Int 61 Fn 0001  - Banyan Vines - "soclose" - Close A Socket                [N]

   AX = 0001h subfn 0004h
   DS:DX -> communications control block (function 0004h)

Return: AX = status (00h-0Ah,97h) (see AX=0001h/SF=0002h)

Note:  Banyan can use any interrupt from 60h through 66h.  The Banyan
     interrupt handler is identified by the string "BANV" in the four
     bytes immediately preceding the interrupt handler

See Also: AX=0001h/SF=0001h,INT 15/AX=DE2Eh

Format of control block:
Offset Size    Description
 00h   WORD    0004h
 02h   WORD    pointer to argument block (see below)
 04h   WORD    error return code
 06h  4 BYTEs  reserved

Format of argument block:
Offset Size    Description
 00h   WORD    socket identifier