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MESC TOOL NEWS:
MESCT-AS308-991001D
Please take note of the following problems in using assembler AS308 for the M16C/80 series of microcomputers.
- Versions Concerned
All the versions of the AS308 product, as well as those of AS308 included with C compiler NC308WA for the M16C/80 series MCUs.
- Problem on as308
- 2.1 Description
- When command option "-mode60" or "-mode60p" is chosen, execution of bit manipulation instructions described in accordance with the M16C/60 series instruction results in incorrect code being generated (in address register indirect and address register relative addressing modes)
- Examples of descriptions of an instruction that cause errors:
- BSET [A0] ; In address register indirect addressing mode
- BSET base[A0] ; In address register relative addressing mode
- 2.2 Workaround
- For the bit manipulation instructions involved in the problem, modify descriptions of the instruction as follows:
-
| Descriptions Causing Errors | Modifications |
| BSET [A0] | BITINDEX.B/W A0
BSET 0,0 |
| BSET base[A0] | BITINDEX.B/W A0
BSET 0,base |
- Note : For the operation of the BITINDEX instruction, refer to the "Indexed Instructions (10)" section in the M16C/80 series software manual.
AS308 Precaution
MESCT-AS308-991001D
- Problem on ln308
- 3.1 Description
- Even if the same label or symbol name is defined as "external" in more than one file, double definition errors do not occur in ln308.
- 3.2 Workaround
- Ensure that the same label or symbol name is not double-defined in more than one file.
- Schedule of Fixing Problem
We plan to fix this problem in our next release.
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