64 lines
2.8 KiB
C
64 lines
2.8 KiB
C
/*-
|
|
* Copyright (c) 1991 The Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)fdreg.h 7.1 (Berkeley) 5/9/91
|
|
*/
|
|
|
|
/*
|
|
* AT floppy controller registers and bitfields
|
|
*/
|
|
|
|
/* uses NEC765 controller */
|
|
#include "../i386/isa/ic/nec765.h"
|
|
|
|
/* registers */
|
|
#define fdout 2 /* Digital Output Register (W) */
|
|
#define FDO_FDSEL 0x01 /* floppy device select */
|
|
#define FDO_FRST 0x04 /* floppy controller reset */
|
|
#define FDO_FDMAEN 0x08 /* enable floppy DMA and Interrupt */
|
|
#define FDO_MOEN0 0x10 /* motor enable drive 0 */
|
|
#define FDO_MOEN1 0x20 /* motor enable drive 1 */
|
|
|
|
#define fdsts 4 /* NEC 765 Main Status Register (R) */
|
|
#define fddata 5 /* NEC 765 Data Register (R/W) */
|
|
|
|
#define fdctl 7 /* Control Register (W) */
|
|
#define FDC_500KBPS 0x00 /* 500KBPS MFM drive transfer rate */
|
|
#define FDC_300KBPS 0x01 /* 300KBPS MFM drive transfer rate */
|
|
#define FDC_250KBPS 0x02 /* 250KBPS MFM drive transfer rate */
|
|
#define FDC_125KBPS 0x03 /* 125KBPS FM drive transfer rate */
|
|
|
|
#define fdin 7 /* Digital Input Register (R) */
|
|
#define FDI_DCHG 0x80 /* diskette has been changed */
|
|
|
|
|