1991/0920/pc/devfloppy.c (diff list | history)

1991/0919/sys/src/9/pc/devfloppy.c:6,11 – 1991/0920/sys/src/9/pc/devfloppy.c:6,13 (short | long | prev | next)
1991/0727		#include "io.h"
1991/0802		#include "errno.h"
1991/0727
1991/0920		/* NEC PD765A (8272A compatible) floppy controller */
1991/0802		typedef struct Drive Drive;
1991/0727		typedef struct Controller Controller;
1991/0802		typedef struct Type Type;
1991/0919/sys/src/9/pc/devfloppy.c:42,47 – 1991/0920/sys/src/9/pc/devfloppy.c:44,50
1991/0728		/* file types */ Qdir= 0,
1991/0802		Qdata= (1<<2),
1991/0920		Qctl= (2<<2),
1991/0802		Qmask= (3<<2),
1991/0727		};
1991/0919/sys/src/9/pc/devfloppy.c:160,168 – 1991/0920/sys/src/9/pc/devfloppy.c:163,175
1991/0731
1991/0802		Dirtab floppydir[]={
1991/0823		"fd0disk", {Qdata + 0}, 0, 0600,
1991/0920		"fd0ctl", {Qctl + 0}, 0, 0600,
1991/0823		"fd1disk", {Qdata + 1}, 0, 0600,
1991/0920		"fd1ctl", {Qctl + 1}, 0, 0600,
1991/0823		"fd2disk", {Qdata + 2}, 0, 0600,
1991/0920		"fd2ctl", {Qctl + 2}, 0, 0600,
1991/0823		"fd3disk", {Qdata + 3}, 0, 0600,
1991/0920		"fd3ctl", {Qctl + 3}, 0, 0600,
1991/0802		};
1991/0811		#define NFDIR 2 /* directory entries/drive */
1991/0731
1991/0919/sys/src/9/pc/devfloppy.c:215,229 – 1991/0920/sys/src/9/pc/devfloppy.c:222,241
1991/0731		void floppyinit(void) { /* * watchdog to turn off the motors */
1991/0802		kproc("floppy", floppykproc, 0);
1991/0731		}
1991/0802		Chan* floppyattach(char *spec) {
1991/0920		static int kstarted; if(kstarted == 0){ /* * watchdog to turn off the motors */ kstarted = 1; kproc("floppy", floppykproc, 0); }
1991/0802		return devattach('f', spec); }
1991/0919/sys/src/9/pc/devfloppy.c:274,288 – 1991/0920/sys/src/9/pc/devfloppy.c:286,291
1991/0802		error(Eperm); } static void ul2user(uchar *a, ulong x) { a[0] = x >> 24; a[1] = x >> 16; a[2] = x >> 8; a[3] = x; }
1991/0809		/*
1991/0831		* look for a floppy change */
1991/0919/sys/src/9/pc/devfloppy.c:292,298 – 1991/0920/sys/src/9/pc/devfloppy.c:295,301
1991/0831		if((inb(Fchanged) & Fchange) == 0) return;
1991/0920		print("floppy has changed\n");
1991/0831		} /*