Class: Assembly Language x 86 Processors
I need help reviewing the following topics:
1.) Define a bit, byte, and a nibble.
2.) Define a program, a register, Cache Memory.
3.) What is the meaning of backward compatibility?
4.) List & define x89 processor Modes
5.) What is the processor's operation (Instruction Execution) Cycle ( I am most confused on this topic)
6.) List the processor's Basic registers.
1) A bit (short for binary digit) is the smallest unit of data in a computer. A bit has a single binary value, either 0 or 1.
A nibble has 4 bits and a byte has 8 bits of storage.
2)
EAX used to be called the accumulator since it was used by a number of arithmetic operations, and ECX was known as the counter since it was used to hold a loop index.
Whereas most of the registers have lost their special purposes in the modern instruction set, by convention, two are reserved for special purposes — the stack pointer (ESP) and the base pointer (EBP).
For the EAX, EBX, ECX, and EDX registers, subsections may be used.
For example, the least significant 2 bytes of EAX can be treated as a 16-bit register called AX. The least significant byte of AX can be used as a single 8-bit register called AL, while the most significant byte of AX can be used as a single 8-bit register called AH.
When a two-byte quantity is placed into DX, the update affects the value of DH, DL, and EDX. , they are sometimes convenient when dealing with data that are smaller than 32-bits (e.g. 1-byte ASCII characters).
When referring to registers in assembly language, the names are not case-sensitive. For example, the names EAX and eax refer to the same register.
4) addressing modes
Immediate
• Direct
• Indirect
• Register
• Register Indirect
• Displacement (Indexed)
• Stack
3)backward compatible assembly languages, which provide some level of compatibility all the way back to the Intel 8008 introduced in April 1972.
Class: Assembly Language x 86 Processors I need help reviewing the following topics: 1.) Define a...
this is assembly language for x-86 processors using microsoft visual studio Create a procedure named FindThrees that returns 1 if an array has three consecutive values of 3 somewhere in the array. Otherwise, return 0. The procedure’s input parameter list contains a pointer to the array and the array’s size. Use the PROC directive with a parameter list when declaring the procedure. Preserve all registers (except EAX) that are modified by the procedure. Write a test program that calls FindThrees...
(f) and (g) please f and g please letters Question 2 Indirect addressing mode in assembly language is sanilar to pointers in C. Answer the following questions: (1 point) a) How many 8-bit registers can a FSR access in the PICI8F452 MCU? b) Write the assembly language command to load the address of the variable with name: PVal into one of the FSR? (2 points) (2 points) (2 points) c) What is the meaning of: movf PREINC2, F? d) What...
Consider the following MIPS assembly language instructions: addi $1, $2, 100 swr $1, 0($2): addi $rt, $rs, immediate # add immediate swr $rt, immedi ate ($rs) # store word write register These instructions are I-format instructions similar to the load word and store word instructions. The addi and swr instructions store a computed value to the destina- tion register $rt. The instructions do not require any physical hardware changes to the datapath. The effect of each instruction is given below....
5 Exercises Now that everything is working you can try the following exercises. To complete them you will need to refer to the documentation in Appendix A- The MiteASM Assembler and Appendix B - The MiteFPGA Processor. Write an assembly language program for an over counter for a cricket umpire. This should display a count on the 7-segment display. The count should increase by 1 when button 0 is 1. pressed. It should reset to 0 when button 1 is...
There is an example below Now that everything is working you can try the following exercises. To complete them you will need to refer to the documentation in Appendix A The MiteASM Assembler and Appendix B The MiteFPGA Processor. Write an assembly language program for an over counter for a cricket umpire. This should 1. display a count on the 7-segment display. The count should increase by 1 when button 0 is pressed. It should reset to 0 when button...