Priority arbiter - PowerPoint PPT Presentation

Interrupt Controller (Introduction to 8259)

Interrupt Controller (Introduction to 8259). Dr A Sahu Dept of Comp Sc &amp; Engg . IIT Guwahati. Hierarchy of I/O Control Devices. 2 Port (A,B), No Bidirectional HS mode (C) 4 mode timer. 8155 I/O + Timer. 8255 I/O. 2 Port (A,B) A is Bidirectional HS mode (C) Extra controls.

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1.03k views • 30 slides

A simple bus

rd'/wr. Processor. Memory. enable. addr[0-11]. data[0-7]. bus. bus structure. A simple bus. Wires: Uni-directional or bi-directional One line may represent multiple wires Bus Set of wires with a single function Address bus, data bus Or, entire collection of wires

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410 views • 15 slides

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