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MAEC TOOL NEWS:
MAECT-M3T-NC308WA-020416D
Notes on C Compilers
M3T-NC308WA, M3T-NC30WA, and M3T-NC79WA
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Please take note of the following problems in using C compilers (with an assembler and integrated development environment) M3T-NC308WA, M3T-NC30WA, and M3T-NC79WA:
- On function-extending directive command "@" for concatenating character strings
- On the tag jump function
- Problem on Function-Extending Directive Command "@" for Concatenating Character Strings
- 1.1 Products and Versions Concerned
- C compiler for the M32C/80 and M16C/80 series MCUs :
- M3T-NC308WA V.1.00 Release 1 -- V.3.10 Release 3
- C compiler for the M16C/60, M16C/30, M16C/20, and M16C/10 series MCUs :
- M3T-NC30WA V.3.20 Release 1 -- V.5.00 Release 1
- C compiler for the 79xx series MCUs :
- M3T-NC79WA V.3.20 Release 1 -- V.4.10 Release 1
- Relocatable assembler for the M32C/80 and M16C/80 series MCUs :
- M3T-AS308 V.1.00 Release 1 -- V.2.00 Release 1
- Relocatable assembler for the M16C/60, M16C/30, M16C/20, and M16C/10 series MCUs :
- M3T-AS30 V.1.00 Release 1 -- V.3.20 Release 1
- Relocatable assembler for the 79xx series MCUs :
- M3T-AS79 V.2.00 Release 1 -- V.3.20 Release 1
- 1.2 Description
- When a character string containing an @ as a character constant is described in the operand of a .BYTE instruction, the @ may be interpreted as a concatenation operator.
- 1.3 Conditions
- This problem occurs if the following two conditions are satisfied:
- (1) Two or more character strings are described in the operand of a .BYTE instruction.
- (2) In the character strings in (1) above, one that contains a double quote " is described before another that contains a character constant @.
- 1.4 Examples
--------------------------------------------------------------------
.byte '"', "A@B" ; Treated as '"' , "AB" since the @
; is interpreted as a concatenation operator.
--------------------------------------------------------------------
Note that the description shown in the following example is treated properly because it does not satisfy Condition (2) above.
--------------------------------------------------------------------
.byte "A@B", '"' ; Treated as "A@B" , '"' since the @
; is interpreted as a character constant.
--------------------------------------------------------------------
- 1.5 Workaround
- When a character string containing a double quote is described in advance of another containing a character constant @, split them into two lines or more.
[Example]
--------------------------------------------------------------------
.byte '"'
.byte "A@B" ; Treated as it is.
--------------------------------------------------------------------
- 1.6 Schedule of Fixing the Problem
- We plan to fix this problem in our next release.
Notes on C Compilers M3T-NC308WA, M3T-NC30WA, and M3T-NC79WA
MAECT-M3T-NC308WA-020416D
- Problem on the Tag Jump Function
- 2.1 Products and Versions Concerned
- C compiler for the M32C/80 and M16C/80 series MCUs :
- M3T-NC308WA V.1.00 Release 1 -- V.3.10 Release 3
- C compiler for the M16C/60, M16C/30, M16C/20, and M16C/10 series MCUs :
- M3T-NC30WA V.3.20 Release 1 -- V.5.00 Release 1
- C compiler for the 79xx series MCUs :
- M3T-NC79WA V.3.20 Release 1 -- V.4.10 Release 1
- Relocatable assembler for the M32C/80 and M16C/80 series MCUs :
- M3T-AS308 V.1.00 Release 1 -- V.2.00 Release 1
- Relocatable assembler for the M16C/60, M16C/30, M16C/20, and M16C/10 series MCUs :
- M3T-AS30 V.1.00 Release 1 -- V.3.20 Release 1
- Relocatable assembler for the 79xx series MCUs :
- M3T-AS79 V.2.00 Release 1 -- V.3.20 Release 1
- 2.2 Description
- When TM (Integrated Development Environment) is used, the editor's tag jump function may not be carried out for error or warning messages sent by the assembler.
- 2.3 Condition
- This problem occurs if an error or warning message is displayed in the same line that a macro processing status message "---*---" is described in.
- 2.4 Example
--------------------------------------------------------------------
M16C/60 Series Assembler system Version 4.10 Release1
Copyright 2001, MITSUBISHI ELECTRIC CORPORATION
AND MITSUBISHI ELECTRIC SEMICONDUCTOR APPLICATION ENGINEERING CORPORATION
All Rights Reserved.
( test.a30 )
macro processing now
----*----*test.a30 26 Warning (mac30): Actual macro parameters are not enough
test.a30 29 Warning (mac30): Actual macro parameters are not enough
:
:
--------------------------------------------------------------------
Here, the tag jump function cannot be carried out for "test.a30 26 Warning (mac30): Actual macro . . ."
- 2.5 Workaround
- This problem will be circumvented in either of the following ways:
- (1) Disable the macro processing status message "---*---" from being displayed on screen by using assembler command option "-." (Even if you do this, error or warning messages can be displayed.)
- (2) Create a tag file for assembler errors with assembler command option "-T" selected, and use an editor's tag jump function using this tag file.
- 2.6 Schedule of Fixing the Problem
- We plan to fix this problem in our next release.
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