projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 15637ed4 RG |
1 | /*- |
| 2 | * Copyright (c) 1991 The Regents of the University of California. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * Redistribution and use in source and binary forms, with or without | |
| 6 | * modification, are permitted provided that the following conditions | |
| 7 | * are met: | |
| 8 | * 1. Redistributions of source code must retain the above copyright | |
| 9 | * notice, this list of conditions and the following disclaimer. | |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 | * notice, this list of conditions and the following disclaimer in the | |
| 12 | * documentation and/or other materials provided with the distribution. | |
| 13 | * 3. All advertising materials mentioning features or use of this software | |
| 14 | * must display the following acknowledgement: | |
| 15 | * This product includes software developed by the University of | |
| 16 | * California, Berkeley and its contributors. | |
| 17 | * 4. Neither the name of the University nor the names of its contributors | |
| 18 | * may be used to endorse or promote products derived from this software | |
| 19 | * without specific prior written permission. | |
| 20 | * | |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 31 | * SUCH DAMAGE. | |
| 32 | * | |
| 78ed81a3 | 33 | * from: @(#)nec765.h 7.1 (Berkeley) 5/9/91 |
| 34 | * $Id$ | |
| 15637ed4 RG |
35 | */ |
| 36 | ||
| 37 | /* | |
| 38 | * Nec 765 floppy disc controller definitions | |
| 39 | */ | |
| 40 | ||
| 41 | /* Main status register */ | |
| 42 | #define NE7_DAB 0x01 /* Diskette drive A is seeking, thus busy */ | |
| 43 | #define NE7_DBB 0x02 /* Diskette drive B is seeking, thus busy */ | |
| 44 | #define NE7_CB 0x10 /* Diskette Controller Busy */ | |
| 45 | #define NE7_NDM 0x20 /* Diskette Controller in Non Dma Mode */ | |
| 46 | #define NE7_DIO 0x40 /* Diskette Controller Data register I/O */ | |
| 47 | #define NE7_RQM 0x80 /* Diskette Controller ReQuest for Master */ | |
| 48 | ||
| 49 | /* Status register ST0 */ | |
| 50 | #define NE7_ST0BITS "\020\010invld\007abnrml\006seek_cmplt\005drv_chck\004drive_rdy\003top_head" | |
| 51 | ||
| 52 | /* Status register ST1 */ | |
| 53 | #define NE7_ST1BITS "\020\010end_of_cyl\006bad_crc\005data_overrun\003sec_not_fnd\002write_protect\001no_am" | |
| 54 | ||
| 55 | /* Status register ST2 */ | |
| 56 | #define NE7_ST2BITS "\020\007ctrl_mrk\006bad_crc\005wrong_cyl\004scn_eq\003scn_not_fnd\002bad_cyl\001no_dam" | |
| 57 | ||
| 58 | /* Status register ST3 */ | |
| 59 | #define NE7_ST3BITS "\020\010fault\007write_protect\006drdy\005tk0\004two_side\003side_sel\002" | |
| 60 | ||
| 61 | /* Commands */ | |
| 62 | #define NE7CMD_SPECIFY 3 /* specify drive parameters - requires unit | |
| 63 | parameters byte */ | |
| 64 | #define NE7CMD_SENSED 4 /* sense drive - requires unit select byte */ | |
| 65 | #define NE7CMD_WRITE 0xc5 /* write - requires eight additional bytes */ | |
| 66 | #define NE7CMD_READ 0xe6 /* read - requires eight additional bytes */ | |
| 67 | #define NE7CMD_FORMAT 0x4c /* format - requires five additional bytes */ | |
| 68 | #define NE7CMD_RECAL 7 /* recalibrate drive - requires | |
| 69 | unit select byte */ | |
| 70 | #define NE7CMD_SENSEI 8 /* sense controller interrupt status */ | |
| 71 | #define NE7CMD_SEEK 15 /* seek drive - requires unit select byte | |
| 72 | and new cyl byte */ |