// license:BSD-3-Clause // copyright-holders:Aaron Giles /************************************************************************* ldv1000.h Pioneer LD-V1000 laserdisc emulation. *************************************************************************/ #pragma once #ifndef __LDV1000_H__ #define __LDV1000_H__ #include "laserdsc.h" #include "cpu/z80/z80.h" #include "cpu/mcs48/mcs48.h" #include "machine/z80ctc.h" //************************************************************************** // DEVICE CONFIGURATION MACROS //************************************************************************** #define MCFG_LASERDISC_LDV1000_ADD(_tag) \ MCFG_DEVICE_ADD(_tag, PIONEER_LDV1000, 0) #define MCFG_LASERDISC_LDV1000_COMMAND_STROBE_CB(_cb) \ downcast(device)->set_command_strobe_callback(DEVCB_##_cb); //************************************************************************** // GLOBAL VARIABLES //************************************************************************** // device type definition extern const device_type PIONEER_LDV1000; //************************************************************************** // TYPE DEFINITIONS //************************************************************************** // ======================> pioneer_ldv1000_device // base ldv1000 class class pioneer_ldv1000_device : public laserdisc_device { public: // construction/destruction pioneer_ldv1000_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); template void set_command_strobe_callback(_cmd_strobe_cb latch) { m_command_strobe_cb.set_callback(latch); } // input and output void data_w(UINT8 data); void enter_w(UINT8 data); UINT8 status_r() const { return m_status; } UINT8 status_strobe_r() const { return (m_portc1 & 0x20) ? ASSERT_LINE : CLEAR_LINE; } UINT8 command_strobe_r() const { return (m_portc1 & 0x10) ? ASSERT_LINE : CLEAR_LINE; } protected: // timer IDs enum { TID_MULTIJUMP = TID_FIRST_PLAYER_TIMER, TID_VSYNC_OFF, TID_VBI_DATA_FETCH }; // device-level overrides virtual void device_start() override; virtual void device_reset() override; virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override; virtual const rom_entry *device_rom_region() const override; virtual machine_config_constructor device_mconfig_additions() const override; // subclass overrides virtual void player_vsync(const vbi_metadata &vbi, int fieldnum, const attotime &curtime) override; virtual INT32 player_update(const vbi_metadata &vbi, int fieldnum, const attotime &curtime) override; virtual void player_overlay(bitmap_yuy16 &bitmap) override { } // internal helpers bool focus_on() const { return !(m_portb1 & 0x01); } bool spdl_on() const { return !(m_portb1 & 0x02); } bool laser_on() const { return (m_portb1 & 0x40); } public: // internal read/write handlers DECLARE_WRITE_LINE_MEMBER( ctc_interrupt ); DECLARE_WRITE8_MEMBER( z80_decoder_display_port_w ); DECLARE_READ8_MEMBER( z80_decoder_display_port_r ); DECLARE_READ8_MEMBER( z80_controller_r ); DECLARE_WRITE8_MEMBER( z80_controller_w ); DECLARE_WRITE8_MEMBER( ppi0_porta_w ); DECLARE_READ8_MEMBER( ppi0_portb_r ); DECLARE_READ8_MEMBER( ppi0_portc_r ); DECLARE_WRITE8_MEMBER( ppi0_portc_w ); DECLARE_READ8_MEMBER( ppi1_porta_r ); DECLARE_WRITE8_MEMBER( ppi1_portb_w ); DECLARE_WRITE8_MEMBER( ppi1_portc_w ); protected: // internal state required_device m_z80_cpu; /* CPU index of the Z80 */ required_device m_z80_ctc; /* CTC device */ emu_timer * m_multitimer; /* multi-jump timer device */ devcb_write_line m_command_strobe_cb; /* communication status */ UINT8 m_command; /* command byte to the player */ UINT8 m_status; /* status byte from the player */ bool m_vsync; /* VSYNC state */ /* I/O port states */ UINT8 m_counter_start; /* starting value for counter */ UINT8 m_counter; /* current counter value */ UINT8 m_portc0; /* port C on PPI 0 */ UINT8 m_portb1; /* port B on PPI 1 */ UINT8 m_portc1; /* port C on PPI 1 */ /* display/decode circuit emulation */ UINT8 m_portselect; /* selection of which port to access */ UINT8 m_display[2][20]; /* display lines */ UINT8 m_dispindex; /* index within the display line */ UINT8 m_vbi[7*3]; /* VBI data */ bool m_vbiready; /* VBI ready flag */ UINT8 m_vbiindex; /* index within the VBI data */ }; #endif