107 lines
3 KiB
C
107 lines
3 KiB
C
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/***************************************************************************/
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/* */
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/* */
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/* IPX Network Communication Driver for Greed */
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/* Copyright (C) 1995 by Channel 7 */
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/* */
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/* written by Robert Morgan */
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/* */
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/***************************************************************************/
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#include "greednet.h"
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/**** CONSTANTS ****/
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#define MAXPACKETS 31 // max outstanding packets before loss
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/**** TYPES ****/
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#pragma option -a-
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// setupdata_t is used as greeddata_t during setup
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typedef struct
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{
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short nodesfound;
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short nodeswanted;
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} setupdata_t;
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typedef unsigned char byte;
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typedef unsigned short word;
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typedef struct IPXPacketStructure
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{
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word PacketCheckSum; /* high-low */
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word PacketLength; /* high-low */
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byte PacketTransportControl;
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byte PacketType;
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byte dNetwork[4]; /* high-low */
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byte dNode[6]; /* high-low */
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byte dSocket[2]; /* high-low */
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byte sNetwork[4]; /* high-low */
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byte sNode[6]; /* high-low */
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byte sSocket[2]; /* high-low */
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} IPXPacket;
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typedef struct
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{
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byte network[4]; /* high-low */
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byte node[6]; /* high-low */
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} localadr_t;
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typedef struct
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{
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byte node[6]; /* high-low */
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} nodeadr_t;
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typedef struct ECBStructure
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{
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word Link[2]; /* offset-segment */
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word ESRAddress[2]; /* offset-segment */
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byte InUseFlag;
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byte CompletionCode;
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word ECBSocket; /* high-low */
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byte IPXWorkspace[4]; /* N/A */
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byte DriverWorkspace[12]; /* N/A */
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byte ImmediateAddress[6]; /* high-low */
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word FragmentCount; /* low-high */
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word fAddress[2]; /* offset-segment */
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word fSize; /* low-high */
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word fAddress2[2];
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word fSize2;
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} ECB;
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// time is used by the communication driver to sequence packets returned
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// to greed when more than one is waiting
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typedef struct
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{
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ECB ecb;
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IPXPacket ipx;
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long time;
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char data[DATALENGTH];
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} packet_t;
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#pragma option -a
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/**** VARIABLES ****/
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extern greedcom_t greedcom;
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extern nodeadr_t nodeadr[MAXPLAYERS+1];
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extern int localnodenum, socketid, numpackets;
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extern long localt, remotet; // timestamp of last packet received
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extern nodeadr_t remoteadr;
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/**** FUNCTIONS ****/
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void MS_Error(char *error, ...);
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int MS_CheckParm(char *check);
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void interrupt IPX_NetISR(void);
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void IPX_InitNetwork(void);
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void IPX_ShutdownNetwork(void);
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void IPX_SendPacket(int destination);
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int IPX_GetPacket(void);
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