COMPUTER FUNDAMENTALS

INTRODUCTION TO COMPUTERS

COMPUTER ARCHITECTURE AND ORGANIZATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Select an incorrect statements about instruction priority in LC-3
A
Consists of 8 priority levels
B
Level 8 is the highest priority
C
Level 8 can interrupt Level 3 instruction
D
Level 3 can interrupt Level 8 instruction
Explanation: 

Detailed explanation-1: -Is there a sequence of LC-3 instructions that will cause the condition code at the end of the sequence to be N = 1, Z =1, and P = 0? Explain. Can’t happen. The condition where N = 1, Z = 1 and P = 0 would require the contents of a register to be both negative and zero.

Detailed explanation-2: -Instruction Set Architecture (ISA). LC-3 has 16-bit instructions.

Detailed explanation-3: -The LC-3 instruction set implements fifteen types of instructions, with a sixteenth opcode reserved for later use. The architecture is a load-store architecture; values in memory must be brought into the register file before they can be operated upon.

There is 1 question to complete.