08-01-2011
From the silence, I sense my gut feel is right: they vary tremendously in what they do and how much they load CPU and RAM bus, as well as how well they do it, latency and bandwidth and duplex support and bells and whistles that might be worth it. Probably as bad a video cards! With multicore systems, is CPU cost a worry? Might e slower than an embedded CPU! Good luck. AnandTech has been a good reference in many areas, so he might come through here, too.
http://www.anandtech.com/show/2956/1...-bottleneck-/1
Last edited by DGPickett; 08-01-2011 at 05:17 PM..
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MCA(4) BSD Kernel Interfaces Manual MCA(4)
NAME
mca -- introduction to machine-independent MCA bus support and drivers
SYNOPSIS
mca0 at mainbus?
options MCAVERBOSE
Machine-dependent; depends on the bus topology and MCA bus interface of your system. Typical MCA buses are connected directly to the main
system bus.
DESCRIPTION
NetBSD includes a machine-independent MCA bus subsystem and several machine-independent MCA device drivers.
HARDWARE
NetBSD includes machine-independent MCA drivers, sorted by device type and driver name:
SCSI controllers
aha Adaptec AHA-1640 SCSI interface
esp NCR 53C90 SCSI Adapter
Disk and tape controllers
edc IBM ESDI Fixed Disk Controller
Serial interfaces
com NS8250-, NS16450-, and NS16550-based serial cards.
Network interfaces
tr TROPIC based token ring interfaces
ate Allied-Telesis 1720 Ethernet interface cards
we WD/SMC WD80x3x Ethernet interface cards and clones
le SKNET Personal and MC+ Ethernet interface cards
elmc 3Com EtherLink/MC (3c523) Ethernet interface
ep 3Com EtherLink III 3c529 Ethernet interface
tra Tiara LANCard/E and Standard MicroSystems 3016/MC Ethernet interface
SEE ALSO
aha(4), ate(4), com(4), edc(4), elmc(4), ep(4), esp(4), le(4), ne(4), tr(4), tra(4), we(4)
HISTORY
The machine-independent MCA subsystem appeared in NetBSD 1.5.
BSD
March 3, 2005 BSD