On Jun 5, 2007, at 12:57 PM, Brian Lloyd wrote:
The problem is, USB is a bad choice in this situation. It is a
short-range master-slave system. It is intended to have a single
master controller control a few attached devices. That works for
peripherals on your PC but it is not general purpose for our shack.
We really want something that is peer-to-peer and has no limitations.
FireWire.
Given the cost of serial and the cost of Ethernet I would tend to
disagree. Other than perhaps some backward compatibility there is
no real advantage to serial RS-232 over Ethernet and a lot of
disadvantages.
Yes. But, Ethernet is just the physical layer. What you really need
is a set of higher-level protocols that run over a high-speed
connection.
The single-connection aspect of serial ports is the source of the
limitation. (Although I did work on an multi-connection serial
protocol while I was at Hayes called AutoStream)
No, that would be a bad decision as it would not make anything any
better. Ethernet provides multiplexing already. Serial does not.
Ethernet provides 1000 Mbps. Serial does not. I could go on and on.
Ethernet-to-serial is just a band-aid. Better to put the ethernet
controller right on the processor's bus where it belongs then you
have all the features of Ethernet. And you can still emulate a
serial interface if you really want to.
Yup. Sounds like a good idea.
To me, though, whether Ethernet, USB or FireWire, you'd get this
advantage.
Bill Coleman, AA4LR, PP-ASEL Mail: [EMAIL PROTECTED]
Quote: "Not within a thousand years will man ever fly!"
-- Wilbur Wright, 1901
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