testvmpu.java

一个微处理器的模似器

package com.vmpu.test;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

import com.vmpu.core.MicroProcessingUnit;

public class TestVMPU {

	/**
	 * @param args
	 * @throws IOException 
	 * @throws InterruptedException 
	 */
	@SuppressWarnings("static-access")
	public static void main(String[] args) throws IOException, InterruptedException {
		MicroProcessingUnit mpu = new MicroProcessingUnit(2000);
		String rom = "test.rom";
		makeRom(rom);
		mpu.load(rom);
		mpu.start();		
		Thread.currentThread().sleep(5000);
		System.in.read();
	}
	
	/**
	 * 生成一个可执行文件
	 * 计算1+2+……+100=？
	 * 汇编语言如下：
	 * 				MVRD R0,1
	 *				MVRD R1,0
	 *				MVRD R2,100
	 * continue:
	 * 				ADD R1,R0
	 * 				INC R0
	 * 				DEC R2
	 * 				JNZ continue
	 * 对应的机器码如下：
	 * opcode DR SR imm
	 * 0111   00      00 0000 0001 ;0x7001,adr=0
	 * 0111   01      00 0000 0000 ;0x7400,adr=2
	 * 0111   10      00 0110 0100 ;0x7864,adr=4
	 * 1000   01 00      0000 0000 ;0x8400,adr=6(continue)
	 * 1001   00      00 0000 0001 ;0x9001,adr=8
	 * 1011   10      00 0000 0001 ;0xB801,adr=10
	 * 0110         0000 0000 0110 ;0x6006,adr=12
	 * 
	 * @param rom
	 * @throws IOException 
	 */
	public static void makeRom(String rom) throws IOException {
		int codeLen = 7 * 2;//代码段长度
		int dataLen = 0;//数据段长度
		OutputStream out = new FileOutputStream(rom);
		out.write(codeLen >>> 8);//代码段长度的高8位
		out.write(codeLen);//代码段长度的低8位
		out.write(dataLen >>> 8);//数据段的高8位
		out.write(dataLen);//数据段的低8位
		
		//代码段
		out.write(0x70);
		out.write(0x01);
		
		out.write(0x74);
		out.write(0x00);
		
		out.write(0x78);
		out.write(0x64);
		
		out.write(0x84);
		out.write(0x00);
		
		out.write(0x90);
		out.write(0x01);
		
		out.write(0xB8);
		out.write(0x01);
		
		out.write(0x60);
		out.write(0x06);
	}

}