0011000000000000*0000100011110110
时间: 2024-06-19 11:01:11 浏览: 6
0011000000000000 * 0000100011110110 是两个二进制数的乘法运算。在二进制中,每个位代表的是2的幂次,从右向左依次是2^0, 2^1, 2^2, ...。进行乘法时,你需要逐位相乘并将结果相加,然后考虑进位。
让我们分解这个过程:
- 0011(十六进制的14) * 0000(十六进制的0)= 00000(二进制)
- 0000(十六进制的0) * 1000(十六进制的8)= 00000(二进制,但没有高位的1,因为是0乘以任何数都是0)
- 0011 * 1111 = 10011(二进制,这是42的十进制等值)
- 0000 * 0110 = 0000(二进制)
所以,结果将包括上面这些部分的组合。最终结果可能是很长的二进制序列,但我们可以简化为:
00000000000000000000000000000100011110110
相关问题
CMP指令的微程序方框图和微指令
CMP指令是一种CPU指令,用于比较两个操作数的大小。微程序方框图和微指令是实现CPU指令的底层实现细节,因此需要具备一定的计算机组成原理和微程序设计的知识。以下是一些可能的微程序方框图和微指令示例:
微程序方框图:
```
+-----+
| CMP |
+-----+
|
|
+--------------+ |
| Control Unit |<-+
+--------------+
|
|
v
+--------------+
| Microprogram |
+--------------+
|
|
v
+--------------+
| Microinstructions |
+--------------+
```
微指令示例:
```
微指令地址: 微指令内容:
00000001 0000000000000001 (MAR <- PC)
00000010 0010000000000000 (IR <- M[MAR])
00000011 0000000000000001 (PC <- PC + 1)
00000100 0001000000000000 (AC <- M[IR])
00000101 0000000000000010 (MAR <- PC)
00000110 0010000000000000 (IR <- M[MAR])
00000111 0000000000000011 (PC <- PC + 1)
00001000 0011000000000000 (B <- M[IR])
00001001 0010100000000000 (D <- AC - B)
00001010 1000000000000000 (HLT)
```
请注意,这只是一个示例,实际的微程序方框图和微指令可能会因CPU的具体实现而有所不同。
1. Write a LC-3 subroutine for printing “Hello” for N times. Write a main program to input N from the keyboard, call the subroutine and then output “Hello” for N times. (20 points) 2. 1) Construct the symbol table for the following LC-3 assembly language program. (10 points) 2) Assemble it into binary machine code line by line by hand. (30 points) 4. What is an operating system? List at least three functions of an operating system. (20 points)
1. LC-3 subroutine for printing "Hello" for N times:
```
PrintHello:
ADD R2, R0, #0 ; R2 = 0
ADD R3, R0, #-6 ; R3 = -6 (ASCII code for 'H')
Loop:
BRz EndLoop ; if N = 0, exit loop
PUTc ; print character stored in R3
ADD R2, R2, #1 ; increment counter
ADD R4, R2, #-N ; R4 = N - counter
BRp Loop ; if R4 >= 0, continue loop
EndLoop:
RET ; return from subroutine
```
Main program to input N from the keyboard, call the subroutine, and output "Hello" for N times:
```
.ORIG x3000
; Prompt user to input N
LEA R0, Prompt
PUTs
; Read in N
GETc
OUT
IN
ADD R1, R0, #-10 ; convert ASCII code to decimal digit
ADD R2, R0, #0 ; store N in R2
; Call subroutine to print "Hello" for N times
JSR PrintHello
; Output newline character
PUTc
ADD R0, R0, #10
OUT
; Halt program
HALT
Prompt: .STRINGZ "Enter the value of N: "
.END
```
2. Symbol table:
| Symbol | Value |
|--------|-------|
| START | x3000 |
| COUNT | x3001 |
| RESULT | x3002 |
| LOOP | x3003 |
| | |
| ADD | x1000 |
| AND | x5000 |
| BRz | x0800 |
| JMP | xC000 |
| JSR | x4800 |
| LD | x2000 |
| LDI | xA000 |
| LDR | x6000 |
| LEA | xE000 |
| NOT | x903F |
| ST | x3000 |
| STI | xB000 |
| STR | x7000 |
2. Binary machine code:
| Instruction | Address | Binary Code |
|-------------|---------|-------------|
| .ORIG x3000 | | 0011000000000000 |
| START | x3000 | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| | | |
| .END | | 0000000000000000 |
3. An operating system is a software program that manages computer hardware and software resources and provides common services for computer programs. Three functions of an operating system are:
- Resource management: An operating system manages hardware resources such as CPU, memory, and disk space, allocating them to different applications and ensuring that they are used efficiently.
- Process management: An operating system creates and manages processes, which are instances of running programs, and switches between them to give the illusion of multitasking.
- User interface: An operating system provides a user interface that allows users to interact with the computer, such as a graphical user interface or a command line interface.
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