28. The XLATB Instruction

• Belongs to the family of x86 data transfer instructions.

• XLATB translates bytes The format is XLATB

• To use xlat instruction,

  • EBX should be loaded with the starting address of the translation table

  • AL must contain an index in to the table.

• Index value starts at zero

• The instruction

  • reads the byte at this index in the translation table, and

  • stores this value in AL.

  • The original index value in AL is lost

• Translation table can have at most 256 entries (due to AL)

• See also XLAT.ASM sample.