// license:BSD-3-Clause // copyright-holders:Ariane Fugmann #ifndef MAME_MACHINE_S32COMM_H #define MAME_MACHINE_S32COMM_H #pragma once #define S32COMM_SIMULATION #include "osdfile.h" //************************************************************************** // TYPE DEFINITIONS //************************************************************************** class s32comm_device : public device_t { public: // construction/destruction s32comm_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); // single bit registers (74LS74) uint8_t zfg_r(offs_t offset); void zfg_w(uint8_t data); // shared memory 2k uint8_t share_r(offs_t offset); void share_w(offs_t offset, uint8_t data); // public API - stuff that gets called from host // shared memory 2k // reads/writes at I/O 0x800xxx // - share_r // - share_w // single bit registers (74LS74) // reads/writes at I/O 0x801000 uint8_t cn_r(); void cn_w(uint8_t data); // reads/writes at I/O 0x801002 uint8_t fg_r(); void fg_w(uint8_t data); // IRQ logic - 5 = VINT, 7 = DLC void check_vint_irq(); #ifdef S32COMM_SIMULATION void set_linktype(uint16_t linktype); #endif protected: // device-level overrides virtual void device_start() override; virtual void device_reset() override; // optional information overrides virtual void device_add_mconfig(machine_config &config) override; private: uint8_t m_shared[0x800]{}; // 2k shared memory uint8_t m_zfg = 0; // z80 flip gate? purpose unknown, bit0 is stored uint8_t m_cn = 0; // bit0 is used to enable/disable the comm board uint8_t m_fg = 0; // flip gate? purpose unknown, bit0 is stored, bit7 is connected to ZFG bit 0 osd_file::ptr m_line_rx; // rx line - can be either differential, simple serial or toslink osd_file::ptr m_line_tx; // tx line - is differential, simple serial and toslink char m_localhost[256]{}; char m_remotehost[256]{}; uint8_t m_buffer0[0x100]{}; uint8_t m_buffer1[0x100]{}; uint8_t m_framesync = 0; #ifdef S32COMM_SIMULATION uint8_t m_linkenable = 0; uint16_t m_linktimer = 0; uint8_t m_linkalive = 0; uint8_t m_linkid = 0; uint8_t m_linkcount = 0; uint16_t m_linktype = 0; void comm_tick(); int read_frame(int dataSize); void send_data(uint8_t frameType, int frameStart, int frameSize, int dataSize); void send_frame(int dataSize); void comm_tick_14084(); void comm_tick_15033(); void comm_tick_15612(); #endif }; // device type definition DECLARE_DEVICE_TYPE(S32COMM, s32comm_device) #endif // MAME_MACHINE_S32COMM_H