RASCSI/cpp/hal/gpiobus_standard.h

//---------------------------------------------------------------------------
//
//	SCSI Target Emulator RaSCSI Reloaded
//	for Raspberry Pi
//
//	Powered by XM6 TypeG Technology.
//	Copyright (C) 2016-2020 GIMONS
//
//---------------------------------------------------------------------------

#pragma once

#include <string>

//
// RaSCSI standard (SCSI logic, standard pin assignment)
//

const std::string CONNECT_DESC = "STANDARD";	// Startup message

// Select signal control mode
const static int SIGNAL_CONTROL_MODE = 0;	// SCSI logical specification

// Control signal pin assignment (-1 means no control)
const static int PIN_ACT =		4;			// ACTIVE
const static int PIN_ENB =		5;			// ENABLE
const static int PIN_IND =		-1;			// INITIATOR CTRL DIRECTION
const static int PIN_TAD =		-1;			// TARGET CTRL DIRECTION
const static int PIN_DTD =		-1;			// DATA DIRECTION

// Control signal output logic
#define ACT_ON ON							// ACTIVE SIGNAL ON
#define ENB_ON ON							// ENABLE SIGNAL ON
#define IND_IN OFF							// INITIATOR SIGNAL INPUT
#define TAD_IN OFF							// TARGET SIGNAL INPUT
#define DTD_IN ON							// DATA SIGNAL INPUT

// SCSI signal pin assignment
const static int 	PIN_DT0 =	10;			// Data 0
const static int 	PIN_DT1	=	11;			// Data 1
const static int 	PIN_DT2	=	12;			// Data 2
const static int 	PIN_DT3	=	13;			// Data 3
const static int 	PIN_DT4	=	14;			// Data 4
const static int 	PIN_DT5	=	15;			// Data 5
const static int 	PIN_DT6	=	16;			// Data 6
const static int 	PIN_DT7	=	17;			// Data 7
const static int 	PIN_DP =	18;			// Data parity
const static int 	PIN_ATN	=	19;			// ATN
const static int 	PIN_RST	=	20;			// RST
const static int 	PIN_ACK	=	21;			// ACK
const static int 	PIN_REQ	=	22;			// REQ
const static int 	PIN_MSG	=	23;			// MSG
const static int 	PIN_CD =	24;			// CD
const static int 	PIN_IO =	25;			// IO
const static int 	PIN_BSY	=	26;			// BSY
const static int 	PIN_SEL	=	27;			// SEL