Echelon Neuron - Manual (Page 164)

RADIX (Default Radix)
The RADIX directive sets the default radix (numeric base) used for constant
numeric expressions until another RADIX directive is encountered. The default
radix is DECIMAL.
However, if you include assembly source files into applications that are written in
Neuron C using the Neuron C compiler’s #pragma include_assembly_file
directive, the Neuron C compiler always sets the default radix to HEX, and an
included assembly file cannot change the Neuron C compiler’s default radix.
Recommendation: Because the Neuron Assembler does not provide a method
to save and restore the current default radix, and because an included file might
change the default radix, use the RADIX directive only when necessary.
Literal constants without a radix must begin with a numeric digit. For example,
if the default radix setting is hexadecimal (HEX), you must specify a leading zero
if the first non-zero digit of the hexadecimal constant is alphabetic. That is,
specify h’0abc rather than h’abc.
Syntax:
The RADIX directive requires an argument for the radix name. This directive
cannot have a label.
RADIX BINARY
RADIX OCTAL
RADIX DECIMAL
RADIX HEX
The radix name can be specified in either lower or upper case.
154 Neuron Assembler Directives