1.\" $OpenBSD: sdhc.4,v 1.4 2009/02/14 18:47:45 deraadt Exp $ 2.\" 3.\" Theo de Raadt, 2006. Public Domain. 4.\" 5.Dd $Mdocdate: February 14 2009 $ 6.Dt SDHC 4 7.Os 8.Sh NAME 9.Nm sdhc 10.Nd SD Host Controller 11.Sh SYNOPSIS 12.Cd "sdhc* at pci?" 13.Cd "sdmmc* at sdhc?" 14.Sh DESCRIPTION 15The 16.Nm 17driver provides support for SD controllers following the 18SD Host Controller Standard Simplified Specification. 19.Pp 20The 21.Xr sdmmc 4 22subsystem performs SD/MMC transactions to communicate with 23whatever MMC, SD, SDHC, or SDIO devices are inserted into the SD slot. 24.Sh SEE ALSO 25.Xr intro 4 , 26.Xr sdmmc 4 27.Sh HISTORY 28The 29.Nm 30driver first appeared in 31.Ox 4.0 . 32.Sh AUTHORS 33.An -nosplit 34The 35.Nm 36driver was written by 37.An Uwe Stuehler Aq uwe@openbsd.org . 38