1 votes 1 votes DMA interface unit eliminates the need to use CPU registers to transfers data from (a) MAR to MBR (b) MBR to MAR (c) I/O units to memory (d) Memory to I/O units tiger asked Dec 20, 2015 tiger 759 views answer comment Share Follow See all 4 Comments See all 4 4 Comments reply Tendua commented Dec 20, 2015 reply Follow Share it will be c if they have considered memory to be main memory. what is the answer. 0 votes 0 votes tiger commented Dec 20, 2015 reply Follow Share why its not d ? 0 votes 0 votes Tendua commented Dec 20, 2015 reply Follow Share dma is used to transffer data from slow devices to main memory . it does not work in reverse order. 0 votes 0 votes focus _GATE commented Dec 20, 2015 reply Follow Share this question is from made easy test series ..i have marked as c option but it was shown wrong by made easy.?? my logic was that DMA basically used to trasnfer the data from I/O to main memory with very high speed so there is no need of register during this tranfer phase.!! 0 votes 0 votes Please log in or register to add a comment.
