On 1/13/12 3:46 PM, Chris Albertson wrote:
On Fri, Jan 13, 2012 at 3:18 PM, Jim Lux<[email protected]> wrote:
On 1/13/12 2:51 PM, Chris Albertson wrote:
$150 is $130 more than $20. It depends on if an ISA type computer
shows up for free. I'm having doubts that one will. They seem to
have become valuable. The machine would need to be at least a Pentium
II so it could boot off the network and then mount some disk space. I
know what you mean about maintenance so i don't want any disk inside
and no OS installed.
I'm surprised that no one has built a GPIB controller from a uP.
Electrically the GPIB is simple and slow by modern standards.
That's exactly what the Prologix is... a microcontroller that implements
IEEE-488/GPIB with a command interface (serial port emulation with USB)
Maybe what you mean is "why has nobody published a design and software for
free?"
I've been Googling,....
Yes there is a free published. It appears to be the very much like
the Prologix. The Prologix was the next iteration of this design.
http://lpvo.fe.uni-lj.si/en/raziskave/elektronika/podatkovni-in-merilni-vmesniki/
Fascinating.. so basically, by spending $150 you save whatever time
you'd spend buying the $50 worth of parts (which might be more by now)
and assembling it. Seems a nice way to cover both ends of the user
spectrum.
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