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Write a PEP/8 machine language simulator that simulates the PEP/8 computer and instruction set for only the following instructions Here are some specifics. 1. Use an array to represent the memory. 2. Use variables or arrays for the PEP8 registers. I recommend putting it all into a structure. I also recommend using an array of 16 bit values for A, X, PC, SP so that you can use the r bit from the instructions to point directly to A or X. You do NOT   have to include the Status bits. 3. Use unions of structures to break up the registers and instructions into the correct bits (for example, use a structure that can be unioned to break up the 8 bit specifier into the following bit combos (4, 1, 3), (5, 3), (7, 1), (8). This will allow you to instantly extract the instruction, register and addressing modes from each instruction. Also use a union to break up the 16 bit operand into two 8 bit values. 4. Have the instructions be inputted either through the command line or better yet, through a file, in the following format for each instruction: a. 6 Hexadecimal characters per instruction 5. After each instruction in the program is executed, output the PEP8 machine register values.

Write a PEP/8 machine language simulator that simulates the PEP/8 computer and instruction set for only the following instructions Here are some specifics. 1. Use an array to represent the memory. 2. Use variables or arrays for the PEP8 registers. I recommend putting it all into a structure. I also recommend using an array of 16 bit values for A, X, PC, SP so that you can use the r bit from the instructions to point directly to A or X. You do NOT   have to include the Status bits. 3. Use unions of structures to break up the registers and instructions into the correct bits (for example, use a structure that can be unioned to break up the 8 bit specifier into the following bit combos (4, 1, 3), (5, 3), (7, 1), (8). This will allow you to instantly extract the instruction, register and addressing modes from each instruction. Also use a union to break up the 16 bit operand into two 8 bit values. 4. Have the instructions be inputted either through the command line or better yet, through a file, in the following format for each instruction: a. 6 Hexadecimal characters per instruction 5. After each instruction in the program is executed, output the PEP8 machine register values.

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Question
Write a PEP/8 machine language simulator that simulates the PEP/8 computer
and instruction set for only the following instructions
Here are some specifics.
1.
Use an array to represent the memory.
2.
Use variables or arrays for the PEP8 registers. I recommend putting it all into a
structure. I also recommend using an array of 16 bit values for A, X, PC, SP so
that you can use the
r
bit from the instructions to point directly to A or X. You
do
NOT
 
have to include the Status bits.
3.
Use unions of structures to break up the registers and instructions into the
correct bits (for example, use a structure that can be unioned to break up the 8
bit specifier into the following bit combos (4, 1, 3), (5, 3), (7, 1), (8). This will
allow you to instantly extract the instruction, register and addressing modes
from each instruction. Also use a union to break up the 16 bit operand into two
8 bit values.
4.
Have the instructions be inputted either through the command line or better
yet, through a file, in the following format for each instruction:
a.
6 Hexadecimal characters per instruction
5.
After each instruction in the program is executed, output the PEP8 machine
register values.
Instruction Addressing Status Instruction Specifier Modes Bits 0000 0000 Stop execution NA 0001 100r Bitwise invert r NA NZ 0001 110r Arithmetic shift left r NA NZVC 0001 111r Arithmetic shift right r NA NZC 0010 000r Rotate left r NA C 0010 001r Rotate right r NA C 0011 Oaaa Decimal input trap d NZV 0011 laaa Decimal output trap d. i 0100 laaa Character input d 0101 Oaaa Character output d, i 0111 raaa Add to r d, i NZVC 1000 raaa Subtract from r d, i NZVC 1001 raaa Bitwise AND tor d, i NZ 1010 raaa Bitwise OR to r d, i NZ 1100 гaaa Load r from memory d, i NZ 1101 raaa Load byte from memory d, i NZ 1110 raaa Store r to memory d 1111 raaa Store byte r to memory d
Transcribed Image Text:Instruction Addressing Status Instruction Specifier Modes Bits 0000 0000 Stop execution NA 0001 100r Bitwise invert r NA NZ 0001 110r Arithmetic shift left r NA NZVC 0001 111r Arithmetic shift right r NA NZC 0010 000r Rotate left r NA C 0010 001r Rotate right r NA C 0011 Oaaa Decimal input trap d NZV 0011 laaa Decimal output trap d. i 0100 laaa Character input d 0101 Oaaa Character output d, i 0111 raaa Add to r d, i NZVC 1000 raaa Subtract from r d, i NZVC 1001 raaa Bitwise AND tor d, i NZ 1010 raaa Bitwise OR to r d, i NZ 1100 гaaa Load r from memory d, i NZ 1101 raaa Load byte from memory d, i NZ 1110 raaa Store r to memory d 1111 raaa Store byte r to memory d
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