Int 61 Fn 0001  - Banyan Vines - Internal Vines Socket Api (near Data)     [N]

   AX = 0001h
   DS = 0001h (to distinguish from alternate AX=0001h socket interface)
   CX:BX -> internal communications control block (see #2995)
   DX = caller's data segment

Return: AX = status
       0000h successful
       0099h invalid operation
       00A5h resource not available
Desc:  StreetTalk access with session handles
Range: INT 60 to INT 66

Notes: This service is handled by the adapter driver
   The request dispatch table contains dummy entries for subfunctions
     06h, 0Dh, 0Eh, 0Fh, 10h, and 11h, which always return error 0099h
     (invalid operation) in the request block's result buffer
   in recent VINES releases, this interface is superseded by the AX=000Fh
     interface, which allows FAR parameter block pointers (refer to that
     function's entries for more details on individual subfunctions)
   some adapter drivers (e.g. the NDIS2 token ring driver NDTOKBAN for
     VINES 5.53) ignore the value in CX and use the value from DX instead

See Also: AX=000Fh

Format of internal communications control block:
Offset Size    Description (Table 2995)
 00h   WORD    subfunction number
 02h   WORD    magic number (FEFEh)
 04h   WORD    (ret) result, should be set to 0 before calling
 06h   WORD    reserved (will be set to client DS)
 08h   WORD    caller's code segment if function 000Bh, 0 else
 0Ah   WORD    pointer to parameter block
 0Ch   WORD    reserved (segment of parameter block; will be set to client DS)
 0Eh   WORD    StreetTalk handle

See Also: #2994,#3115 at INT 61/AX=000Fh