Get an Ethernet Card
grail at goldweb.com.au
Sat Sep 7 13:52:56 EST 2002
On Saturday, September 7, 2002, at 12:19 , Matthew Hawkins wrote:
> Alex Satrapa (grail at goldweb.com.au) wrote:
>> At least the Tulip chipset is busmastering/DMA, so the processor
>> have to actually load the data into the card. The greatest claim to
> Actually, it does. What it doesn't have to do, though, is handle an
> interrupt for every byte of data (unlike the Realtek 8029).
Huh? The processor sets up the packet to be sent in RAM, then points
the card at the location/size of the packet, and lets the card transfer
the data by itself. A receive buffer works the same way - NIC says "I
have something for you", processor says "Dump it into RAM here".
Or have I been believing the wrong thing about DMA for the last few
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