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• With using assembler start-up files
• With using C-language start-up files

1. With using assembler start-up files
1.1 Product and Version Concerned
    The C compiler package (M3T-NC30WA) for the M16C series 
      V.5.42 Release 00

1.2 Description
    If you use any assembler start-up file generated by the High-performance 
    Embedded Workshop, the user stack pointer is not set properly.

1.3 Conditions
    This problem occurs when the assembler start-up file is generated 
    by the High-perfomance Embedded Workshop, if status is set to use the 
    user-stack on making a new workspace. The default status is to use the 
    user-stack.
    In this case, the value of __STACKSIZE__ defined in the nc_define.inc 
    file is equal to or greater than 1.

1.4 Workarounds
    When a new workspace is generated:
      We provide you with the problem-fixed start-up file ncrt0.a30.
      So, go through the following steps:
       (1) Download the ZIP file.(3KB)
       (2) Decompress the ZIP file to obtain the st_up folder.
       (3) Overwrite the previous st_up folder that resides in the 
           following directory* with the one obtained in (2):
             Hew¥System¥Pg¥Renesas¥M16C¥V5_42_0¥Generate
           * In this directory, the High-performance Embedded Workshop 
             has been installed; it is under C:¥ProgramFiles¥Renesas¥ 
             by default.

    When a workspace has existed already:
      Modify source-lines in the ncrt0.a30 according to the following cases
      - The start-up file for R8C/Tiny series: Change 35 and 36 lines
      - The start-up file for M16C family: Change 41 and 42 lines

       Before changing:
       --------------------------------------------
       .if __STACKSIZE__ != 0
           ldc #stack_top,sp ;set stack pointer
           ldc #0080h,flg 
       .else
           ldc #0000h,flg
       .endif
       --------------------------------------------

       After changing:
       --------------------------------------------
       .if __STACKSIZE__ != 0
           ldc #0080h,flg
           ldc #stack_top,sp ;set stack pointer 
       .else
           ldc #0000h,flg
       .endif
       --------------------------------------------

1.5 Schedule of Fixing the Problem
   We plan to fix this problem in the next release of the product.

2. With using C-language start-up files
2.1 Product and Versions Concerned
    The C compiler package (M3T-NC30WA) for the M16C series
      V.5.40 Release 00 and V.5.42 Release 00

2.2 Description
    If you use any C-language start-up file generated by the High-
    performance Embedded Workshop, the section for external variables 
    with initial values may not be initialized properly.

2.3 Conditions
    This problem occurs if the following conditions are all satisfied: 
    (1) The initsct.c file is not linked at the top of the user program.
    (2) The last of a section in the file linked to the user program 
        immediately before the initsct.c file has an odd address.

2.4 Workarounds
    Go through the following steps to link the initsct.c file at first 
    to the user program:
     (1) Open the Build menu and Select the Linkage Order command.
         You see the Linkage Order dialog box.
     (2) Check the Use custom linkage order check box.
     (3) Click "initsct.r30" in the list displayed; then press the Move 
         to top button.
     (4) Press the OK button to close the dialog box.

2.5 Schedule of Fixing the Problem
    We plan to fix this problem in the next release of the product.