CIS 310 - Final Exam Study Guide

The value of the following signed hex number C123 is _______ in decimal.

-16093

If the AX register contains the value 1112H the value of the carry flag after executing the following instruction is ---------- SHR AX, 1

0

What is the minimum number of binary bits needed to represent the following unsigned decimal integer: 4095

12

For the x86 Architecture the word is

16 bits

Before executing the following code, the value in eax was 1 What will be the value in eax after executing the following code: mov ebx, eax shl eax, 4 shl ebx, 3 add eax, ebx

24

Suppose a computer using direct mapped cache has 2^20 bytes of byte-addressable main memory, and a cache of 32 blocks, where each cache block contains 16 bytes. How many blocks of main memory are there?

2^20/2^4 = 2^16

in the x86 architecture, the EAX register is a ---------- register.

32 bit

The hexadecimal representation of the binary number 0011 0101 1101 1010 is

35DA

arr1 BYTE 70, 80, 90, 100, 30 DUP (?) arrSize = ($ - arr1) arrSize will have the value of

4

The 16 bit hexadecimal representation of decimal -24 is

FFE8

A link library consists of assembly language source code.

False

B4h is a valid MASM hexadecimal literal.

False

In MASM, the multiplication operator * has a higher precedence than the division operator / .

False

In the following code fragment jg will jump to the label Target mov ax, 9105h cmp ax, 26h jg Target

False

JMP is a conditional transfer instruction.

False

Static RAM is usually less expensive than Dynamic RAM.

False

The Loope instruction jumps to a label when (and only when) the zero flag is clear.

False

The acronym PCI stands for programmable component interface.

False

This expression is not a representation of the above logic circuit: F(x,y,z)= xyz + (y' + z)

False

Which instruction shifts each bit in an operand to the left and copies the highest bit into both the Carry flag and the lowest bit position?

ROL

A simplified logical expression represented by the above Kmap is: x'z + xz'

True

Complex Instruction Set Computers (CISC) are characterized by: - A large number of instructions - typically from 100 to 250 instructions. - The instruction set includes specialized instructions that are used infrequently - A large variety of addressing modes - typically from 5 to 20 different modes - Variable length instruction formats - Instructions that manipulate operands in memory

True

IDE bus stands for Integrated Drive Electronics.

True

If F(x,y,z) = xy'(x + z). then F'(x,y,z) = (x'+y)+(x'z') Hint: use DeMorgan's law or truth tables

True

In 32-bit mode the LOOPNZ instruction jumps to a label when ECX is greater than zero and the Zero flag is clear.

True

The call instruction cannot include procedure arguments.

True

The characteristic table of a JK flip flop is represented above. If J(t) = 1, K(t) = 1 and Q(t) = 1, then the value of Q(t+1) is 0.

True

The following is a big-endian representation of the number 74892156h in memory Memory Address: Memory Content: 0000 74 0001 89 0002 21 0003 56

True

The loop instruction first decrements ECX then if it is not equal to zero, then LOOP jumps to the destination label.

True

The truth table for a Boolean expression is shown above. Its canonical sum of products form is:F(x,y,z) = x'y'z' + x'yz' + xy'z + xyz' + xyz

True