INT 2F - NETWORK - GET NETWORK EVENT POSTsee Power-On Self-Test HANDLER
AX = B803h
Return: ES:BX -> current event post handler (see AX=B804h)
Note: this function is supported by PCIBM PC LAN Program, 10NET v5.0,
NetSoft DOS-NET v1.20+
SeeAlso: AX=B800h,AX=B804h,AX=B903h