Quote:
Originally Posted by hooverphonique
dma load is not going to affect serial port speed unless you don't have fastram..
the serial port itself can go plenty fast, but as mentioned above, the problem is it interrupts the cpu for each byte transferred, which takes a *lot* of processing power.. That's why pc's switched to UARTs having FIFOs in the beginning of the nineties..
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I wasn't clear.
I meant additional DMA channels for IO.
Serial port send/receive buffers in chipram with their own DMA channels would have been very nice.