INT 21 - LANtastic - GET USERNAME ENTRY AX = 5F83h BX = login entry index (0-based) ES:DI -> 16-byte buffer for username currently logged into Return: CF clear if successful DL = adapter number (v3+) CF set on error AX = error code Note: the login entry index corresponds to the value BX used in AX=5F80h SeeAlso: AX=5F80h