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 Robotics / RCX / NQC / 184
183  |  185
Subject: 
Re: Download problem
Newsgroups: 
lugnet.robotics.rcx.nqc
Date: 
Sat, 2 Oct 1999 23:13:29 GMT
Viewed: 
4592 times
  
In lugnet.robotics.rcx.nqc, Ian Warfield writes:
> [...snip...]
> The only conclusion I can come to is that this is a bug in the RCX, since it
> appears to be happening with both NQC and Spirit.OCX (and, since NQC doesn't
> use the Spirit.OCX, this indicates that the problem doesn't lie with either of
> them - Dave is off the hook).  Perhaps the RCX has a "download receive" buffer
> that can overflow, and the transmitter can download faster than it empties
> out.  Like you said, it doesn't happen with my short programs, only the really
> long ones.
> 
> I'd be curious as to whether anyone else has experienced this problem.  It
> might turn out to be the first reported bug with the RCX 1.0!

Thanks for your help. Hope you're wrong, otherwise I have to dramatically
downsize my program and make it a lot more stupid :-)

Some more info on the problem:
- The memory has been cleared before any attempt.
- I tried both NQC 1.3 and NQC 2.0 in 1.x compatibility mode (option -1): same
results.
- I succeded in completing just one of a new long series of attempted
downloads. After that, the free remaining memory of the RCX was about 2k of the
initial 6.
- Launching NQC from a console window instead of RcxCC, I can see that NQC
reports a communication problem with the IR tower.
- I tested two different Rcx units, both running from fresh batteries.
- Dave Baum reports he has no problem at all in downloading my program. He runs
NQC on a Mac, while I'm using a WinNT PC.

I'm short of ideas :-(
Anybody else would try to test my program? I could send it by e-mail to some
volunteers so we get a more general perspective of the problem.

Thanks
Mario



Message is in Reply To:
  Re: Download problem
 
(...) programs with the Spirit.OCX. I coded a huge program, with lots of tasks and subroutines, and long stretches of code. When I try to download it, I get the dots and then AsyncronBrickError returns Error 2048 (not 100% certain about the number) (...) (27 years ago, 2-Oct-99, to lugnet.robotics.rcx.nqc)

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