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Diffstat (limited to 'src/devices/machine/hp_taco.h')
-rw-r--r--src/devices/machine/hp_taco.h105
1 files changed, 39 insertions, 66 deletions
diff --git a/src/devices/machine/hp_taco.h b/src/devices/machine/hp_taco.h
index bb20bd464d3..b052ba77a8f 100644
--- a/src/devices/machine/hp_taco.h
+++ b/src/devices/machine/hp_taco.h
@@ -14,9 +14,9 @@
#pragma once
#include "formats/hti_tape.h"
+#include "machine/hp_dc100_tape.h"
-class hp_taco_device : public device_t ,
- public device_image_interface
+class hp_taco_device : public device_t
{
public:
// construction/destruction
@@ -35,113 +35,86 @@ public:
DECLARE_READ_LINE_MEMBER(flg_r);
DECLARE_READ_LINE_MEMBER(sts_r);
- // device_image_interface overrides
- virtual image_init_result call_load() override;
- virtual image_init_result call_create(int format_type, util::option_resolution *format_options) override;
- virtual void call_unload() override;
- virtual std::string call_display() override;
- virtual iodevice_t image_type() const override { return IO_MAGTAPE; }
- virtual bool is_readable() const override { return true; }
- virtual bool is_writeable() const override { return true; }
- virtual bool is_creatable() const override { return true; }
- virtual bool must_be_loaded() const override { return false; }
- virtual bool is_reset_on_load() const override { return false; }
- virtual const char *file_extensions() const override;
+ 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:
hp_taco_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
// device-level overrides
+ virtual void device_add_mconfig(machine_config &config) override;
virtual void device_start() override;
- virtual void device_stop() override;
virtual void device_reset() override;
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
private:
+ required_device<hp_dc100_tape_device> m_tape;
+
devcb_write_line m_irq_handler;
devcb_write_line m_flg_handler;
devcb_write_line m_sts_handler;
// Registers
uint16_t m_data_reg;
- bool m_data_reg_full;
uint16_t m_cmd_reg;
uint16_t m_status_reg;
uint16_t m_tach_reg;
- hti_format_t::tape_pos_t m_tach_reg_ref;
- bool m_tach_reg_frozen;
uint16_t m_checksum_reg;
- bool m_clear_checksum_reg;
- uint16_t m_timing_reg;
+ uint16_t m_threshold_reg;
// State
bool m_irq;
bool m_flg;
bool m_sts;
+ bool m_error;
+ bool m_gap_in_read;
// Command FSM state
typedef enum {
CMD_IDLE,
- CMD_INVERTING,
CMD_PH0,
CMD_PH1,
CMD_PH2,
- CMD_END,
CMD_STOPPING
} cmd_state_t;
cmd_state_t m_cmd_state;
- // Tape position & motion
- hti_format_t::tape_pos_t m_tape_pos;
- attotime m_start_time; // Tape moving if != never
- bool m_tape_fwd;
- bool m_tape_fast;
-
// Timers
- emu_timer *m_tape_timer;
- emu_timer *m_hole_timer;
- emu_timer *m_timeout_timer;
-
- // Content of tape
- hti_format_t m_image;
- bool m_image_dirty;
+ emu_timer *m_gap_timer;
+ emu_timer *m_evd_timer;
+ emu_timer *m_error_timer;
// Reading & writing
- bool m_tape_wr;
- hti_format_t::tape_pos_t m_rw_pos;
- uint16_t m_next_word;
- hti_format_t::track_iterator_t m_rd_it;
- bool m_rd_it_valid;
-
- // Gap detection
- hti_format_t::tape_pos_t m_gap_detect_start;
+ uint16_t m_working_reg;
+ unsigned m_bit_idx;
- void clear_state(void);
+ void clear_state();
void irq_w(bool state);
- void set_error(bool state);
- bool is_braking(void) const;
- unsigned speed_to_tick_freq(void) const;
- hti_format_t::tape_pos_t current_tape_pos(void) const;
- void update_tape_pos(void);
- void update_tach_reg(void);
- void freeze_tach_reg(bool freeze);
- attotime time_to_distance(hti_format_t::tape_pos_t distance) const;
- attotime time_to_target(hti_format_t::tape_pos_t target) const;
- attotime time_to_stopping_pos(void) const;
- bool start_tape_cmd(uint16_t cmd_reg , uint16_t must_be_1 , uint16_t must_be_0);
- void stop_tape(void);
- unsigned current_track(void);
- attotime fetch_next_wr_word(void);
- attotime time_to_rd_next_word(hti_format_t::tape_pos_t& word_rd_pos);
- hti_format_t::tape_pos_t min_gap_size(void) const;
+ void sts_w(bool state);
+ void set_error(bool error , bool gap_in_read);
+ hti_format_t::tape_pos_t min_gap_size() const;
+ void set_gap_timer();
+ void set_evd_timer();
void set_tape_present(bool present);
- attotime time_to_next_hole(void) const;
- attotime time_to_tach_pulses(void) const;
- void terminate_cmd_now(void);
- void set_data_timeout(bool long_timeout);
- void cmd_fsm(void);
+ void send_go();
+ void send_stop();
+ void end_cmd();
+ void irq_and_end();
+ bool is_at_slow_speed() const;
+ void start_rd();
+ void start_wr();
+ void update_checksum(uint16_t data);
+ void cmd_fsm();
+ static uint8_t get_cmd(uint16_t cmd_reg);
+ static bool is_cmd_rd_wr(uint16_t cmd_reg);
+ static bool is_cmd_rd(uint16_t cmd_reg);
+ static bool is_cmd_wr(uint16_t cmd_reg);
+ static bool is_double_hole_cmd(uint16_t cmd_reg);
void start_cmd_exec(uint16_t new_cmd_reg);
- image_init_result internal_load(bool is_create);
};
// device type definition