DC

Define constant.

[ label] DCarg[,arg,...,arg]

The DC directive allocates and initializes a word of memory for each arg argument. The arg may be a numeric constant, a single- or multiple-character string constant, a symbol, or an expression. The DC directive may have one or more arguments separated by commas. Multiple arguments are stored in successive address locations. If multiple arguments are present, one or more of them can be null (two adjacent commas), in which case the corresponding address location is filled with zeros.

If label is present, it assigns the value of the runtime location counter at the start of the directive processing.

Integer arguments are stored as is; floating-point numbers are converted to binary values. Single- and multiple-character strings are handled in the following manner:

• Single-character strings are stored in a word whose lower seven bits represent the ASCII value of the character.
• Multiple-character strings represent words whose bytes are composed of concatenated sequences of the ASCII representation of the characters in the string (unless the NOPS option is specified; see the OPT directive). If the number of characters is not an even multiple of the number of bytes per DSP word, then the last word has the remaining characters left-aligned and the rest of the word is zero-filled. If the NOPS option is given, each character in the string is stored in a word whose lower seven bits represent the ASCII value of the character.

TABLE DC 1426,253,$2662,'ABCD'

CHARS DC 'A','B','C','D'

BSC

DCB

DWARF Symbolics