String constants used in expressions are converted to a concatenated sequence of right-aligned ASCII bytes. String constants for the Freescale DSP processor are limited to four characters; subsequent characters are ignored by the assembler. You may use the DC and DCB directives to define strings longer than 4 bytes. The table below lists some examples.
| Expression | String | Bytes |
|---|---|---|
| 'ABCD' | ABCD | $41424344 |
| '"79' | "79 | $00273739 |
| '' | null string | $00000000 |
| 'abcdef' | abcd | $61626364 |