This content has not been validated; it was AI-generated following the x86-64 ISA Documentation generation process to maintain high quality. However, as no human has verified this data, errors may exist. If the accuracy of this data is critical, please consult the Intel SDM. The model used to generate this is gemma4:31b
PABSB
PABSB (Page Attribute Table Select Byte) updates the Page Attribute Table (PAT) by selecting a byte from a specified memory location and loading it into the PAT register.
The table after the description covers what the source and destinations can be.
| source | destination(s) |
|---|---|
| m1 | PAT Register |
| reg | #I |
| imm | #I |
DO NOT support LOCK
This instruction is ONLY available in 64-bit mode. It is NOT supported in compatibility mode or 32-bit protected mode.
To avoid unexpected memory typing behavior, the source address MUST be aligned to the architectural requirements of the memory type being accessed. Failure to provide a valid memory operand will result in an invalid operation.