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 Robotics / RCX / legOS / 3348
    Re: Modifying the BrickOS source code —Joseph Woolley
   Mike, IIRC, mm_start is the beginning of the heap. When the system or a user program requests memory (new in C++ or malloc/calloc in C) the memory is taken from this block (from mm_start to the end of memory) What might be confusing is how the (...) (21 years ago, 15-Jul-03, to lugnet.robotics.rcx.legos)
   
        Re: Modifying the BrickOS source code —Michael Martelli
   (...) Thanks for the description Joe, but in the above paragraph you seem to contradict yourself, you say that mm_start is the end of kernel mode, but alos that user programs are located above mm_start I do not understand that part, did you mean (...) (21 years ago, 15-Jul-03, to lugnet.robotics.rcx.legos)
   
        Re: Modifying the BrickOS source code —Joseph Woolley
   Here is a visual representation: [ KERNEL ]mm_start[ HEAP ] The heap will contain ALL of the following: User Programs, User Allocated memory, Kernel allocated memory (not including static/global variables and constants). The only thing that is prior (...) (21 years ago, 15-Jul-03, to lugnet.robotics.rcx.legos)
   
        Re: Modifying the BrickOS source code —Michael Martelli
   Thanks Joe, it makes sense now and I understand it is something that is difficutl to explain esp, through a message board. Thanks for helping me out... Mike (21 years ago, 15-Jul-03, to lugnet.robotics.rcx.legos)
 

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