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1.1 root 1: /* @(#)if_ddnreg.h 7.1 (Berkeley) 6/5/86 */
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 */
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