Int F1 - Common Isdn Api (capi) V2.0 - "capi_get_serial_number" [-]
AL = F2h
AH = CAPI version number * 10 (14h for v2.0)
ES:BX -> 64-byte buffer for CAPI serial number
Return: ES:BX buffer filled with ASCIZ serial number (seven digits), empty
string if no serial number
Notes: the caller is required to provide at least 512 bytes of stack space
See Also: AH=F2h,INT F1/AL=01h,INT F1/AL=F0h,INT F1/AL=F1h,INT F1/AL=F3h