aas

ASCII Adjust After Subtraction

AAS

Adjusts AL after subtraction for unpacked BCD.

Details

The ASCII Adjust After Subtraction instruction adjusts AL after subtraction for unpacked BCD.

Pseudocode Operation

// Adjusts AL after subtraction for unpacked BCD

Example

AAS

Encoding

Binary Layout
3F
+0
 
Format Legacy
Opcode 3F
Extension Base (Legacy)

Operands