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DSD Assembler Statement

label:〛 DSD expression

The DSD statement reserves the specified number of 32-bit double words in the current memory space. label is a symbol that is assigned the current memory address. expression is the number of words to reserve.

This statement reserves space and increments the location counter by the number of bytes reserved.


  • The A251 Assembler is a two-pass assembler. Symbols are defined and the length of each instruction is determined in the first pass. In the second pass, forward references are resolved and object code is produced. The expression used with the DSD statement may not include forward references.
See Also


COUNT:  DSB      10
TIME:   DSB      8
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