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Defines a ten-byte space and usually initializes it with a floating-point number.

Sets the origin, or starting address, for the code or data that follows the directive.

Aligns the next data item on a boundary, which can improve access speed on many systems.

Defines a quad word (typically 8 bytes) and initializes it with a value.

Used to define a symbol as a constant value, not to be allocated any memory space.

Reserves space for a block of bytes in the BSS section, typically without initialization.

Defines the end of the source code file, indicating to the assembler that it has reached the end of the file.

Used to define a section in the assembly code, typically .data, .text, or .bss for data, code, and uninitialized data respectively.

Defines a byte or string of bytes and initializes them with values.

Defines a double word (typically 4 bytes) and initializes it with a value.

Allocates space for a byte or a sequence of bytes in the memory and optionally initializes them.

Tells the assembler that the defined symbol is located in another module and not to expect its definition within the current module.

Allocates memory space for a word or a sequence of words and optionally initializes them.

Declares a symbol that can be accessed from other modules, making it global rather than local to the assembly file.