UM0144 datasheet(76/92 Pages) STMICROELECTRONICS

76 / 92 page

ST7 Assembler Linker

76/92

UM0144

A.59

WORD

A.60

WORDS

Purpose:

Define word in object code.

Format:

WORD <exp>[, <exp>...]

Description:

This directive forces the word(s) in its argument list into the object code at the cur-

rent address. The arguments may be composed of complex expressions that may

even include external labels. If the argument was an expression and had a value

greater than FFFF then the lower 16 bits of the expression are used and no errors

are generated. WORD sends the words with the least significant byte first.

It's generally used for defining data tables. Synonymous with DC.W.

Example:

See Also:

DC.B, BYTE, STRING, DC.W, LONG, DC.L

Purpose:

Default new label length word.

Format:

WORDS

Description:

When a label is defined, four SEPARATE attributes are defined with its scope (inter-

nal or external defined) value (actual numerical value of the label) relativity (the label

is ABSOLUTE or RELATIVE), and lastly length (BYTE, WORD, or LONG).

All these attributes except length are defined explicitly before or at the definition: you

can force the label to be of a certain length by giving a dot suffix, e.g. 'label.b' forces

it to byte length.

You may also define a default state for label length: the label is created to this length

unless otherwise forced with a suffix. The default is set to WORD at the start of the

assembly, but may be CHANGED by BYTES, WORDS or LONGS to the appropriate

length.

Example:

UM0144 bảng dữ liệu(PDF) 76 Page - STMicroelectronics