Great answer. I usually have to redo flash chips becuse they're set up for camers at the factory. The small boot program in the mbr is for movie cameras not computers. Left unchanged it could do something unpleasent. SD cards are the worse. DOS starts working then quits on big chips. It gets too far ahead of the chip and decides that its not working and quits.
cheers DS On Wed, 03 Dec 2014 02:11:13 -0500 "TJ Edmister" <damag...@hyakushiki.net> writes: > On Tue, 02 Dec 2014 21:13:59 -0500, Dale E Sterner > <sunbeam...@juno.com> > wrote: > > > 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 > > It is a very fast clock, 1.5 GHz and beyond. It uses differential > signaling (two wires to transmit one bit) which is less vulnerable > to > noise. > > The IDE interface could not run at such a high frequency because it > uses > 5V TTL signaling, like an old motherboard bus (or parallel printer > port). > Except where a motherboard has multiple layers with a ground plane > and > whatnot to control noise, a ribbon cable doesn't. The 80-conductor > ribbon > cables have extra ground wires to improve signal integrity and > allowed the > speed to increase from 16.6MHz (ATA 33) to 66MHz (ATA 133). The > original > speed for the IDE interface was 1.66MHz (PIO 0). > > Hypothetically, they could have used high-speed differential > signaling AND > a connector with multiple bits in parallel for even more speed. This > is > basically what a PCI-express graphics slot is. > > > 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. > > > > The DOS format utility is kind of an anachronism at this point. > Usually it > takes a long time to format a partition because it's iterating > through > every sector of the disk. It's completely unnecessary these days. > All it > really needs to do is write a boot sector, FAT, and root directory. > > > ------------------------------------------------------------------------- ----- > 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 > ____________________________________________________________ > What's your flood risk? > Find flood maps, interactive tools, FAQs, and agents in your area. > http://thirdpartyoffers.juno.com/TGL3165/547f21f890abe21f82047mp08duc > ******************************************************>>>> >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
