1 /* $NetBSD: fdreg.h,v 1.4 2005/12/11 12:19:37 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1991 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)fdreg.h 7.1 (Berkeley) 5/9/91 32 */ 33 34 /* 35 * x680x0 floppy controller registers and bitfields 36 */ 37 38 /* uses NEC72065 controller */ 39 #include <dev/ic/nec765reg.h> 40 41 /* registers */ 42 #define fdsts 0 /* NEC 765 Main Status Register (R) */ 43 #define fddata 1 /* NEC 765 Data Register (R/W) */ 44 #define fdout 2 /* Digital Output Register (W) */ 45 #define fdctl 3 /* Control Register (W) */ 46 #define FDC_500KBPS 0x00 /* 500KBPS MFM drive transfer rate */ 47 #define FDC_300KBPS 0x01 /* 300KBPS MFM drive transfer rate */ 48 #define FDC_250KBPS 0x02 /* 250KBPS MFM drive transfer rate */ 49 #define FDC_125KBPS 0x03 /* 125KBPS FM drive transfer rate */ 50 51 #define FDC_BSIZE 512 52 #define FDC_MAXIOSIZE MAXBSIZE 53 54 /* Floppy disk controller command bytes. */ 55 #define NE7CMD_RESET 0x36 /* reset command for fdc */ 56 57 /* default attach args */ 58 #define FDC_ADDR 0xe94000 /* builtin fdc is here */ 59 #define FDC_INTR 96 /* interrupt vector */ 60 #define FDC_DMA 0 /* DMA ch# */ 61 #define FDC_DMAINTR 100 /* DMA interrupt vector */ 62