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RE: custom serial driver
No, there is an arbitration mechanism for the memory
so the CPU will be able to access the memory while the
DMA is running.
From: Ronny L Nilsson [mailto:email@example.com]
Sent: Wednesday, March 06, 2002 2:03 PM
To: Mikael Starvik; dev-etrax
Subject: Re: custom serial driver
> Yes, that is true. You can't send data byte by byte if dma
> is enabled for the serial port.
Another DMA question:
If I do a large but _slow_ dma transfer to a pheripheral interface,
will this block cpu from accessing memory. I.e. will my system halt
until dma transfer is complete?