Int 7A  - Novell Netware - Ipx Driver - Cancel Event                       [N]

   BX = 0006h
   ES:SI -> Event Control Block (see BX=0003h)

Return: AL = return code
       00h success
       F9h event in use
       FCh event cancelled
       FFh unsuccessful, event not in use, or unrecognized ECB flag

Notes: cannot cancel packets which the node's driver has already sent
   this function is supported by Advanced NetWare 1.02+

See Also: BX=0005h