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-rw-r--r--src/devices/machine/fm_scsi.h73
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diff --git a/src/devices/machine/fm_scsi.h b/src/devices/machine/fm_scsi.h
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+// 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