Lesson 1 - First proper lesson Flashcards Preview

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Flashcards in Lesson 1 - First proper lesson Deck (12)
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1
Q

What is Setting in CS?

A

Writing to RAM

2
Q

What is Enabling in CS?

A

Taking from RAM

3
Q
  1. What is the first stage of the fde cycle?
A

-Program counter is copied to the MAR

4
Q
  1. What is the second stage of the fde cycle?
A
  • Program counter is incremented
5
Q
  1. What is the third step in the fdr cycle?
A
  • Address in memory address register accessed in RAM via the adress bus.
6
Q
  1. What is the fourth step in the fde cycle
A

-Data at that address in RAM is copied to the Memory Data Register via the data bus

7
Q
  1. What is the fifth step in the fde cycle
A

-Memory Data Register is copied to the Current Instruction Register

8
Q
  1. What is the sixth step in the fde cycle
A

-Contents of Current Instruction Register are decoded by the decode unit

9
Q
  1. What is the seventh step in the fde cycle
A

-Instruction is split into opcode and operand

10
Q
  1. What is the last step in the fde cycle
A

-Decoded instruction is executed

11
Q

How many stages of the fde cycle are there?

A

-8

12
Q

What is Branching?

A
  • You basically skip the instruction and go to another one