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12 Cards in this Set
- Front
- Back
What are the 100 mail boxes? What the ###?
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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.
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What is OP code?
What is Instruction? |
defines the instruction to the cpu.
Request to the proccers. |
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Op code and their incrution?
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1## load
2## store 3## add 4## subtract 5## input 6## output 7## Take break 8## skip 9## Jump (increment until it eqauls ##) |
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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. |
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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. |
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Unconditonal branch?
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contune proccessing instructions at a spefficed mem address.
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conditonal branch?
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If true contune proccessing instructions at a spefficed mem address.other wise move o the next instruction.
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RISC
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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. |
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CISC
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1. one instruction can perfrom a complex opreation.
2. Requires less mem to perform. 3.Need lost of space and processing time. |
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System clock
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Clock ticks
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hertz
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1 clock tick/ sec
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clock rate
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tiime to fetch and decode the simplest insrction.
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