Release notes for the IAR Assembler for Renesas 78K

From version 4.70 and onwards, structured assembly directives are no longer supported.
Please read the IAR Assembler Reference Guide for 78K for detailed information about this product part.

Value assignment directives
Clarification regarding the DEFINE directive; symbols defined with DEFINE cannot be redefined within the same file. Also, the expression assigned to the defined symbol must be a constant.
Assembler directives
Although it is documentetd, the DS64 directive is not implemented. Because there is no 64-bit data type defined for the 78K microcontrollers, it is not useful. [EW22575]

To assemble with the 78K0R Assembler a source file written for 78K0/78K0S which makes use of the SADDR directive, the file must first be converted. This conversion can be performed with the supplied tool 78KASC.EXE located in the 78k/bin directory.

2014-04-23 V4.80.2

Program corrections

Instructions of the type BR 100 and BR $+100 are regarded as equal instead of one absolute address and one relative address when placed in an ASEG type of segment with a known start address. [EW24018]

2012-11-01 V4.80.1

2011-07-04 V4.71.1

Program corrections

An inline assembler statement that use a far absolute code address no longer generate incorrect code if an earlier instruction had accessed a non-absolute near address. [EW22037]

2010-06-20 V4.70.1

New features

A new option, --generate_far_runtime_library_calls, has been added to generate __far runtime library calls.

2009-07-01 V4.62.1

An illegal operation code is no longer generated if an SFR symbol is defined after the symbol is first used. [EW20822]
The illegal instruction MOVW AX,[BC] is no longer accepted by the assembler. [EW20820]

2008-12-15 V4.61A

Using an invalid operand in a branch instruction caused a fatal error after the correctly generated assembler error message Ab004 for 78K0R. [EW20296]
The 78K0R assembler accepted illegal mov instructions from other registers than A (mov <register1>, <register2>). [EW20188]

2008-07-02 V4.60A

The 78K0R Assembler now handles the syntax check for the XCH instruction correctly. [EW19140]
An assembler DEFINE to an external symbol no longer causes the linker to generate errors like "External index out of range in module ...". [EW18111]
The 78K0R Assembler now sets the runtime model attribute __core to 78k0r, to avoid linking problems with assembler files only.
In case of using an SFR symbol name or absolute SFR address for a MOV <register> instruction where register was unequal register A, the assembler generated wrong opcodes. [EW19969]
An error in the 78K assembler caused an internal error in the compiler for the instructions ADD, ADDC, SUB, SUBC, AND, OR, XOR and CMP. When the first parameter was register A and the second parameter an SFR address above the saddr memory area, the SFR address was treated as a saddr address. [EW20058]

2007-05-11 V4.50A

The XCH r,A instruction generated an incorrect operation code instead of an error message. [EW18797]

2006-07-07 V4.40A

The DBNZ instruction was not implemented correctly which could lead to a linker range error. [EW18725]

2005-07-15 V4.30A

Save/Restore of structured assembly character pointers could be destroyed in macro definitions. [EW16874]
When using conditional assembly, compile errors could appear as operands sometimes lost their short address information. [EW16724]
The LIMIT directive was not recognized by the assembler. [EW16676]
Variable names ending with any of the reserved words by, to, downto or step, made the assembler generate the error Invalid syntax. [EW16593]
The assembler expression solver crashed when too many Undefined symbol errors were generated. [EW16590]
A problem where the assembler in-correctly handled the usage of an elseif statement in a conditional directive that was nestled in another conditional directive, has been corrected. [EW16375]
A conditional directive like ELSE or ENDR immediately followed by an assembler comment, was ignored. [EW16228]
An Internal error was generated for a SET directive followed by a DEFINE directive for the same label. [EW16116]

2004-10-26 V4.20A

2004-05-14 V4.11A

Release notes for IAR Assembler for Renesas 78K version 4.81.1