1 /****************************************************************************
3 ******* P A C K E T H E A D E R F I L E
5 ****************************************************************************
7 Author : Ian Nandhra / Jeremy Rolls
11 * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK.
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
31 ----------------------------------------------------------------------------
33 ----------------------------------------------------------------------------
35 ***************************************************************************/
43 /* static char *_rio_pkt_h_sccs = "@(#)pkt.h 1.8"; */
48 #define PKT_CMD_BIT ((ushort) 0x080)
49 #define PKT_CMD_DATA ((ushort) 0x080)
51 #define PKT_ACK ((ushort) 0x040)
53 #define PKT_TGL ((ushort) 0x020)
55 #define PKT_LEN_MASK ((ushort) 0x07f)
57 #define DATA_WNDW ((ushort) 0x10)
58 #define PKT_TTL_MASK ((ushort) 0x0f)
60 #define PKT_MAX_DATA_LEN 72
62 #define PKT_LENGTH sizeof(struct PKT)
63 #define SYNC_PKT_LENGTH (PKT_LENGTH + 4)
65 #define CONTROL_PKT_LEN_MASK PKT_LEN_MASK
66 #define CONTROL_PKT_CMD_BIT PKT_CMD_BIT
67 #define CONTROL_PKT_ACK (PKT_ACK << 8)
68 #define CONTROL_PKT_TGL (PKT_TGL << 8)
69 #define CONTROL_PKT_TTL_MASK (PKT_TTL_MASK << 8)
70 #define CONTROL_DATA_WNDW (DATA_WNDW << 8)
74 BYTE dest_unit; /* Destination Unit Id */
75 BYTE dest_port; /* Destination POrt */
76 BYTE src_unit; /* Source Unit Id */
77 BYTE src_port; /* Source POrt */
80 ushort destination; /* Complete destination */
82 unsigned char unit; /* Destination unit */
83 unsigned char port; /* Destination port */
87 ushort source; /* Complete source */
89 unsigned char unit; /* Source unit */
90 unsigned char port; /* Source port */
102 unsigned char control;
106 BYTE data[PKT_MAX_DATA_LEN];
107 /* Actual data :-) */
108 WORD csum; /* C-SUM */
112 /*********** end of file ***********/