Subject:
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Re: nop in NQC?
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Newsgroups:
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lugnet.robotics
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Date:
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Tue, 6 Jan 2004 00:56:06 GMT
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Viewed:
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745 times
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In article <Hr150r.vu2@lugnet.com>, "Brian Davis" <brdavis@iusb.edu>
wrote:
> Is there a NQC command that will translate to a simple nop bytecode? I'm
> looking for a way to do fine-precision timing, and frankly checking a timer
> takes too long. For very fine motor control, I'm trying to use sequences
> like:
>
> On(OUT_A+OUT_C);
> Off(OUT_A+OUT_C);
>
> I'm trying to run the motors at an effective slow speed, while still at a
> reasonable power level. This works, but I'm wondering if I can goose the
> speed
> up slightly with an effective nop or other single-bytecode command inbetween
> the
> On & Off commands.
I think all of the single bytecode commands have side effects, which may
or may not matter to you. You might want to use UnmuteSound().
Another option would be to create a command that does nothing. For
example, a jump to the following command:
__nolist void NOP() { asm { 0x27, 1 }; }
Or assigning var 0 its own value:
__nolist void NOP2() { asm { 0x14, 0, 0, 0, 0 }; }
For both of these cases you need to create the asm functions defined
above and not use higher level syntax since NQC will usually optimize
out statements like x=x;
Dave
p.s. I haven't tested either of the above functions on an RCX - I'm
going from memory here. Use at your own risk.
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Message is in Reply To:
 | | nop in NQC?
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| Is there a NQC command that will translate to a simple nop bytecode? I'm looking for a way to do fine-precision timing, and frankly checking a timer takes too long. For very fine motor control, I'm trying to use sequences like: On(OUT_A+OUT_C); (...) (21 years ago, 5-Jan-04, to lugnet.robotics)
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