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| author | sos <sos@FreeBSD.org> | 2001-03-07 08:12:24 +0000 |
|---|---|---|
| committer | sos <sos@FreeBSD.org> | 2001-03-07 08:12:24 +0000 |
| commit | bfd72934ab6e6de706fc0e38dc1eff28e6eedcd5 (patch) | |
| tree | 09e138e12978546f1afe52fd9855305396b53542 /share/man/man4/ata.4 | |
| parent | 8cbc9f88dbd8cc3ba996417500505294a0324490 (diff) | |
| download | FreeBSD-src-bfd72934ab6e6de706fc0e38dc1eff28e6eedcd5.zip FreeBSD-src-bfd72934ab6e6de706fc0e38dc1eff28e6eedcd5.tar.gz | |
Update woith latest chipsets and options
Diffstat (limited to 'share/man/man4/ata.4')
| -rw-r--r-- | share/man/man4/ata.4 | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/share/man/man4/ata.4 b/share/man/man4/ata.4 index 6f231a0..292525c 100644 --- a/share/man/man4/ata.4 +++ b/share/man/man4/ata.4 @@ -71,6 +71,10 @@ To enable DMA on an ATAPI device: .Pp To enable Tagged Queuing support (only IBM DPTA and DTLA drives support that) .Cd options ATA_ENABLE_TAGS +.Pp +To enable write caching (WARNING might cause data loss on power failures) +.Cd options ATA_ENABLE_WC +.Pp .Sh DESCRIPTION This driver provides access to disk drives, ATAPI CD-ROM and DVD drives, ZIP drives and tape streamers connected to controllers @@ -122,8 +126,10 @@ Ultra DMA 33 (UDMA2), 33 MB/sec Ultra DMA 33 (UDMA2), 33 MB/sec .It VIA 82C586 Ultra DMA 33 (UDMA2), 33 MB/sec -.It VIA 82C686 +.It VIA 82C686a Ultra DMA 66 (UDMA4), 66 MB/sec +.It VIA 82C686b +Ultra DMA 100 (UDMA5), 100 MB/sec .El .Pp All unknown chipsets can be supported at the maximum speed of 16 MB/sec. @@ -196,7 +202,7 @@ The .Nm driver does not support MFM/RLL/ESDI (ST-506) style disks. .Pp -Remember that in order to use UDMA4 mode you +Remember that in order to use UDMA4 (and above) mode you .Em have to use a special 80 conductor cable, and the driver tries to determine if you have such a cable |
