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// 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<hp_dc100_tape_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 */
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