[HECnet] NT 4 on AlphaServer es40

Dave McGuire mcguire at neurotica.com
Wed Feb 13 16:47:31 PST 2013


On 02/13/2013 04:29 PM, Johnny Billquist wrote:
I have been thinking about this, anybody knows if a 100 NIC adapter
attached to the AUI port would actually go 100MB full duplex on the
VAX ?

The AUI port already defines you at 10 Mb/s. You need a different
ethernet controller, as the speed is decided by the controller and not
the PHY.

On the Alpha it does, but I have never tried the VAX, I would think it
should, it does in the Stromasys and Simh emulators, but I'm guessing.

That is because Alphas actually might have a 100 Mbit/s ethernet
controller. No VAX that I know of do.

An emulated machine is a totally different topic. There you are still
emulating a 10 Mb/s interface, even though it might map towards a 100
Mb/s physical backend.

  There are faster network interfaces for VAXen, just not Ethernet.   It
still wouldn't be an "apples to apples" comparison, but it'd be closer.

                        -Dave

-- 
Dave McGuire, AK4HZ
New Kensington, PA



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