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RENESAS TOOL NEWS on March 1, 2005: RSO-M3T-NC30WA_2-050301D
A Note on Using
C-Compiler Package M3T-NC30WA
--On Using Assembler Directive Commands--
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Please take note of the following problem in using the M3T-NC30WA
C-compiler package, which is used for the M16C/60, M16C/30, M16C/Tiny,
M16C/20, M16C/10, and R8C/Tiny series of MCUs:
- On using assembler directive commands ".ID", ".PROTECT" and ".OFSREG"
- Versions Concerned
M3T-NC30WA V.5.20 Release 1 through V.5.30 Release 02
- Description
If assembler directive commands ".ID", ".PROTECT", or ".OFSREG" is put
in the program, the following option and others cannot be used:
Note, however, that ".OFSREG" affects only the M3T-NC30WA V.5.30 Release 02.
| (1) | Command option "-U" in the LN30 linkage editor |
| (2) | The STK viewer |
| (3) | The Map viewer |
| (4) | The UTL30 utility, which declares SBDATA and the SPECIAL page functions |
| (5) | The inspector functions in the TM (an integrated development environment) |
| NOTICE: |
In the M3T-NC30WA V.5.30 Release 02, assembler directive command
".OFSREG" has already been written in the section definition file
sect30.inc in the \src30\startup directory, where the M3T-NC30WA
resides.
When the R8C/Tiny series is selected as a group to be compiled or
assembled in the High-performance Embedded Workshop, or "-R8C" is
selected as a parameter of any compile or assembler option,
assembler directive command ".OFSREG" in the sect30.inc file becomes
valid, so the above-mentioned five items cannot be used. |
- Workaround
This problem can be circumvented in any of the following ways:
| (1) |
Delete assembler directive command ".ID" and use command
option "-ID" of the LMC30 load module converter.
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| (2) |
Delete assembler directive command ".PROTECT" and use command
option "-protect1", "-portect2", or "-protectx" of the LMC30.
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| (3) |
Delete assembler directive command ".OFSREG" and use command
option "-ofsregx" of the LMC30.
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| (4) |
Use a fixed value as a value set by an assembler directive command:
Example: Case where assembler directive command ".OFSREG" used for the R8C/Tiny series
-------------------------------------------------------------
.lword start | 0ff000000h ; The option function select register is
; set to FFH, a fixed value.
;
; ID code check function
; .id "CodeChk"
;
; option function select register
;
;.ofsreg 0FFH ; This line commented out.
------------------------------------------------------------- |
- Schedule of Fixing the Problem
We plan to fix this problem in the next release of the product.
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