Objective Data Memory Map Learn the basic structure of an assembly program, how to read the 8-bit instruction set reference and Address Offset Data Ob00001000 Ob10010011 |Ob00000101 become familiar with a few commands. 1. Lab 4 Task 1: Walk through the assembly program below and fill out the data memory map (right). If a value changes during the program, you only need to 7 record the final value. Unless otherwise stated all 8. memory locations contain a value of 0. 10 11 12 :Program for task 1 :Definitions .EQU myData=0x21 .DEF config=R4 13 14 15 Ob10100101 Ob10111001 16 17 :Main 18 .CSEG 19 .ORG Ox0000 20 LDI R16, Ob00001000 21 MOV RO, R16 LDI R16, Ob10010011 22 23 MOV R1, R16 24 LDI R16, Ob01010101 ANDI R16, Ob00001111 MOV R2, R16 25 26 ORI R16, Ob10100101 27 LDI R17, 20 28 ADD R17, R16 29 MOV R3, R16 30 31 MOV config. R17 OUT O, R3 CBI 0,1 32 33 IN R5, 0 34 STS myData, RO SBI 1, 6 SBI 1,7 LDS R6, myData 35 3 36 4 37 38

CPUs use values to access memory locations, and certain registers may be used to store instruction and data addresses. With the help of the above statement, please list all of the registers used in the aforementioned processes.

Which of the following steps must be completed for a computer program to be constructed and executed? None of the other choices. All of the other choices (except "None of the other choices") A computer program is loaded from storage device into RAM and the CPU "jumps to" (begins executing) the first instruction A computer program is written in a high-level language and saved as a plain-text file. A computer program is combined with (a.k.a. linked) with other previously written and compiled code the program depends on, called libraries A computer program is compiled into machine instructions in binary code

When a computer needs a piece of information, does it immediately perform the memory fetch operation? If not, what does it do?

The distinction between internal and external memory should be mentioned.

Describe the role of flags in ALU instructions, including the zero flag, carry flag, and overflow flag.

Assign the location in the memory, find the object code for the instructions then create the object program

When creating instructions that access variables, why is it not a good idea to use numeric addresses?

This procedure counts the amount of CPU instructions required by each statement in the source code.

Discuss the role of flags or condition codes in ALU instructions and how they affect program flow.

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The very last instruction in a subroutine or service routine that allows you to exit the subroutine is RET JSR JSRR BRANCH

201. Program execution services use to a. Control Program b. Delete Program c. Execute Program d. Update Programs