hello, i think i can help a little bit , i have problem on my PC , i have slow IDE disk , disk is new with 16MB cache and have around 6MB/s transfer rate,
so i done compare with utility hdparm, by default was using DMA turned off , speeds: hdparm -t /dev/hda1 /dev/hda1: Timing buffered disk reads: 18 MB in 3.28 seconds = 5.48 MB/sec i run command: hdparm -d 1 /dev/hda hdparm -t /dev/hda1 /dev/hda1: Timing buffered disk reads: 208 MB in 3.02 seconds = 68.87 MB/sec probably you have to set up using DMA i think, cwaki --- In [email protected], Giovanni Giovannozzi <[EMAIL PROTECTED]> wrote: > > I'm still working on it. Now I'm using 74vhc245 and 74vhc244, to buffer the outputs. The system works, but it's still to slow. If you want to have an idea, I took these times manually with a cronometer: > > cd /mnt/hd/flash 9 sec > touch prova.txt 8sec > echo "prova prova prova" > prova.txt > cat prova.txt 8 sec > ls 11 sec > rm prova.txt 8 sec > cd 8 sec > > Probably the prototype I made is not accurate enough. You can see it here http://img155.imageshack.us/img155/7439/fronte14in.jpg and http://img155.imageshack.us/img155/7439/fronte14in.jpg > Now I'm working on a new prototype. I'll let you now my results. > Best regards, > > Giovanni > > > sjoerdpieters <[EMAIL PROTECTED]> ha scritto: > Hello, > > What is the status of the slow ide disc? Is it still slow or behaves > it as an 'normal' disc comparing to a 100mbit tcp/ip interface > > Sjoerd. > > > --- In [email protected], "amh_k" wrote: > > > > I hesitate if LS is fast enough better find a HCT one. > > > > > > --- In [email protected], Giovanni Giovannozzi > > wrote: > > > > > > Thank you very much. I did some mistakes, because someone told me > > that the foxboard outpus were buffered. Now I think I understood > > what to and I'm currently working on it. > > > I'll let you know my results. > > > Best regards, > > > > > > Giovanni Giovannozzi > > > > > > gasensio2 ha scritto: > > > Hi Giovanni, > > > > > > ext_oe pin is to 'activate' buffers type 74LS245 or similar > > > and 'isolate' fox board from 'external world'... > > > > > > Had you used these buffers for D15..D0 signals ? > > > > > > Best regards > > > > > > > --- In [email protected], "giovanni_giovannozzi" > > > > wrote: > > > > > > > > > > --- In [email protected], "hanskanns61" > > > > > wrote: > > > > > > > > > > > > Hello everybody > > > > > > is there any way to connect and get access to an 3/4" > > Harddisk > > > with > > > > > > FAT32 Filesystem? > > > > > > > > > > > > thanks for answers > > > > > > > > > > > > > > > > I succesfully connected a IDE hard disk to the foxboard. > > > > > You need to look to the following links to understand which > > pins > > > you > > > > > must connect: > > > > > foxboard pinout > > > > > http://www.acmesystems.it/download/fox_j6_complete.pdf > > > > > http://www.acmesystems.it/download/fox_j7_complete.pdf > > > > > > > > > > IDE pinout > > > > > http://www.technick.net/public/code/cp_dpage.php? > > > > > aiocp_dp=pinconhdd_ata_int > > > > > > > > > > Axis IDE controller documentation > > > > > > > > > > http://developer.axis.com/doc/hw/etrax100lx/des_ref/20060209/etrax100 > > l > > > > > x_10_eide_ata_interf.pdf > > > > > > > > > > In the ide pinout link I gave above there are some pins, which > > > are > > > > > not necessary to connect; their numbers are 20(pin missing), > > 28 > > > > > (cable select), 32 (?), 34 (?), 39 (hard disk led). > > > > > > > > > > As I said above, the connection works (I tried creating a > > little > > > text > > > > > file and read, write to it and it works), but I still got a > > big > > > > > problem: when I connect the hard disk, the system work, but > > it's > > > > > terribly slow. Maybe the in this problem is involved the pin > > > ext_oe, > > > > > reported in the axis IDE/ATA documetation. I did not connect > > it, > > > > > because I don't know what's it's function and I don't fully > > > > > understand the documentation (I'm not expert in electronix). > > > > > > > > > > Sorry for my bad english. Hope my pieces of information will > > be > > > > > useful. > > > > > Best regards, > > > > > > > > > > Giovanni > > > > > > > > > > P.S.: Can anyone eplain or give a link for the ext_oe pin? > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > --------------------------------- > > > Yahoo! Mail: gratis 1GB per i messaggi, antispam, antivirus, POP3 > > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > --------------------------------- > Yahoo! Mail: gratis 1GB per i messaggi, antispam, antivirus, POP3 >
