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-rw-r--r--src/devices/machine/ncr5380.h70
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diff --git a/src/devices/machine/ncr5380.h b/src/devices/machine/ncr5380.h
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-// license:BSD-3-Clause
-// copyright-holders:R. Belmont
-/*
- * ncr5380.h SCSI controller
- *
- */
-
-#ifndef MAME_MACHINE_NCR5380_H
-#define MAME_MACHINE_NCR5380_H
-
-#pragma once
-
-#include "legscsi.h"
-
-// 5380 registers
-enum
-{
- R5380_CURDATA = 0, // current SCSI data (read only)
- R5380_OUTDATA = 0, // output data (write only)
- R5380_INICOMMAND, // initiator command
- R5380_MODE, // mode
- R5380_TARGETCMD, // target command
- R5380_SELENABLE, // select enable (write only)
- R5380_BUSSTATUS = R5380_SELENABLE, // bus status (read only)
- R5380_STARTDMA, // start DMA send (write only)
- R5380_BUSANDSTAT = R5380_STARTDMA, // bus and status (read only)
- R5380_DMATARGET, // DMA target (write only)
- R5380_INPUTDATA = R5380_DMATARGET, // input data (read only)
- R5380_DMAINIRECV, // DMA initiator receive (write only)
- R5380_RESETPARITY = R5380_DMAINIRECV // reset parity/interrupt (read only)
-};
-
-// special Mac Plus registers - they implemented it weird
-#define R5380_OUTDATA_DTACK (R5380_OUTDATA | 0x10)
-#define R5380_CURDATA_DTACK (R5380_CURDATA | 0x10)
-
-// device stuff
-
-
-class ncr5380_device : public legacy_scsi_host_adapter
-{
-public:
- // construction/destruction
- ncr5380_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
-
- auto irq_callback() { return m_irq_cb.bind(); }
-
- // our API
- uint8_t ncr5380_read_reg(uint32_t offset);
- void ncr5380_write_reg(uint32_t offset, uint8_t data);
-
-protected:
- // device-level overrides
- virtual void device_start() override;
- virtual void device_reset() override;
- virtual void device_stop() override;
-
-private:
- uint8_t m_5380_Registers[8];
- uint8_t m_last_id;
- uint8_t m_5380_Command[32];
- int32_t m_cmd_ptr, m_d_ptr, m_d_limit, m_next_req_flag;
- uint8_t m_5380_Data[512];
- devcb_write_line m_irq_cb; /* irq callback */
-};
-
-// device type definition
-DECLARE_DEVICE_TYPE(NCR5380, ncr5380_device)
-
-#endif // MAME_MACHINE_NCR5380_H