Assembly Language For X86 Processors 7th Edition Kip Irvine - Solutions

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17. In the No_reset program, what key combination will actually boot the computer?
16. Which MS-DOS function terminates a program and leaves part of the program resident in memory?
15. If a memory-resident program replaces one of the interrupt vectors, how can it still take advantage of some functions in the interrupt’s existing handler?
14. How can a TSR program be removed from memory?
13. Describe a TSR program.
12. Explain the difference between an interrupt handler and a memory-resident program.
11. Which MS-DOS functions get and set interrupt vectors?
10. When an interrupt handler finishes, how does the CPU resume execution wherever it was before the interrupt was triggered?
9. When a key is pressed on the keyboard, which hardware interrupt is executed?
8. Based on what you know about IRQ levels, if a program is in the process of creating a disk file and you press a key on the keyboard, when do you think the key will be placed in the keyboard buffer—before or after the file has been created?
7. Which IRQ level has the highest priority, 0 or 15?
6. Which instruction enables hardware interrupts?
5. Which instruction disables hardware interrupts?
4. Which controller chip generates hardware interrupts?
3. At which address is the interrupt vector for INT 10h stored?
2. What is contained in each entry of the interrupt vector table?
1. What default action is carried out by the critical error handler?
18. If you wanted to know the number of relocation entries in an EXE file, where would you look?
17. What is the purpose of the exehdr program?
16. What determines the amount of memory allocated to an EXE program?
15. Where do DS and ES point when an EXE program is loaded?
14. When stored on disk, the two main parts of an EXE program are the header and the ________ module.
13. What is the purpose of the ORG directive?
12. What are the starting values of all segment registers in a COM program?
11. How many program segments can a COM program contain?
10. When running, how efficient is a COM program’s use of memory?
9. What is the memory limitation of a COM program?
8. Which linker command-line switch is required when creating a COM program?
7. Which memory model(s) are used by COM programs?
6. What is a COM program?
5. Where does a transient program keep the segment address of the current environment string?
4. What is the name of the 256-byte area at the beginning of a transient program?
3. What are transient programs?
2. Does MS-DOS look for BAT files before EXE files in the current directory when executing a command?
1. When a command is typed at the MS-DOS prompt, what happens if the command is not an internal MS-DOS command?
11. In the following example, assume that segA begins at address 1A060h. What will be the starting address of the third segment, also called segA?segA SEGMENT COMMON var1 WORD ?var2 BYTE ?segA ends stack SEGMENT STACK BYTE 100h dup(0)stack ends segA SEGMENT COMMON var3 WORD 3000h var4 BYTE 40h segA
10. Write an instruction that uses a segment override.
9. What is the purpose of the class type option in a segment definition?
8. How do you define a segment at an absolute address such as 40h?
7. What is the purpose of the combine type in a segment definition?
6. Which align type is most efficient for an x86 processor?
5. In a segment definition, what are the possible combine types?
4. In a segment definition, what are the possible align types?
3. Explain the function of the ASSUME directive.
2. What value does the SEG operator return?
1. What is the purpose of the SEGMENT and ENDS directives?
9. Box-Drawing Program MS-DOS applications in the 1980s and early 1990s usually displayed boxes and frames using linedrawing characters in text mode. This programming exercise will reproduce those techniques. Write a procedure that draws a single-line frame anywhere on the screen. Use the following
8. Mode 13, Multiple Lines Modify the Memory-Mapped Graphics program in Section 16.5.2 so that it draws a series of 10 vertical lines, each in a different color.
7. Mode 13 Line Modify the Memory-Mapped Graphics program in Section 16.5.2 so that it draws a single vertical line.
6. Plotting a Function Using INT 10h Using the pixel-drawing capabilities of INT 10h, plot the line determined by the equation Y = 2(X2).
5. Drawing a Rectangle Using INT 10h Using the pixel-drawing capabilities of INT 10h, create a procedure named DrawRectangle that takes input parameters specifying the location of the upper left corner and the lower right corner, and the color. Write a short test program that draws several
4. Scrolling Columns in Different Directions Using the Scrolling Text Window exercise as a starting point, make the following change: Before the loop starts, randomly choose each column to scroll either up or down. It should continue in the same direction for the duration of the program. Hint:
3. Scrolling Color Columns Using the Scrolling Text Window exercise as a starting point, make the following changes:• The random string should only have characters in columns 0, 3, 6, 9, . . ., 78. The other columns should be blank. This will create the effect of columns as it scrolls
2. Scrolling Text Window Define a text window that is approximately three fourths of the size of the video display. Let the program carry out the following actions, in sequence:• Draw a string of random characters on the top line of the window. (You can call Random_range from the Irvine16
1. ASCII Table Using INT 10h, display all 256 characters from the IBM Extended ASCII character set (inside back cover of the book). Display 32 columns per line, with a space following each character.
17. Challenge: Who invented the computer mouse, in what year, and at what location?
16. Challenge: Suppose you want the mouse pointer to point to the middle of the character cell located at row 15, column 22 in text mode. What X and Y values will you have to pass to INT 33h Function 4, assuming 8 horizontal pixels per character and 16 vertical pixels per character?
15. Challenge: Suppose you want the mouse pointer to point to the upper left corner of the character cell located at row 10, column 20 in text mode. What X and Y values will you have to pass to INT 33h Function 4, assuming 8 horizontal pixels per character and 16 vertical pixels per character?
14. Write ASM statements that set the horizontal limits of the mouse to 300 and 600.
13. Write ASM statements that set the vertical limits of the mouse to 200 and 400.
12. Write ASM statements that get the mouse position at the point when the right button was released, and store the position in the variables mouseX and mouseY.
11. Which INT 33h function gets mouse button release information?
10. Write ASM statements that jump to label Button1 when the left mouse button has been pressed.
9. Which INT 33h function gets mouse button press information?
8. Write ASM statements that set the mouse pointer to X = 100 and Y = 400.
7. Which INT 33h function sets the mouse position?
6. Write ASM statements that get the mouse position and store it in the variables mouseX and mouseY.
5. Which INT 33h function gets the mouse position and status?
4. Write ASM statements that hide the mouse pointer.
3. Which INT 33h function shows and hides the mouse pointer?
2. Write ASM statements that reset the mouse and get the mouse status.
1. Which INT 33h function resets the mouse and gets the mouse status?
10. Challenge: Show how to set the screen background color in video mode 13h to white.
9. Challenge: Show how to set the screen background color in video mode 13h to green.
8. What are the three RGB values for bright red?
7. What are the three RGB values for white?
6. What are the three RGB values for dark gray?
5. In video mode 13h, what is contained in each element of the color palette?
4. How is the color index used in video mode 13h?
3. In one sentence, explain how video mode 13h sets the colors of pixels.
2. (True/False): In video mode 13h, each screen row uses 320 bytes of storage.
1. (True/False): Video mode 13h maps screen pixels as a two-dimensional array of bytes, where each byte corresponds to two pixels.
7. If a Cartesian origin point is located at screen coordinates sy 250, sx 350, convert the following Cartesian points in the form (X, Y) into screen coordinates (sx, sy):a. (0, 100)b. (25, 25)c. (200, 150)
6. What is the formula to convert a Cartesian X-coordinate to screen pixel coordinates? (Use the variable sx for the screen column, and use sOrigX for the screen column where the Cartesian origin point (0, 0) is located.)
5. Which video mode is 800 600 pixels, in 16 colors?
4. Write ASM statements that set the video adapter to Mode 11h.
3. What is the main disadvantage to drawing pixels using INT 10h?
2. When using INT 10h to draw a single pixel, what values must be placed in the AL, BH, CX, and DX registers?
1. Which INT 10h function draws a single pixel on the video display?
18. Which values should be moved to AH and AL when clearing the screen using INT 10h function 6?
17. Which INT 10h function sets blink/intensity modes?
16. Which parameters are required when writing a character and attribute at the current cursor position?
15. Which parameters are required when scrolling a window upward?
14. How is it possible to hide the cursor?
13. What parameters are required when setting the cursor position with INT 10h?
12. Which INT 10h function gets the current video mode?
11. Which INT 10h function sets the cursor size?
10. Which INT 10h function writes a character and attribute at the current cursor position?
9. Which INT 10h function scrolls a rectangular window upward?
8. Which INT 10h function positions the cursor on the screen?

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Assembly Language For X86 Processors 7th Edition Kip Irvine - Solutions

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