projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| da7c5cc6 | 1 | /* |
| 0880b18e | 2 | * Copyright (c) 1982, 1986 Regents of the University of California. |
| da7c5cc6 KM |
3 | * All rights reserved. The Berkeley software License Agreement |
| 4 | * specifies the terms and conditions for redistribution. | |
| 5 | * | |
| 95f51977 | 6 | * @(#)dhreg.h 7.1 (Berkeley) 6/5/86 |
| da7c5cc6 | 7 | */ |
| b55983ff SL |
8 | |
| 9 | /* | |
| 10 | * DH-11 device register definitions. | |
| 11 | */ | |
| 12 | struct dhdevice { | |
| 13 | union { | |
| 14 | short dhcsr; /* control-status register */ | |
| 15 | char dhcsrl; /* low byte for line select */ | |
| 16 | } un; | |
| 17 | short dhrcr; /* receive character register */ | |
| 18 | short dhlpr; /* line parameter register */ | |
| 19 | u_short dhcar; /* current address register */ | |
| 20 | short dhbcr; /* byte count register */ | |
| 21 | u_short dhbar; /* buffer active register */ | |
| 22 | short dhbreak; /* break control register */ | |
| 23 | short dhsilo; /* silo status register */ | |
| 24 | }; | |
| 25 | ||
| 26 | /* Bits in dhcsr */ | |
| 27 | #define DH_TI 0100000 /* transmit interrupt */ | |
| 28 | #define DH_SI 0040000 /* storage interrupt */ | |
| 29 | #define DH_TIE 0020000 /* transmit interrupt enable */ | |
| 30 | #define DH_SIE 0010000 /* storage interrupt enable */ | |
| 31 | #define DH_MC 0004000 /* master clear */ | |
| 32 | #define DH_NXM 0002000 /* non-existant memory */ | |
| 33 | #define DH_MM 0001000 /* maintenance mode */ | |
| 34 | #define DH_CNI 0000400 /* clear non-existant memory interrupt */ | |
| 35 | #define DH_RI 0000200 /* receiver interrupt */ | |
| 36 | #define DH_RIE 0000100 /* receiver interrupt enable */ | |
| 37 | ||
| 38 | /* Bits in dhlpr */ | |
| 39 | #define BITS6 01 | |
| 40 | #define BITS7 02 | |
| 41 | #define BITS8 03 | |
| 42 | #define TWOSB 04 | |
| 43 | #define PENABLE 020 | |
| 44 | /* DEC manuals incorrectly say this bit causes generation of even parity. */ | |
| 45 | #define OPAR 040 | |
| 46 | #define HDUPLX 040000 | |
| 47 | ||
| 48 | #define DH_IE (DH_TIE|DH_SIE|DH_RIE) | |
| 49 | ||
| 50 | /* Bits in dhrcr */ | |
| 51 | #define DH_PE 0010000 /* parity error */ | |
| 52 | #define DH_FE 0020000 /* framing error */ | |
| 53 | #define DH_DO 0040000 /* data overrun */ |