The following example shows how to find out how much memory of a
particular type is available.

    ULONG size;

    size = AvailMem(MEMF_CHIP|MEMF_LARGEST);

availmem() returns the size of the largest chunk of available chip memory.

    availmem() may not be totally accurate.
    ---------------------------------------
    Because of multitasking, the return value from AvailMem() may be
    inaccurate by the time you receive it.

The following example shows how to determine the type of memory of a
specified memory address.

    ULONG memtype;

    memtype = TypeOfMem((APTR)0x090000);
    if ((memtype & MEMF_CHIP) == MEMF_CHIP) {/* ...It's chip memory... */}

typeofmem() returns the attributes of the memory at a specific address. if
it is passed an invalid memory address, TypeOfMem() returns NULL. This
routine is normally used to determine if a particular chunk of memory is
in chip memory.