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 Robotics / RCX / legOS / 1436
    Memory Usage —Michael Ash
   Well, I've gone and run out of memory with my RCX. It manifested itself in a task that refused to run, presumably because the OS couldn't allocate enough memory for its stack. Took a while to track down and was annoying, but it was my own fault for (...) (24 years ago, 14-Oct-00, to lugnet.robotics.rcx.legos)
   
        Re: Memory Usage —Paolo Masetti
   (...) itself in (...) allocate (...) annoying, (...) You can test memory left using the routine from Eddie: (URL) Anyway, my question is, how can I reduce memory usage? I think cutting (...) HOWTO, (...) that (...) a (...) in (...) process is (...) (...) (24 years ago, 15-Oct-00, to lugnet.robotics.rcx.legos)
   
        Re: Memory Usage —Michael Ash
   (...) Well, I was thinking along the lines of having gcc optimize my program for space instead of speed. Of course, I'd be better off if *I* optimized for space instead of speed, but it can't hurt to have the compiler working for me, if it's (...) (24 years ago, 15-Oct-00, to lugnet.robotics.rcx.legos)
   
        Re: Memory Usage —Paolo Masetti
   (...) changing (...) place for (...) program for (...) optimized for (...) working for (...) I've further investigated and you can gain some more bytes compiling kernel (and your programs) with -Os option instead of -O2 (Makefile.common, COPT (...) (24 years ago, 15-Oct-00, to lugnet.robotics.rcx.legos)
   
        Re: Memory Usage —Michael Ash
   (...) Ok, thanks. I'll try everything else first, then try this if I get desperate. The main thing I hit a wall with was when I switched to floating-point, which increased my .lx filesize by about 2k, so if I go back to fixed-point, turn sound off (...) (24 years ago, 15-Oct-00, to lugnet.robotics.rcx.legos)
   
        Re: Memory Usage —Jakob Engblom
   (...) Having written a few embedded-systems compilers, I must say that using floating point on an 8-bit chip like the H8 is generally considered crazy. The values eat memory, and the libraries drawn in can get really large (at least for a production (...) (24 years ago, 25-Mar-01, to lugnet.robotics.rcx.legos)
 

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