Relative to the base indexed addressing mode
Base change in the relative addressing mode, usually the bx and bp as base registers, the si and di as index registers. It is to a base register contents of bx or bp, with si or di index register contents, plus instructions in a given 8-bit or 16-bit displacement, and a segment register as an address reference, as operand address.
When the base register for the bx, the segment register to use ds.
When the base register for the bp, the segment register is used ss. |
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