Get an Ethernet Card
Alex Satrapa
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
>> doesn't
>> 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
years?
Alex
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 225 bytes
Desc: not available
Url : http://lists.samba.org/archive/linux/attachments/20020907/c2db8407/attachment.bin
More information about the linux
mailing list