I can think of only 2 ways an engineer can get those speeds out of a serial device. A very fast clock or big external buffers. I think DOS could handle a fast clock but if they use buffers; DOS may not know how to use them like windows or Linux. I never used SATA so I can't say. You would be in good position to know. As far as formating an SD chip; sometimes the format gets corrupted and you need to redo it. DOS just doesn't do well on the big stuff; no problem ever with cf chips.
cheers DS On Tue, 2 Dec 2014 20:54:49 -0500 dmccunney <dennis.mccun...@gmail.com> writes: > On Tue, Dec 2, 2014 at 8:18 PM, Dale E Sterner <sunbeam...@juno.com> > wrote: > > Tranferings 1 bit at a time is always slower than 8 bits at a > time. > > if the clock stays the same for both. How SATA beats this > > is something I don't understand. SATA doesn't have seperate > > handshaking outputs so handshkes have to travel the same serial > lines. > > Quit a feat of engineering there. > > See http://en.wikipedia.org/wiki/Serial_ATA > > Did you stop learning about the technology once you learned enough > about DOS to do what you wanted? A lot of what you post here seems > to > be based on 25 year old ideas about how this stuff works. The > technology has progressed a bit, and you seem to be making > assumptions > that may not be true for current hardware and OSes. > > > When I try to format very large SD chips with DOS; the software > just gives up. Small sd > > chips do format but slowly. Large CF chips format in a few > seconds. > > That's an OS and old hardware issue, It's not inherent to SD. > > And it's not clear why you would *need* to format an SD card of any > size. Depending on volume size, they come formatted as FAT16 or > FAT32. I've formatted them for other reasons, like using a Linux > ext3 > file system or NTFS. I put the card into an SD adapter and do the > format from my desktop machine. It's quite quick, thanks. > > > cheers > > DS.. > ______ > Dennis > https://plus.google.com/u/0/105128793974319004519 > > ------------------------------------------------------------------------- ----- > Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server > from Actuate! Instantly Supercharge Your Business Reports and > Dashboards > with Interactivity, Sharing, Native Excel Exports, App Integration & > more > Get technology previously reserved for billion-dollar corporations, > FREE > http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/4140/ostg.clk trk > _______________________________________________ > Freedos-user mailing list > Freedos-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freedos-user > ____________________________________________________________ > Are YOU Dumb? > Are You Smarter Than a 5th Grader? 79% Of Users Failed This Quiz! > http://thirdpartyoffers.juno.com/TGL3165/547e6e549e1766e5422demp01duc > ******************************************************>>>> >From Dale Sterner - MS organic chemistry http://pubs.acs.org/doi/abs/10.1021/jo00975a052 *******************************************************>>>> ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=164703151&iu=/4140/ostg.clktrk _______________________________________________ Freedos-user mailing list Freedos-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-user
