Date: Thu, 2 Dec 1999 08:33:57 -0700 (MST) From: "Ronald G. Minnich" <rminnich@lanl.gov> To: freebsd-hackers@FreeBSD.ORG Subject: Re: memory-to-memory copy Message-ID: <Pine.LNX.4.20.9912020829580.5503-100000@mini.acl.lanl.gov> In-Reply-To: <Pine.GSO.3.96.991201161752.5996A-100000@sol.cs.binghamton.edu>
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On Wed, 1 Dec 1999, Zhihui Zhang wrote: > I used to know that memory to memory copy is done by the DMA controller in > the I/O bridge (Actually, this knowledge confues me because DMA controller Now, that brings back memories :-) check out the original dma chip design, ca. infinite years ago. Wow, did freebsd ever use this for bcopy? Hard to see that it would pay ... I know that early 8086 code did use it though. ron To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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