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Diffstat (limited to 'src/devices/machine/fm_scsi.h')
-rw-r--r-- | src/devices/machine/fm_scsi.h | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/src/devices/machine/fm_scsi.h b/src/devices/machine/fm_scsi.h new file mode 100644 index 00000000000..359d7a6381d --- /dev/null +++ b/src/devices/machine/fm_scsi.h @@ -0,0 +1,73 @@ +// license:BSD-3-Clause +// copyright-holders:Barry Rodewald +/* + * fm_scsi.h + * + * SCSI controller used in Fujitsu FMR-50, FMR-60, and FM-Towns + * + */ + +#ifndef MAME_MACHINE_FM_SCSI_H +#define MAME_MACHINE_FM_SCSI_H + +#include "machine/legscsi.h" + + +class fmscsi_device : public legacy_scsi_host_adapter +{ +public: + // construction/destruction + fmscsi_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); + + // configuration helpers + auto irq_handler() { return m_irq_handler.bind(); } + auto drq_handler() { return m_drq_handler.bind(); } + + // any publically accessible interfaces needed for runtime + uint8_t fmscsi_data_r(void); + void fmscsi_data_w(uint8_t data); + uint8_t fmscsi_status_r(void); + void fmscsi_control_w(uint8_t data); + uint8_t fmscsi_r(offs_t offset); + void fmscsi_w(offs_t offset, uint8_t data); + + TIMER_CALLBACK_MEMBER(set_phase); + int get_phase(void); + void set_input_line(uint8_t line, uint8_t state); + uint8_t get_input_line(uint8_t line); + void set_output_line(uint8_t line, uint8_t state); + uint8_t get_output_line(uint8_t line); + +protected: + // device-level overrides (none are required, but these are common) + virtual void device_start() override ATTR_COLD; + virtual void device_reset() override ATTR_COLD; + + TIMER_CALLBACK_MEMBER(update_transfer); + +private: + int get_scsi_cmd_len(uint8_t cbyte); + void stop_transfer(); + + devcb_write_line m_irq_handler; + devcb_write_line m_drq_handler; + + uint8_t m_command[32]; + //uint8_t m_result[32]; + uint8_t m_command_index; + int m_result_length; + uint32_t m_result_index; + uint8_t m_input_lines; + uint8_t m_output_lines; + uint8_t m_data; + uint8_t m_last_id; + uint8_t m_phase; + uint8_t m_target; + uint8_t m_buffer[512]; + emu_timer* m_transfer_timer; + emu_timer* m_phase_timer; +}; + +DECLARE_DEVICE_TYPE(FMSCSI, fmscsi_device) + +#endif // MAME_MACHINE_FM_SCSI_H |