Direct Memory Access
Terms
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copy deck
- Direct Memory Access (DMA) provides a way for devices to place large amounts of data in RAM without requesting __________ for each byte of data moved
- processor support
- What does DMA stand for?
- Direct Memory Access
- next
- next
- Older motherboards have ____ DMA channels
- four
- Newer motherboards have _____ DMA channels
- eight
- DMA 2 is always used by the __________
- floppy controller
- On most motherboards, DMA transfers operate at _________ Mhz
- 4.7 (I am not totally sure about this.)
- On most motherboards, DMA transfers operate at 4.77 MHz, though some now offer ______ Mhz
- 8 (I am not totally sure about this one.)
- (On newer motherboards) DMA channels 0 through 3 supporting ______ DMA and channels 4 through 7 supporting _______ DMA.
- 8 bit, 16 bit
- DMA ____ is tied to the 16-bit bus, but transfers data only 8 bits at a time
- 0