/************************************************************************* ldpr8210.h Pioneer PR-8210 laserdisc emulation. **************************************************************************** Copyright Aaron Giles All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name 'MAME' nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY AARON GILES ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL AARON GILES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *************************************************************************/ #pragma once #ifndef __LDPR8210_H__ #define __LDPR8210_H__ #include "laserdsc.h" #include "cpu/mcs48/mcs48.h" //************************************************************************** // DEVICE CONFIGURATION MACROS //************************************************************************** #define MCFG_LASERDISC_PR8210_ADD(_tag) \ MCFG_DEVICE_ADD(_tag, PIONEER_PR8210, 0) \ #define MCFG_LASERDISC_SIMUTREK_ADD(_tag) \ MCFG_DEVICE_ADD(_tag, SIMUTREK_SPECIAL, 0) \ //************************************************************************** // GLOBAL VARIABLES //************************************************************************** // device type definition extern const device_type PIONEER_PR8210; extern const device_type SIMUTREK_SPECIAL; //************************************************************************** // TYPE DEFINITIONS //************************************************************************** // pioneer PIA subclass class pioneer_pia { public: UINT8 frame[7]; // (20-26) 7 characters for the chapter/frame UINT8 text[17]; // (20-30) 17 characters for the display UINT8 control; // (40) control lines UINT8 latchdisplay; // flag: set if the display was latched UINT8 portb; // (60) port B value (LEDs) UINT8 display; // (80) display enable UINT8 porta; // (A0) port A value (from serial decoder) UINT8 vbi1; // (C0) VBI decoding state 1 UINT8 vbi2; // (E0) VBI decoding state 2 }; // ======================> pioneer_pr8210_device // base pr8210 class class pioneer_pr8210_device : public laserdisc_device { public: // construction/destruction pioneer_pr8210_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); pioneer_pr8210_device(const machine_config &mconfig, device_type type, const char *name, const char *shortname, const char *tag, device_t *owner, UINT32 clock); // input and output void control_w(UINT8 data); protected: // timer IDs enum { TID_VSYNC_OFF = TID_FIRST_PLAYER_TIMER, TID_VBI_DATA_FETCH, TID_FIRST_SUBCLASS_TIMER }; // device-level overrides virtual void device_start(); virtual void device_reset(); virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr); virtual const rom_entry *device_rom_region() const; virtual machine_config_constructor device_mconfig_additions() const; // subclass overrides virtual void player_vsync(const vbi_metadata &vbi, int fieldnum, attotime curtime); virtual INT32 player_update(const vbi_metadata &vbi, int fieldnum, attotime curtime); virtual void player_overlay(bitmap_yuy16 &bitmap); // internal helpers bool focus_on() const { return !(m_i8049_port1 & 0x08); } bool spdl_on() const { return !(m_i8049_port1 & 0x10); } bool laser_on() const { return !(m_i8049_port2 & 0x01); } virtual bool override_control() const { return false; } void update_video_squelch() { set_video_squelch((m_i8049_port1 & 0x20) != 0); } virtual void update_audio_squelch() { set_audio_squelch((m_i8049_port1 & 0x40) || !(m_pia.portb & 0x01), (m_i8049_port1 & 0x40) || !(m_pia.portb & 0x02)); } public: // internal read/write handlers DECLARE_READ8_MEMBER( i8049_pia_r ); DECLARE_WRITE8_MEMBER( i8049_pia_w ); DECLARE_READ8_MEMBER( i8049_bus_r ); DECLARE_WRITE8_MEMBER( i8049_port1_w ); DECLARE_WRITE8_MEMBER( i8049_port2_w ); DECLARE_READ8_MEMBER( i8049_t0_r ); DECLARE_READ8_MEMBER( i8049_t1_r ); protected: // internal overlay helpers void overlay_draw_group(bitmap_yuy16 &bitmap, const UINT8 *text, int count, float xstart); void overlay_erase(bitmap_yuy16 &bitmap, float xstart, float xend); void overlay_draw_char(bitmap_yuy16 &bitmap, UINT8 ch, float xstart); // internal state UINT8 m_control; // control line state UINT8 m_lastcommand; // last command seen UINT16 m_accumulator; // bit accumulator attotime m_lastcommandtime; // time of the last command attotime m_lastbittime; // time of last bit received attotime m_firstbittime; // time of first bit in command // low-level emulation data required_device m_i8049_cpu; // 8049 CPU device attotime m_slowtrg; // time of the last SLOW TRG pioneer_pia m_pia; // PIA state bool m_vsync; // live VSYNC state UINT8 m_i8049_port1; // 8049 port 1 state UINT8 m_i8049_port2; // 8049 port 2 state }; // ======================> simutrek_special_device class simutrek_special_device : public pioneer_pr8210_device { public: // construction/destruction simutrek_special_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); // input and output void data_w(UINT8 data); UINT8 ready_r() const { return !m_data_ready; } UINT8 status_r() const { return ((m_i8748_port2 & 0x03) == 0x03) ? ASSERT_LINE : CLEAR_LINE; } // external controls void set_external_audio_squelch(int state); protected: // timer IDs enum { TID_IRQ_OFF = TID_FIRST_SUBCLASS_TIMER, TID_LATCH_DATA }; // subclass overrides virtual void player_vsync(const vbi_metadata &vbi, int fieldnum, attotime curtime); // device-level overrides virtual void device_start(); virtual void device_reset(); virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr); virtual const rom_entry *device_rom_region() const; virtual machine_config_constructor device_mconfig_additions() const; // internal helpers virtual bool override_control() const { return m_controlthis; } virtual void update_audio_squelch() { set_audio_squelch(m_audio_squelch, m_audio_squelch); } public: // internal read/write handlers DECLARE_READ8_MEMBER( i8748_port2_r ); DECLARE_WRITE8_MEMBER( i8748_port2_w ); DECLARE_READ8_MEMBER( i8748_data_r ); DECLARE_READ8_MEMBER( i8748_t0_r ); protected: // internal state required_device m_i8748_cpu; UINT8 m_audio_squelch; // audio squelch value UINT8 m_data; // parallel data for simutrek bool m_data_ready; // ready flag for simutrek data UINT8 m_i8748_port2; // 8748 port 2 state UINT8 m_controlnext; // latch to control next pair of fields UINT8 m_controlthis; // latched value for our control over the current pair of fields }; #endif