/************************************************************************* ldvp931.h Philips 22VP931 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 __LDVP931_H__ #define __LDVP931_H__ #include "laserdsc.h" #include "cpu/mcs48/mcs48.h" //************************************************************************** // DEVICE CONFIGURATION MACROS //************************************************************************** #define MCFG_LASERDISC_22VP931_ADD(_tag) \ MCFG_DEVICE_ADD(_tag, PHILLIPS_22VP931, 0) //************************************************************************** // GLOBAL VARIABLES //************************************************************************** // device type definition extern const device_type PHILLIPS_22VP931; //************************************************************************** // TYPE DEFINITIONS //************************************************************************** // ======================> phillips_22vp931_device // base _22vp931 class class phillips_22vp931_device : public laserdisc_device { public: // types typedef delegate data_ready_delegate; // construction/destruction phillips_22vp931_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); // input and output void data_w(UINT8 data) { synchronize(TID_DEFERRED_DATA, data); } void reset_w(UINT8 data); UINT8 data_r(); UINT8 ready_r() { return m_fromcontroller_pending ? CLEAR_LINE : ASSERT_LINE; } UINT8 data_available_r() { return m_tocontroller_pending ? ASSERT_LINE : CLEAR_LINE; } // configuration void set_data_ready_callback(data_ready_delegate callback) { m_data_ready = callback; } protected: // timer IDs enum { TID_IRQ_OFF = TID_FIRST_PLAYER_TIMER, TID_DATA_STROBE_OFF, TID_ERP_OFF, TID_HALF_TRACK, TID_VBI_DATA_FETCH, TID_DEFERRED_DATA }; // 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) { } public: // internal read/write handlers DECLARE_WRITE8_MEMBER( i8049_output0_w ); DECLARE_WRITE8_MEMBER( i8049_output1_w ); DECLARE_WRITE8_MEMBER( i8049_lcd_w ); DECLARE_READ8_MEMBER( i8049_unknown_r ); DECLARE_READ8_MEMBER( i8049_keypad_r ); DECLARE_READ8_MEMBER( i8049_datic_r ); DECLARE_READ8_MEMBER( i8049_from_controller_r ); DECLARE_WRITE8_MEMBER( i8049_to_controller_w ); DECLARE_READ8_MEMBER( i8049_port1_r ); DECLARE_WRITE8_MEMBER( i8049_port1_w ); DECLARE_READ8_MEMBER( i8049_port2_r ); DECLARE_WRITE8_MEMBER( i8049_port2_w ); DECLARE_READ8_MEMBER( i8049_t0_r ); DECLARE_READ8_MEMBER( i8049_t1_r ); protected: // internal state required_device m_i8049_cpu; // CPU index of the 8049 emu_timer * m_tracktimer; // timer device data_ready_delegate m_data_ready; // data ready callback // I/O port states UINT8 m_i8049_out0; // output 0 state UINT8 m_i8049_out1; // output 1 state UINT8 m_i8049_port1; // port 1 state // DATIC circuit implementation UINT8 m_daticval; // latched DATIC value UINT8 m_daticerp; // /ERP value from DATIC UINT8 m_datastrobe; // DATA STROBE line from DATIC // communication status UINT8 m_reset_state; // state of the reset input UINT8 m_fromcontroller; // command byte from the controller bool m_fromcontroller_pending; // true if data is pending UINT8 m_tocontroller; // command byte to the controller bool m_tocontroller_pending; // true if data is pending // tracking INT8 m_trackdir; // direction of tracking UINT8 m_trackstate; // state of tracking // debugging UINT8 m_cmdbuf[3]; // 3 bytes worth of commands UINT8 m_cmdcount; // number of command bytes seen INT16 m_advanced; // number of frames advanced }; #endif