What's New in C166 Version 7.53

• [C166 Compiler]
  • Corrected: an address conversion error. Address conversion from xhuge address to 'unsigned long' does not consider 64K segment boundaries. Example:

    #pragma LARGE BROWSE MOD167 DEBUG
    
    
    unsigned char xhuge ucArr[0x20000];      // Assuming that this array is located at address 0x10204.
    
    unsigned int xhuge * Addr1 = &ucArr[0x10000];                     // The Addr1 is 0x20204 which is the expected address.
    unsigned long const  Addr2 = (unsigned long)(&ucArr[0x10000]);    // The Addr2 is 0x10204 which is an incorrect result.
                                                                      // This cast does not consider the 64K segment overvlow.
    

  • Corrected: a stack corruption when __inline function is used with OT(4) or greater. This problem was introduced with C166 version 750. Example:

    unsigned char g_ucArr[4]={0x10,0x11,0x12,0x13};
    
    static __inline void InlFnc(unsigned char par)
    {
      signed long *slDat;
      unsigned char ucArr[4];
    
      ucArr[0]=g_ucArr[3];
      ucArr[1]=g_ucArr[2];
      ucArr[2]=g_ucArr[1];
      ucArr[3]=g_ucArr[par];
    
      slDat=(signed long *)ucArr;
    }
    
    
    void foo(void)     // In function foo(), the compiler alocates only 2 bytes on the stack,
    {                  // while the object inside the inlined function InlFnc() needs 4 bytes.
     InlFnc(0);        // That causes corruption of other data on the stack.
    }
    

• [ULink2]
  • Since C166 version 7.52 the firmware of the ULINK2 target debuger will be updated to version 2 which will not work with older C166 installations.
    The .\C166\ULINK\Utilities\UL2_Configure.exe tool allows to switch back to an older firmware version when backward compatibility is needed.
• [µVision4]
  • This C166 release comes with µVision V4.72.9.0.
  • Refer to Revision History for a complete list.