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12 Cards in this Set

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  • Back
What are the 100 mail boxes? What the ###?
00-99, each have a 3# letter in them, which is the instruction.The first number is the OP code. The next two are the mail box.
What is OP code?
What is Instruction?
defines the instruction to the cpu.
Request to the proccers.
Op code and their incrution?
1## load
2## store
3## add
4## subtract
5## input
6## output
7## Take break
8## skip
9## Jump (increment until it eqauls ##)
Data movement intrucction
Load?
Store?
Move?
Load is fetch data from memory or reg.

store is send data from reg to mem

move is transfer data between reg or mem loctions.
Data Transformation
AND?
OR?
XOR?
NOT?
ADD?
SHIFT?
AND IS: bitwise logical product of two values.

OR IS: Bitwise logical sum of two values.

XOR- Bitwise logical diff of two numbers.

NOT- negates a bollean value

ADD- Arithmetic of two values.
Shift- logiacl or arithmic change of bit positons.
Unconditonal branch?
contune proccessing instructions at a spefficed mem address.
conditonal branch?
If true contune proccessing instructions at a spefficed mem address.other wise move o the next instruction.
RISC
1.mostly simple instrunctions.
2. Use reg inputs and outputs(not many)
3.May need instruction to do somthing.

4. use fixed length instrunctin and lots of reg.
CISC
1. one instruction can perfrom a complex opreation.
2. Requires less mem to perform.
3.Need lost of space and processing time.
System clock
Clock ticks
hertz
1 clock tick/ sec
clock rate
tiime to fetch and decode the simplest insrction.