad_state : public driver_device { public: amstrad_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), m_maincpu(*this, "maincpu"), m_ay(*this, "ay"), m_fdc(*this, "upd765"), m_crtc(*this, "mc6845"), m_screen(*this, "screen"), m_ppi(*this, "ppi8255"), m_centronics(*this, "centronics"), m_cassette(*this, CASSETTE_TAG), m_ram(*this, RAM_TAG), m_exp(*this, "exp"), m_rtc(*this, "rtc") { } required_device m_maincpu; required_device m_ay; optional_device m_fdc; // not on a GX4000 required_device m_crtc; required_device m_screen; required_device m_ppi; optional_device m_centronics; // not on a GX4000 optional_device m_cassette; // not on a GX4000, (or technically, the 6128+) required_device m_ram; optional_device m_exp; // not on a GX4000 optional_device m_rtc; // Aleste 520EX only int m_system_type; UINT8 m_aleste_mode; int m_plus_irq_cause; gate_array_t m_gate_array; asic_t m_asic; int m_GateArray_RamConfiguration; unsigned char *m_AmstradCPC_RamBanks[4]; unsigned char *m_Aleste_RamBanks[4]; int m_aleste_active_page[4]; unsigned char *m_Amstrad_ROM_Table[256]; UINT8 m_ppi_port_inputs[3]; UINT8 m_ppi_port_outputs[3]; int m_aleste_rtc_function; int m_aleste_fdc_int; int m_prev_reg; UINT16 m_GateArray_render_colours[17]; UINT8 m_mode0_lookup[256]; UINT8 m_mode1_lookup[256]; UINT8 m_mode2_lookup[256]; int m_prev_data; int m_printer_bit8_selected; unsigned char m_Psg_FunctionSelected; int m_previous_ppi_portc_w; DECLARE_WRITE8_MEMBER(amstrad_plus_asic_4000_w); DECLARE_WRITE8_MEMBER(amstrad_plus_asic_6000_w); DECLARE_READ8_MEMBER(amstrad_plus_asic_4000_r); DECLARE_READ8_MEMBER(amstrad_plus_asic_6000_r); DECLARE_WRITE8_MEMBER(aleste_msx_mapper); DECLARE_READ8_MEMBER(amstrad_cpc_io_r); DECLARE_WRITE8_MEMBER(amstrad_cpc_io_w); DECLARE_READ8_MEMBER(amstrad_psg_porta_read); void amstrad_plus_seqcheck(int data); DECLARE_DRIVER_INIT(aleste); }; /*----------- defined in machine/amstrad.c -----------*/ READ8_DEVICE_HANDLER( amstrad_ppi_porta_r ); READ8_DEVICE_HANDLER( amstrad_ppi_portb_r ); WRITE8_DEVICE_HANDLER( amstrad_ppi_porta_w ); WRITE8_DEVICE_HANDLER( amstrad_ppi_portc_w ); WRITE_LINE_DEVICE_HANDLER( aleste_interrupt ); WRITE_LINE_DEVICE_HANDLER( cpc_irq_w ); WRITE_LINE_DEVICE_HANDLER( cpc_nmi_w ); WRITE_LINE_DEVICE_HANDLER( cpc_romdis ); WRITE_LINE_DEVICE_HANDLER( cpc_romen ); MACHINE_START( amstrad ); MACHINE_RESET( amstrad ); MACHINE_START( kccomp ); MACHINE_RESET( kccomp ); MACHINE_START( plus ); MACHINE_RESET( plus ); MACHINE_START( gx4000 ); MACHINE_RESET( gx4000 ); MACHINE_START( aleste ); MACHINE_RESET( aleste ); SNAPSHOT_LOAD( amstrad ); DEVICE_IMAGE_LOAD(amstrad_plus_cartridge); extern const mc6845_interface amstrad_mc6845_intf; extern const mc6845_interface amstrad_plus_mc6845_intf; VIDEO_START( amstrad ); SCREEN_UPDATE_IND16( amstrad ); SCREEN_VBLANK( amstrad ); PALETTE_INIT( amstrad_cpc ); /* For CPC464, CPC664, and CPC6128 */ PALETTE_INIT( amstrad_cpc_green ); /* For CPC464, CPC664, and CPC6128 */ PALETTE_INIT( kccomp ); /* For KC Compact */ PALETTE_INIT( amstrad_plus ); /* For CPC464+ and CPC6128+ */ PALETTE_INIT( aleste ); /* For aleste */ SLOT_INTERFACE_START(cpc_exp_cards) SLOT_INTERFACE("ssa1", CPC_SSA1) SLOT_INTERFACE("dkspeech", CPC_DKSPEECH) SLOT_INTERFACE("rom", CPC_ROM) SLOT_INTERFACE("multiface2", CPC_MFACE2) SLOT_INTERFACE_END SLOT_INTERFACE_START(cpcplus_exp_cards) SLOT_INTERFACE("ssa1", CPC_SSA1) SLOT_INTERFACE("dkspeech", CPC_DKSPEECH) SLOT_INTERFACE("rom", CPC_ROM) SLOT_INTERFACE_END #endif /* AMSTRAD_H_ */