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ECP was designed to increase speed over
EPP by using a DMA channel; therefore, when using ECP mode, you are using a DMA
channel.
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Which parallel port standard uses a DMA channel?
Extended Capabilities Port (ECP) as designed to increase speed over EPP by using a DMA channel; therefore, when using ECP mode, you are using a DMA channel.
An ECP parallel port requires the use of what channel?
dma channel
Why might you choose to use ECP mode for your parallel port rather than EPP mode?
ECP is faster (because it uses a DMA channel).
If ECP mode does not work on your parallel port what should you do next?
· Recall the ECP uses a DMA channel. Allow setup to keep DMA3 unless you suspect a conflict with another device trying to use DMA
When might you need to disable ECP mode for a parallel port?
# If you are having problems with resource conflicts, you could try disabling ECP mode for the parallel port. EPP mode gives good results and does not tie up a DMA channel.
Does a DMA channel bypass the CPU?
Yes, DMA does bypass the CPU.
List four system resources that software uses to manage hardware?
IRQ, DMA Channel, I/O Addresses, Memory Addresses
Floppy drive use the dma channel?
a customer as an IBM Desktop computer
What 8257 chip means?
The 8257 is a three channel DMA controller.
What dma channel is used to cascade into the lower 4 dma channels?
lol ur doing the same homework assignment for me as in MR Jahns CST1 computer class in Orange Park FL at OPHS :P the A+ Guide to Hardware is the book we are using That doesn't answer the question at all. You're no help The answer is 4.
Which direct memory access channel is used for the floppy controller?
From http://www.brainbell.com/tutors/A+/Hardware/Direct_Memory_Access_DMA.htm "DMA channels use the same rules as IRQs. Just as with the 8259 chip, DMA availability soon became a problem because an insufficient number of channels was available. A second DMA chip was added for 286-based computers. Just like the second IRQ chip, these two are cascaded, allowing a total of eight DMA channel assignments (usually referred to simply as DMA channels). The floppy disk drives on all computers use DMA channel 2."
What resources allows a hardware device to directly access RAM?
DMA Channel
