INT 21 - TopWare Network OS v5.10+ - INITIATE ACCESS TO SPECIFIC PACKET TYPE AX = FFE3h DL = 00h BX = packet type for Ethernet header (IP(Internet Protocol) The lower level (transport layer) of the TCP/IP protocol suite. See also TCP, TCP/IP. = 0800h, ARP = 0806h, etc.) ES:DI -> receive routine (see #02542) Return: CF clear if successful AX = handle number CF set on error DH = error code (03h,05h,09h,0Ah,11h) (see #02541) SeeAlso: AX=FFE3h/DL=01h (Table 02541) Values for TopWare error code: 01h invalid handle 03h no interfaces of the specified type found 05h bad packet type 09h insufficient space 0Ah type already being accessed 0Ch unable to send packet (usually hardware error) 11h invalid function (Table 02542) Values TopWare receive routine is called with: AX = function 0000h request packet buffer CX = packet size Return: ES:DI -> buffer or 0000h:0000h to discard packet 0001h packet copied CX = packet size DS:SI -> copied packet (same as returned ES:DI above)