$OpenBSD: spdmem.4,v 1.8 2021/05/01 16:11:09 visa Exp $
Copyright (c) 2007 Jonathan Gray <jsg@openbsd.org>
Permission to use, copy, modify, and distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.Dd $Mdocdate: July 16 2013 $ .Dt SPDMEM 4 .Os .Sh NAME .Nm spdmem .Nd Serial Presence Detect memory .Sh SYNOPSIS .Cd "spdmem* at iic?"
Copyright (c) 2007 Jonathan Gray <jsg@openbsd.org>
Permission to use, copy, modify, and distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.Dd $Mdocdate: July 16 2013 $ .Dt SPDMEM 4 .Os .Sh NAME .Nm spdmem .Nd Serial Presence Detect memory .Sh SYNOPSIS .Cd "spdmem* at iic?"
p .Cd "# macppc" .Cd "spdmem* at mem?" .Sh DESCRIPTION The .Nm driver retrieves information about memory modules from an onboard EEPROM, standardised as JEDEC 21-C. Currently .Nm is able to decode information relating to SDRAM and DDR/DDR2/DDR3 SDRAM. .Sh SEE ALSO .Xr iic 4 .Sh HISTORY The .Nm device driver first appeared in .Ox 4.3 . .Sh AUTHORS .An -nosplit The .Nm driver was written by .An Nicolas Joly , .An Paul Goyette , and .An Tobias Nygren and ported to .Ox by .An Jonathan Gray Aq Mt jsg@openbsd.org .