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10 Cards in this Set
- Front
- Back
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Basic parts of a computer |
ALU Control Unit Memory Unit Input Unit Output Unit |
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What is address bus? |
Carry cpu generated signals outward to memory and i/o devices - Unidirectional - address lines determine the size of accessible memory space |
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What is data bus? |
Data signals that travel in and out of a microp - number of wires in the data bus correspond to word size that the microp operates with -8086 has 16 bit data bus and 8088 has 8 bit data bus -bidirectional |
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What is a control bus? |
carry signals to and from the cpu and external devices |
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Diagram of a bus structure? |
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Bus interface Unit components? |
Segment registers Instruction pointers Address gen adder Bus control logic Instruction Queue |
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Components in EU? |
Arithmetic Logic Unit General purpose registers Temporary operand registers Status and control flags |
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Execution Unit registers |
Accumulator Registers Base registers Counter register Data Register Base pointer register Stack pointer register Source index register Destination Index register FLAGS register |
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BIU registers? |
Instruction pointer Code segment Data segment Stack segment Extra segment |
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How are the EU and BIU connected and how does it work? |
Connected by an internal bus Implement parallel processing, BIU fetches up to 6 bytes for 8086 and 4 bytes for 8088 and places them in instruction queue (instruction prefetch) |
