Input/Output I cs423. Klara Nahrstedt/Sam King. Administrative. MP3 is out Page Replacement – FIFO and Second Chance Start early Deadline November 5, 2007 (Monday, 8am) Re-grading of HW1 and Midterm is still going on for online-Internet students
Klara Nahrstedt/Sam King
DMA controller feeds the characters to disk one at the time, without CPU being bothered. DMA is actually the programmed IO, only with DMA controller doing the work.
What are the issues with DMA?
(a) A single-bus architecture
(b) A dual-bus memory architecture
Layers of the I/O system and the main functions of each layer