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| author | tegge <tegge@FreeBSD.org> | 1997-09-17 20:16:17 +0000 |
|---|---|---|
| committer | tegge <tegge@FreeBSD.org> | 1997-09-17 20:16:17 +0000 |
| commit | dc9fb7214712036d21e7066d05c5ddd251d1ddd4 (patch) | |
| tree | d31b0e1d07074e4cc05262b9aec7fe4824e6974d /sys/isa/fdc.h | |
| parent | 52f8c412b881dd0c998297025bb3d13b9a7157d8 (diff) | |
| download | FreeBSD-src-dc9fb7214712036d21e7066d05c5ddd251d1ddd4.zip FreeBSD-src-dc9fb7214712036d21e7066d05c5ddd251d1ddd4.tar.gz | |
Enable the FIFO on enhanced floppy controllers. This reduces the
number of dma overruns/underruns for systems under heavy dma load.
As a side effect, broken enhanced floppy controllers that sometimes
don't detect dma overruns/underruns will give less errors.
Reviewed by: j@uriah.heep.sax.de (J Wunsch)
Diffstat (limited to 'sys/isa/fdc.h')
| -rw-r--r-- | sys/isa/fdc.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/isa/fdc.h b/sys/isa/fdc.h index 99b33bb..34d7011 100644 --- a/sys/isa/fdc.h +++ b/sys/isa/fdc.h @@ -31,7 +31,7 @@ * SUCH DAMAGE. * * from: @(#)fd.c 7.4 (Berkeley) 5/25/91 - * $Id$ + * $Id: fdc.h,v 1.8 1997/02/22 09:36:10 peter Exp $ * */ @@ -54,6 +54,7 @@ struct fdc_data #define FDC_HASFTAPE 0x02 #define FDC_TAPE_BUSY 0x04 #define FDC_STAT_VALID 0x08 +#define FDC_HAS_FIFO 0x10 struct fd_data *fd; int fdu; /* the active drive */ int state; |
