172 lines
4.2 KiB
C
172 lines
4.2 KiB
C
#ifndef __FLOPPY_H_LOADED
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#define __FLOPPY_H_LOADED
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/*****************************************************************************
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Copyright © 1993, 1994 Digital Equipment Corporation,
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Maynard, Massachusetts.
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted, provided
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that the copyright notice and this permission notice appear in all copies
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of software and supporting documentation, and that the name of Digital not
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be used in advertising or publicity pertaining to distribution of the software
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without specific, written prior permission. Digital grants this permission
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provided that you prominently mark, as not part of the original, any
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modifications made to this software or documentation.
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Digital Equipment Corporation disclaims all warranties and/or guarantees
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with regard to this software, including all implied warranties of fitness for
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a particular purpose and merchantability, and makes no representations
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regarding the use of, or the results of the use of, the software and
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documentation in terms of correctness, accuracy, reliability, currentness or
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otherwise; and you rely on the software, documentation and results solely at
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your own risk.
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******************************************************************************/
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/*
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* $Id: floppy.h,v 1.1.1.1 1997/10/30 23:27:15 verghese Exp $;
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*/
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/*
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* $Log: floppy.h,v $
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* Revision 1.1.1.1 1997/10/30 23:27:15 verghese
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* current 10/29/97
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*
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* Revision 1.5 1994/08/05 20:13:47 fdh
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* Updated Copyright header and RCS $Id: identifier.
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*
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* Revision 1.4 1994/06/22 15:22:35 rusling
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* Fixed up minor OSF build problem. Changed fdacmd()
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* definition.
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*
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* Revision 1.3 1994/06/20 14:18:59 fdh
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* Fixup header file preprocessor #include conditionals.
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*
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* Revision 1.2 1994/06/17 19:34:01 fdh
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* Clean-up...
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*
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* Revision 1.1 1993/06/08 19:56:13 fdh
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* Initial revision
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*
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*/
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#define TRUE 1
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#define FALSE 0
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#define REALFLOPPY 1
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/* pic */
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#define PICBOCW 0x20
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#define PICBIRR 0x20
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#define READIRR 0x0A
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#define FDAMASK 0x40
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/* dma */
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#define DMACMD03 0x08
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#define DMACMD47 0xD0
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#define DMAMODE03 0x0B
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#define DMAMODE47 0xD6
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#define DMAXMODE03 0x40B
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#define DMAXMODE47 0x4D6
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#define DMAOFFS 0x04
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#define DMALPAG 0x81
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#define DMAHPAG 0x481
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#define DMACNT 0x05
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#define DMAHCNT 0x405
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#define DMACBP 0x0C
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#define DMAMASK03 0x0A
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#define DMAMASK47 0xD4
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/* fda */
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#define FDADCR 0x03F2
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#define FDAMSR 0x03F4
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#define FDADR 0x03F5
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#define FDADRR 0x03F7
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#define FDADCB 0x03F7
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/* dcr */
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#define DCRSELA 0x00
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#define DCRSELB 0x01
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#define DCRSELC 0x02
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#define DCRSELD 0x03
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#define DCRNRES 0x04
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#define DCRENAB 0x08
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#define DCRMTRA 0x10
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#define DCRMTRB 0x20
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#define DCRMTRC 0x40
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#define DCRMTRD 0x80
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/* msr */
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#define MSRDIO 0x40
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#define MSRRQM 0x80
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/* drr */
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#define DRR500 0x00
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#define DRR250 0x02
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/* dcb */
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#define DCBNCHG 0x80
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/* st0 */
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#define ST0IC 0xC0
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#define ST0NT 0x00
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#define ST0NR 0x08
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/* st1 */
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#define ST1NW 0x02
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/* cmd */
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#define NREAD 0x66
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#define NWRITE 0x45
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#define NRECAL 0x07
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#define NSEEK 0x0F
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#define NSINTS 0x08
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#define NSPEC 0x03
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#define FDTOMEM 0
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#define MEMTOFD 1
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#define NCMD 9
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#define NSTS 7
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#define UNITNUM 0
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#define UNITSEL (DCRSELA)
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#define UNITMTR (DCRMTRA)
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#define lSRT 0xE0 /* 4 mS */
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#define lHUT 0x08 /* 256 mS */
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#define hSRT 0xC0 /* 4 mS */
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#define hHUT 0x0F /* 256 mS */
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#define HLT 0x02 /* 4 mS */
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#define ND 0x00 /* Use DMA */
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int fdactrk;
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static void read_sector(int sec , int loc);
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static int get_file_info(char * file2load , int flag);
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static void prep_filename(ub * fn , ub * nfn , ub * ext);
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static int get_boot_info(void );
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static void load_file(void );
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static int get_sec(int gcluster);
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static int get_next_cluster(ui gcluster , ui ifat);
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static void fdainit(int rate);
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static void fdaspinup(void );
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static void fdaspindown(void );
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static int fdaio(char * buf , int sec , int type);
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static void fdacmd(unsigned char cmd[] , int ncmd);
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static int fdasts(void );
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static void fdawait(void );
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static void fdasleep(int nmsec);
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static void init_pic(void );
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#define fdREAD 0 /* read command */
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#define fdWRITE 1 /* write command */
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#endif /* __FLOPPY_H_LOADED */
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