// license:BSD-3-Clause // copyright-holders:Ariane Fugmann #ifndef MAME_MACHINE_M1COMM_H #define MAME_MACHINE_M1COMM_H #pragma once #define M1COMM_SIMULATION #include "osdfile.h" #include "cpu/z80/z80.h" #include "machine/am9517a.h" #include "machine/mb89374.h" //************************************************************************** // TYPE DEFINITIONS //************************************************************************** class m1comm_device : public device_t { public: // construction/destruction m1comm_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); // public API - stuff that gets called from the model1 // shared memory 4k // reads/writes at I/O 0xB00xxx uint8_t share_r(offs_t offset); void share_w(offs_t offset, uint8_t data); // single bit registers (74LS74) // reads/writes at I/O 0xB01000 uint8_t cn_r(); void cn_w(uint8_t data); // reads/writes at I/O 0xB01002 uint8_t fg_r(); void fg_w(uint8_t data); // IRQ logic - 5 = VINT, 7 = DLC void check_vint_irq(); void m1comm_io(address_map &map); void m1comm_mem(address_map &map); protected: // device-level overrides virtual void device_start() override; virtual void device_reset() override; virtual void device_reset_after_children() override; virtual const tiny_rom_entry *device_rom_region() const override; // optional information overrides virtual void device_add_mconfig(machine_config &config) override; private: required_device m_cpu; required_device m_dma; required_device m_dlc; // MB89374 handler DECLARE_WRITE_LINE_MEMBER(dlc_int7_w); // MB89237A handler DECLARE_WRITE_LINE_MEMBER(dma_hreq_w); uint8_t dma_mem_r(offs_t offset); void dma_mem_w(offs_t offset, uint8_t data); // single bit registers (74LS74) uint8_t syn_r(); void syn_w(uint8_t data); uint8_t zfg_r(); void zfg_w(uint8_t data); // shared memory 4k // reads/writes at 0xC000-FFFF // - share_r // - share_w uint8_t m_shared[0x1000]{}; // 2x 2k = 4k; model1 accesses this with 16bit data and 11bit address (A0 to A10) uint8_t m_syn = 0; // bit0 is used to trigger DOP line on VINT, bit1 is used to enable/disable VINT/IRQ5 uint8_t m_zfg = 0; // z80 flip gate, bit0 is stored uint8_t m_cn = 0; // bit0 is used to enable/disable the comm board uint8_t m_fg = 0; // flip gate, bit0 is stored, bit7 is connected to ZFG bit 0 #ifdef M1COMM_SIMULATION 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[0x200]{}; uint8_t m_buffer1[0x200]{}; uint8_t m_framesync; 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; 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); #endif }; // device type definition DECLARE_DEVICE_TYPE(M1COMM, m1comm_device) #endif // MAME_MACHINE_M1COMM_H