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-rw-r--r--src/mame/video/dc.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/src/mame/video/dc.c b/src/mame/video/dc.c
index aa835d5e0c1..6dacc76d011 100644
--- a/src/mame/video/dc.c
+++ b/src/mame/video/dc.c
@@ -2668,12 +2668,12 @@ READ64_HANDLER( pvr2_ta_r )
WRITE64_HANDLER( pvr2_ta_w )
{
-// int reg;
-// UINT64 shift;
-// UINT32 dat;
+// int reg;
+// UINT64 shift;
+// UINT32 dat;
-// reg = decode_reg_64(offset, mem_mask, &shift);
-// dat = (UINT32)(data >> shift);
+// reg = decode_reg_64(offset, mem_mask, &shift);
+// dat = (UINT32)(data >> shift);
//printf("PVR2 %08x %08x\n",reg,dat);
}
'>99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178
// license:BSD-3-Clause
// copyright-holders:Philip Bennett
/*********************************************************************

    53c7xx.h

    NCR 53C700 SCSI I/O Processor

*********************************************************************/

#ifndef MAME_MACHINE_53C7XX_H
#define MAME_MACHINE_53C7XX_H

#pragma once

#include "machine/nscsi_bus.h"


class ncr53c7xx_device : public nscsi_device, public nscsi_slot_card_interface, public device_execute_interface
{
public:
	// construction/destruction
	ncr53c7xx_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);

	// static configuration helpers
	auto irq_handler() { return m_irq_handler.bind(); }
	auto host_write() { return m_host_write.bind(); }
	auto host_read() { return m_host_read.bind(); }

	// our API
	DECLARE_READ32_MEMBER(read);
	DECLARE_WRITE32_MEMBER(write);

protected:
	// device-level overrides
	virtual void device_start() override;
	virtual void device_reset() override;
	virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
	virtual void execute_run() override;

	int m_icount;

private:

	enum
	{
		STATE_MASK = 0x00ff,
		SUB_SHIFT  = 8,
		SUB_MASK   = 0xff00
	};

	enum
	{
		MODE_I,
		MODE_T,
		MODE_D
	};

	enum scsi_state
	{
		IDLE,
		FINISHED,
		ARBITRATE_WAIT_FREE,
		ARBITRATE_CHECK_FREE,
		ARBITRATE_EXAMINE_BUS,
		ARBITRATE_SELECT_DEST,
		ARBITRATE_ASSERT_SEL,
		ARBITRATE_RELEASE_BSY,
		ARBITRATE_DESKEW_WAIT,
		SELECT,
		SELECT_COMPLETE,
		INIT_XFER,
		INIT_XFER_WAIT_REQ,
		INIT_XFER_SEND_BYTE,
		INIT_XFER_RECV_PAD,
		INIT_XFER_RECV_BYTE_ACK,
		INIT_XFER_RECV_BYTE_NACK,
		SEND_WAIT_REQ_0,
		SEND_WAIT_SETTLE,
		RECV_WAIT_SETTLE,
		RECV_WAIT_REQ_0,
		RECV_WAIT_REQ_1
	};

	void update_irqs();
	void set_scsi_state(int state);
	void delay(const attotime &delay);
	void scsi_ctrl_changed() override;
	void send_byte();
	void recv_byte();
	void step(bool timeout);


	enum scripts_state
	{
		SCRIPTS_IDLE,
		SCRIPTS_WAIT_MANUAL_START,
		SCRIPTS_FETCH,
		SCRIPTS_EXECUTE
	};

	void set_scripts_state(scripts_state state);
	void scripts_yield();
	void scripts_decode_bm(void);
	void scripts_decode_io(void);
	void scripts_decode_tc(void);
	void bm_t_move();
	void bm_i_move();
	void bm_i_wmov();
	void io_t_reselect();
	void io_t_disconnect();
	void io_t_waitselect();
	void io_t_set();
	void io_t_clear();
	void io_i_select();
	void io_i_waitdisconnect();
	void io_i_waitreselect();
	void io_i_set();
	void io_i_clear();
	void tc_jump();
	void tc_call();
	void tc_return();
	void tc_int();
	void illegal();
	const char* disassemble_scripts();


	// SCSI registers
	uint8_t   m_scntl[2];
	uint8_t   m_sdid;
	uint8_t   m_sien;
	uint8_t   m_scid;
	uint8_t   m_sxfer;
	uint8_t   m_sodl;
	uint8_t   m_socl;
	uint8_t   m_sfbr;
	uint8_t   m_sidl;
	uint8_t   m_sbdl;
	uint8_t   m_sbcl;
	uint8_t   m_dstat;
	uint8_t   m_sstat[3];
	uint8_t   m_ctest[8];
	uint32_t  m_temp;
	uint8_t   m_dfifo;
	uint8_t   m_istat;
	uint32_t  m_dbc;
	uint8_t   m_dcmd;
	uint32_t  m_dnad;
	uint32_t  m_dsp;
	uint32_t  m_dsps;
	uint8_t   m_dmode;
	uint8_t   m_dien;
	uint8_t   m_dwt;
	uint8_t   m_dcntl;


	// other state
	int     m_scsi_state;
	bool    m_connected;
	bool    m_finished;
	uint8_t   m_last_data;
	uint32_t  m_xfr_phase;
	emu_timer *m_tm;

	int     m_scripts_state;
	//int     m_scripts_substate;
	void    (ncr53c7xx_device::*m_scripts_op)();

	// callbacks
	devcb_write_line m_irq_handler;
	devcb_write32 m_host_write;
	devcb_read32 m_host_read;
};

// device type definition
DECLARE_DEVICE_TYPE(NCR53C7XX, ncr53c7xx_device)

#endif // MAME_MACHINE_53C7XX_H