Specific conditions for determining the size of operands. (See Table A-1, Appendix A.2.5 of Vol. 2D).
Record Field | Description |
(d64) When in 64-bit mode, instruction defaults to 64-bit operand size and cannot encode 32-bit operand size.
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(f64) The operand size is forced to a 64-bit operand size when in 64-bit mode (prefixes that change operand size, e.g., 66 prefix, are ignored for this instruction in 64-bit mode).
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