Subject:
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Re: Using NQC with Scout
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Newsgroups:
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lugnet.robotics.scout
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Date:
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Sat, 4 Dec 1999 13:37:54 GMT
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Viewed:
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4885 times
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Dave Baum <dbaum@spambgoneenteract.com> wrote in message
news:dbaum-0312992130500001@207-229-150-218.d.enteract.com...
...
> The Lego tools probably also unlock the Scout, but I haven't used them, so
> I can't say for sure. Once unlocked, you're ready to download using NQC.
Yes, the lego tools do this too.
> 3) NQC doesn't know about the whole local variable thing. All variables
> are equal, and you don't have much control over whether they are global or
> local. I'll probably add some support into NQC to allow better control
> over variable placement, but this will take some thought. BTW, Lego still
> hasn't given us *real* local variables - I mean something on a stack.
> This precludes any sort of decent subroutine generation and recursion
> <sigh>. The "locals" are still ok for passing parameters to subroutines,
> but this is pretty hideous - think of those as "registers" rather than
> local variables.
Registers are a good way to think of them. I wish we had a stack too.
We will need to access these for NQC to be really useable though.
>
>
> 4) NQC doesn't know about any of the new bytecodes. Things like 'playv'
> or 'light'. Overall, most of these should be relatively easy to implement
> as inline functions that translate to the NQC assembler. If you browse
> through rcx.h you'll see how this was done for the RCX. I'll probably add
> suitable definitions for Scout functions as well (and a compile time
> symbol to determine which target you're on similar to cybermaster support
> in NQC).
Sounds Great!
>
> 5) NQC's listing is completely divergent from the LASM mnemonics. I guess
> this was inevitable since I just guessed at opcodes. Now that we have
> some official names for the bytecodes, I'll adjust the disassembler to
> produce code that looks more like LASM.
Maybe just have an option for LASM mnemonics. Maybe I'm just used to yours,
but I like yours better. :-)
Thanks a lot for your interest Dave.
--Mike
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Message is in Reply To:
 | | Using NQC with Scout
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| It appears that the download protocol and control structure bytecodes are identical between the RCX and Scout. This means that NQC can be used as-is to generate some Scout code. There are a few caveats, however... 1) You'll need to put the Scout (...) (27 years ago, 4-Dec-99, to lugnet.robotics.scout)
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