Import changeset

1 files changed, 171 insertions, 0 deletions

diff --git a/system/alpha/h/floppy.h b/system/alpha/h/floppy.h
new file mode 100644
index 000000000..4c3ac023c
--- /dev/null
+++ b/system/alpha/h/floppy.h
@@ -0,0 +1,171 @@
+#ifndef __FLOPPY_H_LOADED
+#define __FLOPPY_H_LOADED
+/*****************************************************************************
+
+       Copyright © 1993, 1994 Digital Equipment Corporation,
+                       Maynard, Massachusetts.
+
+                        All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted, provided
+that the copyright notice and this permission notice appear in all copies
+of software and supporting documentation, and that the name of Digital not
+be used in advertising or publicity pertaining to distribution of the software
+without specific, written prior permission. Digital grants this permission
+provided that you prominently mark, as not part of the original, any
+modifications made to this software or documentation.
+
+Digital Equipment Corporation disclaims all warranties and/or guarantees
+with regard to this software, including all implied warranties of fitness for
+a particular purpose and merchantability, and makes no representations
+regarding the use of, or the results of the use of, the software and
+documentation in terms of correctness, accuracy, reliability, currentness or
+otherwise; and you rely on the software, documentation and results solely at
+your own risk.
+
+******************************************************************************/
+
+/*
+ *  $Id: floppy.h,v 1.1.1.1 1997/10/30 23:27:15 verghese Exp $;
+ */
+
+/*
+ * $Log: floppy.h,v $
+ * Revision 1.1.1.1  1997/10/30 23:27:15  verghese
+ * current 10/29/97
+ *
+ * Revision 1.5  1994/08/05  20:13:47  fdh
+ * Updated Copyright header and RCS $Id: identifier.
+ *
+ * Revision 1.4  1994/06/22  15:22:35  rusling
+ * Fixed up minor OSF build problem.  Changed fdacmd()
+ * definition.
+ *
+ * Revision 1.3  1994/06/20  14:18:59  fdh
+ * Fixup header file preprocessor #include conditionals.
+ *
+ * Revision 1.2  1994/06/17  19:34:01  fdh
+ * Clean-up...
+ *
+ * Revision 1.1  1993/06/08  19:56:13  fdh
+ * Initial revision
+ *
+ */
+
+
+
+#define	TRUE	1
+#define	FALSE	0
+#define REALFLOPPY 1
+
+/* pic */
+#define	PICBOCW	0x20
+#define	PICBIRR	0x20
+#define	READIRR	0x0A
+#define	FDAMASK	0x40
+
+/* dma */
+#define DMACMD03 0x08
+#define DMACMD47 0xD0
+#define DMAMODE03 0x0B
+#define DMAMODE47 0xD6
+#define DMAXMODE03 0x40B
+#define DMAXMODE47 0x4D6
+#define	DMAOFFS	0x04
+#define	DMALPAG	0x81
+#define DMAHPAG 0x481
+#define	DMACNT	0x05
+#define	DMAHCNT	0x405
+#define	DMACBP	0x0C
+#define DMAMASK03 0x0A
+#define DMAMASK47 0xD4
+
+/* fda */
+#define	FDADCR	0x03F2
+#define	FDAMSR	0x03F4
+#define	FDADR	0x03F5
+#define	FDADRR	0x03F7
+#define	FDADCB	0x03F7
+
+/* dcr */
+#define	DCRSELA	0x00
+#define	DCRSELB	0x01
+#define	DCRSELC	0x02
+#define	DCRSELD	0x03
+#define	DCRNRES	0x04
+#define	DCRENAB	0x08
+#define	DCRMTRA	0x10
+#define	DCRMTRB	0x20
+#define	DCRMTRC	0x40
+#define	DCRMTRD	0x80
+
+/* msr */
+#define	MSRDIO	0x40
+#define	MSRRQM	0x80
+
+/* drr */
+#define	DRR500	0x00
+#define	DRR250	0x02
+
+/* dcb */
+#define	DCBNCHG	0x80
+
+/* st0 */
+#define	ST0IC	0xC0
+#define	ST0NT	0x00
+#define	ST0NR	0x08
+
+/* st1 */
+#define	ST1NW	0x02
+
+/* cmd */
+#define	NREAD	0x66
+#define	NWRITE	0x45
+#define	NRECAL	0x07
+#define	NSEEK	0x0F
+#define	NSINTS	0x08
+#define	NSPEC	0x03
+
+#define	FDTOMEM	0
+#define	MEMTOFD	1
+
+#define	NCMD	9
+#define	NSTS	7
+
+#define	UNITNUM	0
+#define	UNITSEL	(DCRSELA)
+#define	UNITMTR	(DCRMTRA)
+
+#define	lSRT	0xE0			/* 4 mS				*/
+#define	lHUT	0x08			/* 256 mS			*/
+
+#define	hSRT	0xC0			/* 4 mS				*/
+#define	hHUT	0x0F			/* 256 mS			*/
+
+#define	HLT	0x02			/* 4 mS				*/
+#define	ND	0x00			/* Use DMA			*/
+
+int	fdactrk;
+
+static void read_sector(int sec , int loc);
+static int get_file_info(char * file2load , int flag);
+static void prep_filename(ub * fn , ub * nfn , ub * ext);
+static int get_boot_info(void );
+static void load_file(void );
+static int get_sec(int gcluster);
+static int get_next_cluster(ui gcluster , ui ifat);
+static void fdainit(int rate);
+static void fdaspinup(void );
+static void fdaspindown(void );
+static int fdaio(char * buf , int sec , int type);
+static void fdacmd(unsigned char cmd[] , int ncmd);
+static int fdasts(void );
+static void fdawait(void );
+static void fdasleep(int nmsec);
+static void init_pic(void );
+
+#define fdREAD  0		               /* read command */
+#define fdWRITE 1			       /* write command */
+
+#endif /* __FLOPPY_H_LOADED */