Linux-Hams archive - January 1997: Re: listen problems.

Re: listen problems.

gdbcl.bmhaewyd@bytemobile.com
Mon, 6 Jan 1997 22:24:00 +1100 (EST)


Tomi Manninen typed:
>
> On Fri, 3 Jan 1997 ljuasjkk.pfaljxxslr@rele.tunk.net wrote:
>
> When this problem was first discussed on this list something like a year
> ago i remember Alan Cox saying something like "Yes it's an old problem in
> the PI driver, it seems to slip a byte (or was it bit?) in the beginning
> of the frame sometimes." That would match your conclusion.
That's what is happening, but the question is why and also where.

> This problem was the reason why I added the callsign validity check in the
> listen code. I was annoyed because every now and then a garbled callsign
Which is great, but only removes the symptom, not the cause.

> > I have a PT or PackeTwin card. The device drivers for both a very similar.
> > I remember seeing some dramitic warnings in the packetwin driver code for
> > NOS, perhaps it is time to re-read them again. I would be nice if Don was
> > active.
>
> Wasn't the PT driver modified from the PI driver?
No, the NOS PT driver is radically different (in some areas) to the others.
The reason why I am so interested in hearing from any non-GPL users of the
PT code was that while the kernel interfacing was the same, the code for the
SCC was different. Memory is a little hazy, but I believe the original
version of the PT driver did not have this problem.

And do you know what is really annoying? For me to get a better PT device
driver, all I needed was for PacComm to say "yeah ok" and I'd be set, if
they own the copyright now that is. Then I could use some of the NOS code.

> The PI driver has had this problem at least as long as I have used my PI2
> card with Linux.
That's because the PI driver has been essentially the same, there are two
versions of the PT driver...
...and a hard drive failure finished off the first!

- Craig vk2xlz

-- 
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