// license:BSD-3-Clause // copyright-holders:F. Ulivi /********************************************************************* 1ma6.h HP-85 tape controller (1MA6-0001) *********************************************************************/ #ifndef MAME_MACHINE_1MA6_H #define MAME_MACHINE_1MA6_H #pragma once #include "formats/hti_tape.h" #include "machine/hp_dc100_tape.h" class hp_1ma6_device : public device_t { public: // construction/destruction hp_1ma6_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock); // Register read/write void reg_w(offs_t offset, uint8_t data); uint8_t reg_r(offs_t offset); DECLARE_WRITE_LINE_MEMBER(cart_out_w); DECLARE_WRITE_LINE_MEMBER(hole_w); DECLARE_WRITE_LINE_MEMBER(tacho_tick_w); DECLARE_WRITE_LINE_MEMBER(motion_w); DECLARE_WRITE_LINE_MEMBER(rd_bit_w); DECLARE_READ_LINE_MEMBER(wr_bit_r); protected: // device-level overrides virtual void device_add_mconfig(machine_config &config) override; virtual void device_start() override; virtual void device_reset() override; private: required_device m_tape; // Registers uint8_t m_data_reg; uint8_t m_status_reg; uint8_t m_control_reg; // Reading & writing unsigned m_bit_idx; uint8_t m_data_sr; // Command FSM state typedef enum { CMD_IDLE, CMD_STOPPING, CMD_STARTING, CMD_RD_WAIT_SYNC, CMD_RD, CMD_WR_WAIT_SYNC, CMD_WR_PREAMBLE, CMD_WR, CMD_WR_GAP, CMD_FAST_FWD_REV } cmd_state_t; cmd_state_t m_cmd_state; void clear_state(); void load_wr_word(); void start_cmd_exec(uint8_t new_ctl_reg); }; // device type definition DECLARE_DEVICE_TYPE(HP_1MA6, hp_1ma6_device) #endif /* MAME_MACHINE_1MA6_H */