原码小数除法（复杂模型机实现）的报告要求只要机器码，注释和汇编都不要。原始文件内容如下：
$P 00 AA 00; IN R2,00H; 从IN单元读入一个被除数
$P 02 A9 00; IN R1,00H; 从IN单元读入一个除数
$P 04 D2 9F; ST R2,9F; R2->9F
$P 06 24; MOV R0,R1;
$P 07 96; XOR R0,R2;
$P 08 BA 10; MOV R2,10H;
$P 0A 38; AND R0,R2; 得到符号位
$P 0B D0 9A; ST R0,9A; 将符号位保存至内存单元
$P 0D C2 9F; LD R2,9F;
$P 0F B8 00; MOV R0,00H; 商置零
$P 11 BB 0F; MOV R3,OFH; 0F->R3
$P 13 3D; AND R1,R3; 求出Y*补码在R1中
$P 14 3E; AND R2,R3; 被除数求绝对值X*补在R2中
$P 15 D2 9B; ST R2,9B;
$P 17 16; SUB R2,R1; 判断是否溢出
$P 18 BB 10; MOV R3,10H;
$P 1A 3E; AND R2,R3;
$P 1B F2 04; JNZ START; 若无溢出则开始执行,即不等于0跳转
$P 1D BB FF; MOV R3,FFH; 若等于0则溢出则输出FF
$P 1F AF 00; OUT 00H,R3;
$P 21 C2 9B;START:LD R2,9B;
$P 23 16; SUB R2,R1; 被除数减Y*补得余数
$P 24 BB 05; MOV R3,05H; 将R3次数置为5
$P 26 87; START1:DEC R3;
$P 27 A4; PUSH R0;
$P 28 A5; PUSH R1;
$P 29 2D; MOV R1,R3;
$P 2A B8 0F; MOV R0,0FH;
$P 2C 33; AND R1,R0; 判断次数是否为零
$P 2D A1; POP R1;
$P 2E A0; POP R0;
$P 2F F3 15; JZ START2; 若为0跳转置
$P 31 A5; PUSH R1;
$P 32 A4; PUSH R0;
$P 33 B8 10; MOV R0,10H;
$P 35 29; MOV R1,R2;
$P 36 31; AND R1,R0; 判断余数R2的正负
$P 37 A0; POP R0;
$P 38 A1; POP R1;
$P 39 F3 05; JZ START3; 余数为正则跳置START3,
$P 3B 8C; SHL R0; 上商0，商左移1位
$P 3C 8E; SHL R2; 余数左移1位
$P 3D 06; ADD R2,R1; 余数加上Y*补
$P 3E E7 26; JMP START1; 跳到START1，次数减1
$P 40 80; START3:INC R0; 若余数为正数上商1
$P 41 8C; SHL R0; 商左移一位
$P 42 8E; SHL R2; 余数左移1位
$P 43 16; SUB R2,R1; 余数减去Y*补
$P 44 E7 26; JMP START1; 跳到START1，次数减1
$P 46 BB 10;START2:MOV R3,10H;
$P 48 29; MOV R1,R2;
$P 49 3D; AND R1,R3; 判断最后一次余数符号位正负
$P 4A F3 02; JZ START4; 跳到START4(若为正则跳）若为负数,即上商0
$P 4C E7 4F; JMP START5; 跳到START5
$P 4E 80;START4:INC R0; 为正数上商1
$P 4F C3 9A;START5:LD R3,9A;
$P 51 B9 0F; MOV R1,0FH;
$P 53 34; AND R0,R1;
$P 54 0C; ADD R0,R3; 得到带符号商
$P 55 AC 00; OUT OOH,R0; 将R0输出
$P 57 FF; HALT;
$uM 00 6F0ED001 ;取指(MEM[PC]->IR),PC+1
$uM 04 5F0ED005 ;T2:MEM[PC]->B, T3:PC+1
$uM 05 3EA2F800 ;T1:PC->A, T3:A+B->PC
$uM 06 7F0ED000 ;T3:PC+1
$uM 08 184AF800
$uM 09 184AF900 ;ADD Rdi,Ri T1:Rdi->A T2:Ri->B T3:A+B->Rdi
$uM 0A 7D4AF000 ;MOV Rdi,Ri T2、T3:Ri->iDBus T3:iDBus->Rdi
$uM 0B 184AF200 ;AND Rdi,Ri
$uM 0C 184AF100
$uM 0D 184AF500 ;AND Rdi,Ri
$uM 0E 190AF900
$uM 0F 190AF200
$uM 10 774BD011
$uM 11 3A6AFA00
$uM 12 3A6AFB13
$uM 13 750BB000;CMP Rdi,Ri T1:Rdi->A T2:Ri->B T3:影响的标志位->PSW
$uM 14 7FCED015 ;T3:MEM[PC]->MAR, PC+1
$uM 15 7F49C000 ;T2:IO[[MAR]->Rdi
$uM 16 7FCED017 ;T3:MEM[PC]->MAR, PC+1
$uM 17 7D09A000
$uM 18 7DCAF019
$uM 19 7F89D000
$uM 1A 3A6AFB1B
$uM 1B 7703B01C
$uM 1C 7DCAF01D
$uM 1D 7F89D000 ;T2:Ri->IO[MAR]
$uM 1E 7F4ED000 ;T3:MEM[PC]->Rdi, PC+1
$uM 20 7FCED021 ;T3:MEM[PC]->MAR, PC+1
$uM 21 7F49D000
$uM 22 7DCAF023
$uM 23 7F49D000 ;T3:MEM[MAR]->Rdi
$uM 24 1AEED825 ;T1:Rdi->A, T2:MEM[PC]->B T3:A+B->MAR
$uM 25 7F49D000 ;T3:MEM[MAR]->Rdi
$uM 28 7FCED029 ;T3:MEM[PC]->MAR, PC+1
$uM 29 7D09B000
$uM 2A 3ACAF02B
$uM 2B 7D09B000
$uM 2C 1AEED82D
$uM 2D 7D09B000
$uM 30 3A4AFA00 ;T2:Ri->MEM[MAR]
$uM 31 3A4AFB00 ;T1:Rdi->A T3:A-1->Rdi
$uM 32 184AF300
$uM 33 3A4AF700
$uM 34 3A4AF600
$uM 35 184AF300
$uM 36 185AF800
$uM 37 185AF900
$uM 38 7F0AF000
$uM 39 7F0AF000
$uM 3A 7F0AF000
$uM 3B 7F0AFD00
$uM 3C 7F1AFD00
$uM 3D 7F0AFC00
$uM 3E 7F1AFC00
$uM 3F 7F0AF03F
$uM 40 3A6AFB41
$uM 41 5F0ED064
$uM 42 570BD043
$uM 43 7FCED062
$uM 44 774BD045
$uM 45 3A6AFA46;T1:Rdi->A T2:Ri->B T3: A xor B ->Rdi
$uM 46 778BD047 ;T3:MEM[SP]->PC //RET
$uM 47 3A6AFA00
$uM 48 3A6AFB49
$uM 49 750BB000
$uM 4A 774BD04B
$uM 4B 3A6AFA00 ;SP+1
$uM 4E 7F8AD000 ;T3:MEM[PC]->PC
$uM 50 3A6AFB51 ;SP -1,不允许改变标志位 //CALL data
$uM 51 5F0ED060
$uM 52 3ACAF053
$uM 53 7F49C000
$uM 54 3ACAF055
$uM 55 7D09A000 ;T2:MEM[PC]->B, T3:PC+1
$uM 60 7703B061 ;T2:PC->MEM[SP]
$uM 61 7E9AF000
$uM 62 7E19B063
$uM 63 3A6AFA00
$uM 64 761BB000 ;T3:B->PC$P 00 AA 00
$P 02 A9 00
$P 04 D2 9F
$P 06 24
$P 07 96
$P 08 BA 10
$P 0A 38
$P 0B D0 9A
$P 0D C2 9F
$P 0F B8 00
$P 11 BB 0F
$P 13 3D
$P 14 3E
$P 15 D2 9B
$P 17 16
$P 18 BB 10
$P 1A 3E
$P 1B F2 04
$P 1D BB FF
$P 1F AF 00
$P 21 C2 9B
$P 23 16
$P 24 BB 05
$P 26 87
$P 27 A4
$P 28 A5
$P 29 2D
$P 2A B8 0F
$P 2C 33
$P 2D A1
$P 2E A0
$P 2F F3 15
$P 31 A5
$P 32 A4
$P 33 B8 10
$P 35 29
$P 36 31
$P 37 A0
$P 38 A1
$P 39 F3 05
$P 3B 8C
$P 3C 8E
$P 3D 06
$P 3E E7 26
$P 40 80
$P 41 8C
$P 42 8E
$P 43 16
$P 44 E7 26
$P 46 BB 10
$P 48 29
$P 49 3D
$P 4A F3 02
$P 4C E7 4F
$P 4E 80
$P 4F C3 9A
$P 51 B9 0F
$P 53 34
$P 54 0C
$P 55 AC 00
$P 57 FF
java代码如下：
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
/*
* 2017/07/09
* 主要针对计算机组成原理课设中机器码后面的汇编注释进行清除，只保留机器码
*/
public class StringPractice {
public static void main(String[] args) throws IOException,FileNotFoundException{
// TODO Auto-generated method stub
File file1 = new File("D:/JAVA/Demo/in.txt");
File file2 = new File("D:/JAVA/Demo/out.txt");
BufferedReader bReader;
PrintWriter pWriter;
String string;
String[] aStrings = new String[10];
bReader = new BufferedReader(new FileReader(file1));
pWriter = new PrintWriter(new BufferedWriter(new FileWriter(file2)));
while((string = bReader.readLine())!=null){
aStrings = string.split(";");
if(aStrings[0].length()==0)//判断是否遇到空行
break;
//System.out.println(aStrings[0].length());
//System.out.println(aStrings[0].charAt(1));
pWriter.println(aStrings[0]);//写入首个字符串
}
bReader.close();
pWriter.flush();
pWriter.close();
}
}