Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!uwm.edu!srcsip!dienbienphu!shankar From: shankar@SRC.Honeywell.COM (Subash Shankar) Newsgroups: comp.sys.apple Subject: Re: Really small question Message-ID: <50690@srcsip.UUCP> Date: 16 Dec 89 00:33:49 GMT References: <9542@microsoft.UUCP> Sender: news@src.honeywell.COM Reply-To: shankar@src.honeywell.com (Subash Shankar) Organization: Honeywell Systems & Research Center Lines: 15 In article <9542@microsoft.UUCP> brianw@microsoft.UUCP (Brian Willoughby) writes: >Thirdly (did I say there were only a couple of ways? shame on me), you could >use the VERY fast MVP instruction, which is as fast as DMA (for a given memory >speed) if you are willing to move <= 64K in one shot Is this really true? MVP takes 7 cycles per byte, and my understanding was that DMA only takes one cycle per byte (perhaps two since the address and data lines are shared). --- Subash Shankar Honeywell Systems & Research Center voice: (612) 782 7558 US Snail: 3660 Technology Dr., Minneapolis, MN 55418 shankar@src.honeywell.com srcsip!shankar