// license:BSD-3-Clause // copyright-holders:Ariane Fugmann #pragma once #ifndef __M1COMM_H__ #define __M1COMM_H__ #define __M1COMM_SIMULATION__ #include "cpu/z80/z80.h" #define MCFG_M1COMM_ADD(_tag ) \ MCFG_DEVICE_ADD(_tag, M1COMM, 0) //************************************************************************** // 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); // optional information overrides virtual machine_config_constructor device_mconfig_additions() const override; required_device m_commcpu; // internal API - stuff that happens on the comm board // MB89374 registers DECLARE_READ8_MEMBER(dlc_reg_r); DECLARE_WRITE8_MEMBER(dlc_reg_w); // MB89237A registers DECLARE_READ8_MEMBER(dma_reg_r); DECLARE_WRITE8_MEMBER(dma_reg_w); // single bit registers (74LS74) DECLARE_READ8_MEMBER(syn_r); DECLARE_WRITE8_MEMBER(syn_w); DECLARE_READ8_MEMBER(zfg_r); DECLARE_WRITE8_MEMBER(zfg_w); // shared memory 4k DECLARE_READ8_MEMBER(share_r); DECLARE_WRITE8_MEMBER(share_w); // public API - stuff that gets called from the model1 // shared memory 4k // reads/writes at I/O 0xB00xxx // - share_r // - share_w // single bit registers (74LS74) // reads/writes at I/O 0xB01000 DECLARE_READ8_MEMBER(cn_r); DECLARE_WRITE8_MEMBER(cn_w); // reads/writes at I/O 0xB01002 DECLARE_READ8_MEMBER(fg_r); DECLARE_WRITE8_MEMBER(fg_w); // IRQ logic - 5 = VINT, 7 = DLC void check_vint_irq(); protected: // device-level overrides virtual void device_start() override; virtual void device_reset() override; virtual const tiny_rom_entry *device_rom_region() const override; private: uint8_t m_shared[0x1000]; // 2x 2k = 4k; model1 accesses this with 16bit data and 11bit address (A0 to A10) uint8_t m_dlc_reg[0x20]; // MB89374 registers uint8_t m_dma_reg[0x20]; // MB89237A registers uint8_t m_syn; // bit0 is stored; purpose unknown, bit1 is used to enable/disable VINT/IRQ5 uint8_t m_zfg; // z80 flip gate? purpose unknown, bit0 is stored uint8_t m_cn; // bit0 is used to enable/disable the comm board uint8_t 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_t m_buffer[0x1000]; #ifdef __M1COMM_SIMULATION__ uint8_t m_linkenable; uint16_t m_linktimer; uint8_t m_linkalive; uint8_t m_linkid; uint8_t m_linkcount; void comm_tick(); #endif }; // device type definition extern const device_type M1COMM; #endif /* __M1COMM_H__ */