// license:BSD-3-Clause // copyright-holders:Ariane Fugmann #pragma once #ifndef __M2COMM_H__ #define __M2COMM_H__ #define __M2COMM_SIMULATION__ #include "emu.h" #define MCFG_M2COMM_ADD(_tag ) \ MCFG_DEVICE_ADD(_tag, M2COMM, 0) //************************************************************************** // TYPE DEFINITIONS //************************************************************************** class m2comm_device : public device_t { public: // construction/destruction m2comm_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); // optional information overrides virtual machine_config_constructor device_mconfig_additions() const; // single bit registers (74LS74) DECLARE_READ8_MEMBER(zfg_r); DECLARE_WRITE8_MEMBER(zfg_w); // shared memory 2k DECLARE_READ8_MEMBER(share_r); DECLARE_WRITE8_MEMBER(share_w); // public API - stuff that gets called from host // shared memory 16k // reads/writes at I/O 0x01a10000-0x01a13fff // - share_r // - share_w // single bit registers (74LS74) // reads/writes at I/O 0x01a14000 DECLARE_READ8_MEMBER(cn_r); DECLARE_WRITE8_MEMBER(cn_w); // reads/writes at I/O 0x01a14002 DECLARE_READ8_MEMBER(fg_r); DECLARE_WRITE8_MEMBER(fg_w); // IRQ logic - 5 = VINT, 7 = DLC void check_vint_irq(); #ifdef __M2COMM_SIMULATION__ void set_linktype(UINT16 linktype); #endif protected: // device-level overrides virtual void device_start(); virtual void device_reset(); private: UINT8 m_shared[0x4000]; // 16k shared memory UINT8 m_zfg; // z80 flip gate? purpose unknown, bit0 is stored UINT8 m_cn; // bit0 is used to enable/disable the comm board UINT8 m_fg; // flip gate? purpose unknown, bit0 is stored, bit7 is connected to ZFG bit 0 emu_file m_line_rx; // rx line - can be either differential, simple serial or toslink emu_file m_line_tx; // tx line - is differential, simple serial and toslink char m_localhost[256]; char m_remotehost[256]; UINT8 m_buffer[0x4000]; #ifdef __M2COMM_SIMULATION__ UINT8 m_linkenable; UINT16 m_linktimer; UINT8 m_linkalive; UINT8 m_linkid; UINT8 m_linkcount; UINT16 m_linktype; void comm_tick(); void comm_tick_16726(); #endif }; // device type definition extern const device_type M2COMM; #endif /* __M2COMM_H__ */