Non-volatile memory Configuration PC SC APDU interpreter

September 3, 2025 at 8:35 AM

Class of the embedded APDU interpreter

Address : 02BF (bank 2, register BF)

Size : 1 byte

Type : BYTE

Default : FF

Description

A PC/SC reader features an APDU interpreter to expose wired-logic, memory-only cards as if they were compliant with ISO/IEC 7816-4.

The PC/SC specification mandates that the interpreter handles C-APDU coming with CLA=FF.

This register allows to change this value. Setting it to 00 totally disables the product’s embedded APDU interpreter.