1 /* @(#)if_ddnreg.h 7.1 (Berkeley) 06/05/86 */ 2 3 4 /************************************************************************\ 5 6 ________________________________________________________ 7 / \ 8 | AAA CCCCCCCCCCCCCC CCCCCCCCCCCCCC | 9 | AAAAA CCCCCCCCCCCCCCCC CCCCCCCCCCCCCCCC | 10 | AAAAAAA CCCCCCCCCCCCCCCCC CCCCCCCCCCCCCCCCC | 11 | AAAA AAAA CCCC CCCC | 12 | AAAA AAAA CCCC CCCC | 13 | AAAA AAAA CCCC CCCC | 14 | AAAA AAAA CCCC CCCC | 15 | AAAA AAAAAAAAAAA CCCCCCCCCCCCCCCCC CCCCCCCCCCCCCCCCC | 16 | AAAA AAAAAAAAAAA CCCCCCCCCCCCCCCC CCCCCCCCCCCCCCCC | 17 | AAAA AAAAAAAAA CCCCCCCCCCCCCC CCCCCCCCCCCCCC | 18 \________________________________________________________/ 19 20 Copyright (c) 1985 by Advanced Computer Communications 21 720 Santa Barbara Street, Santa Barbara, California 93101 22 (805) 963-9431 23 24 This software may be duplicated and used on systems 25 which are licensed to run U.C. Berkeley versions of 26 the UNIX operating system. Any duplication of any 27 part of this software must include a copy of ACC's 28 copyright notice. 29 30 31 File: 32 if_ddnreg.h 33 34 Author: 35 Art Berggreen 36 37 Project: 38 4.2 DDN X.25 network driver 39 40 Function: 41 This file contains definitions of the hardware 42 interface of the ACP625 (IF-11/X25). 43 44 Components: 45 46 Revision History: 47 16-May-1985: V1.0 - First release. 48 Art Berggreen. 49 50 \************************************************************************/ 51 52 53 /* if_ddnvar.h V1.0 5/16/85 */ 54 55 /* 56 * ACC IF-11/DDN-X25 interface 57 */ 58 59 struct ddnregs { /* device registers */ 60 u_short csr; /* control and status register */ 61 u_char iochn; /* logical channel */ 62 u_char ioadx; /* address extension (A16,A17) */ 63 u_short ioadl; /* buffer address (A0-A15) */ 64 u_short iocnt; /* byte count */ 65 u_char iofcn; /* UMC funciton code */ 66 u_char iosbf; /* UMC subfunction code */ 67 u_char ioini; /* comm regs valid flag */ 68 u_char staack; /* interrupt acknowledge flag */ 69 u_char ionmi; /* NMI routine active flag */ 70 u_char xfrgnt; /* UMR transfer grant flag */ 71 u_char stachn; /* interrupt channel number */ 72 u_char statyp; /* interrupt type code */ 73 u_char stacc; /* completion function code */ 74 u_char stacs; /* completion subfunction code */ 75 u_short stacnt; /* completion byte count */ 76 }; 77 78 #define iovect iochn 79 80 /* defines for CSR */ 81 82 #define DDN_UER 0100000 /* UMC error condition */ 83 #define DDN_NXM 0040000 /* non-existent memory error */ 84 #define DDN_PER 0020000 /* UNIBUS parity error */ 85 #define DDN_ZRUN 0010000 /* Z80 running */ 86 #define DDN_ZGO 0004000 /* Z80 not in wait state */ 87 #define DDN_MBLK 0000200 /* memory swap state (0=main, 1=srv) */ 88 #define DDN_SRV 0000100 /* select UMC service memory */ 89 #define DDN_MAIN 0000040 /* select UMC main memory */ 90 #define DDN_DMA 0000020 /* DMA enable */ 91 #define DDN_WRT 0000010 /* DMA write enable */ 92 #define DDN_IEN 0000004 /* interrupt enable */ 93 #define DDN_RST 0000002 /* reset */ 94 #define DDN_NMI 0000001 /* cause NMI */ 95 96 #define DDN_BITS \ 97 "\10\20UER\17NXM\16PER\15ZRUN\14ZGO\10MBLK\7SRV\6MAIN\5DMA\4WRT\3IEN\2RST\1NMI" 98 99 /* start i/o function code definitions */ 100 101 #define DDNWRT 0 /* write to if-11 */ 102 #define DDNRDB 1 /* read from if-11 */ 103 #define DDNSTR 2 /* stream flag */ 104 #define DDNEOS (4|DDNSTR) /* end of stream flag */ 105 #define DDNABT 8 /* abort flag */ 106 #define DDNUMR 16 /* UMR protocol flag */ 107 108 /* interrupt type definitions */ 109 110 #define DDNSACK 0 /* start i/o ack */ 111 #define DDNDONE 1 /* i/o completion */ 112 #define DDNXREQ 2 /* UMR protocol transfer request */ 113 114 /* i/o completion codes */ 115 116 #define DDNIOCOK 0001 /* successful completion */ 117 #define DDNIOCOKP 0002 /* successful completion, more data pending */ 118 #define DDNIOCABT 0361 /* i/o aborted */ 119 #define DDNIOCERR 0321 /* program error */ 120 #define DDNIOCOVR 0363 /* overrun error */ 121 #define DDNIOCUBE 0374 /* non-existant memory or unibus error */ 122 123 /* UMR protocol transfer grant code definitions */ 124 125 #define DDNXEVN 1 /* start with even address */ 126 #define DDNXODD 2 /* start with odd address */ 127 #define DDNNUMR 4 /* non-UMR transfer */ 128 #define DDNXABT 8 /* abort transfer */ 129