1 /* $NetBSD: fdreg.h,v 1.2 2001/05/22 03:22:50 soda Exp $ */ 2 /* $OpenBSD: fdreg.h,v 1.1.1.1 1996/06/24 09:07:19 pefo Exp $ */ 3 /* NetBSD: fdreg.h,v 1.8 1995/06/28 04:30:57 cgd Exp */ 4 5 /*- 6 * Copyright (c) 1991 The Regents of the University of California. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * @(#)fdreg.h 7.1 (Berkeley) 5/9/91 38 */ 39 40 /* 41 * AT floppy controller registers and bitfields 42 */ 43 44 /* uses NEC765 controller */ 45 #include <dev/ic/nec765reg.h> 46 47 /* registers */ 48 #define FDOUT 0 /* Digital Output Register (W) */ 49 #define FDO_FDSEL 0x03 /* floppy device select */ 50 #define FDO_FRST 0x04 /* floppy controller reset */ 51 #define FDO_FDMAEN 0x08 /* enable floppy DMA and Interrupt */ 52 #define FDO_MOEN(n) ((1 << n) * 0x10) /* motor enable */ 53 54 #define FDSTS 2 /* NEC 765 Main Status Register (R) */ 55 #define FDDATA 3 /* NEC 765 Data Register (R/W) */ 56 57 #define FDCTL 5 /* Control Register (W) */ 58 #define FDC_500KBPS 0x00 /* 500KBPS MFM drive transfer rate */ 59 #define FDC_300KBPS 0x01 /* 300KBPS MFM drive transfer rate */ 60 #define FDC_250KBPS 0x02 /* 250KBPS MFM drive transfer rate */ 61 #define FDC_125KBPS 0x03 /* 125KBPS FM drive transfer rate */ 62 63 #define FDIN 5 /* Digital Input Register (R) */ 64 #define FDI_DCHG 0x80 /* diskette has been changed */ 65 66 #define FDC_BSIZE 512 67 #if 0 68 #define FDC_NPORT 8 69 #endif 70