.\" $OpenBSD: sdhc.4,v 1.3 2007/05/31 19:19:51 jmc Exp $ .\" .\" Theo de Raadt, 2006. Public Domain. .\" .Dd $Mdocdate: May 31 2007 $ .Dt SDHC 4 .Os .Sh NAME .Nm sdhc .Nd SD Host Controller .Sh SYNOPSIS .Cd "sdhc* at pci?" .Cd "sdmmc* at sdhc?" .Sh DESCRIPTION The .Nm driver provides support for SD controllers following the SD Host Controller Standard Simplified Specification. .Pp The .Xr sdmmc 4 subsystem performs SD/MMC transactions to communicate with whatever SD/SDIO devices are inserted into the SD slot. .Sh SEE ALSO .Xr intro 4 , .Xr sdmmc 4 .Sh HISTORY The .Nm driver first appeared in .Ox 4.0 . .Sh AUTHORS .An -nosplit The .Nm driver was written by .An Uwe Stuehler Aq uwe@openbsd.org .