mips.h

国外开源的一个片上网络系统的源代码

/*
 *  TU Eindhoven
 *  Eindhoven, The Netherlands
 *
 *  Name            :   mips.h
 *
 *  Author          :   Sander Stuijk ([e-mail])
 *
 *  Date            :   July 23, 2002
 *
 *  Function        :   MIPS
 *
 *  History         :
 *      23-07-02    :   Initial version.
 *      13-12-02    :   Synthesizable version [e-mail]
 *
 */
 
#ifndef MIPS_H_INCLUDED
#define MIPS_H_INCLUDED

#include "systemc.h"

// Memory sizes
#define	RAMSIZE			16384	// Size (in bytes) of RAM
#define ROMSIZE			16384	// Size (in bytes) of ROM
#define REGSIZE			32		// Size (in words) of registerfile

// Endianess
#define MIPS_BIG_ENDIAN				// Big-endian endianess used

// Module settings
#define SIGNEXTENDBIT	16		// Half of dataword size
#define SHIFTBIT		2		// Nr position word shifted in shifter

// Width (in bits) of various operands
#define DWORD			32		// Dataword size
#define AWORD			32		// Address word size
#define AWORDREG		5		// Address word size of registerfile
#define W_IMMEDIATE     16      // Immediate size

#define W_ALUCTRL		6		// ALU control code
#define W_ALUOP			5		// ALU operation code
#define W_ALUSRC		1		// Select 'b' input of ALU 
#define W_BRANCHFLAG	1		// Flag for branching
#define W_BRANCHOP		2		// Branch controller operation code
#define W_FUNCCODE		6		// Function code (instr[5,0])
#define W_HAZARDFLAG	1		// Flag for hazard
#define W_IFIDWRITEFLAG	1		// Update IF/ID registers flag
#define W_MEMREAD		2		// Read data from memory
#define W_MEMTOREG		2		// Write memory output to register 
#define W_MEMWRITE		2		// Write data to memory
#define W_OPCODE		6		// Operation code (instr[31,26])
#define W_PCWRITEFLAG	1		// Update program counter flag
#define	W_REGDST		2		// Select address destination register
#define W_REGVAL		1		// Select value destination register
#define W_REGWRITE		1		// Write to register
#define W_SHAMT			5		// Shift amount
#define W_SIGNEXTEND    1       // Sign extend immediate value
#define W_TARGET		2		// Select branch target address

#define clog cout
#endif