Ultra DMA's

[Guest]

Archived from groups: alt.comp.periphs.mainboard.msi-microstar (More info?)

I've had a K7N2 Delta MSI motherboard and need some advice. I used to
have to 2 WD160 harddrives connected to the Primary IDE, and 2 dvd
burners connected to the Secondary IDE. After I thought I read
something a while ago about having a hard drive and cd rom connected
to one ide, and then the other hard drive and a cd rom connected to
the other I changed them to hd and burner, hd and burner. But I
noticed when checking the DMA's on everthing that on the Primary ide
channel, the WD Harddrive is an Ultra dma mode 5 and the dvd burner
(Plextor PX-708A) is an Ultra dma mode 4. On the Secondary ide, the
WD and the dvd burner (DRU-710A) are both Ultra dma mode 2. Both WD
are 160 gig, and bought about a month apart. Why the difference in
modes, and should I put the two hd's on the primary ide, and the
burners on the secondary. Any advice would be greatly appreciated

 

[Gollum]

Archived from groups: alt.comp.periphs.mainboard.msi-microstar (More info?)

On Sat, 08 Jan 2005 23:16:12 -0600, Bob Kovach <bobk80@adelphia.net>
wrote:

>I've had a K7N2 Delta MSI motherboard and need some advice. I used to
>have to 2 WD160 harddrives connected to the Primary IDE, and 2 dvd
>burners connected to the Secondary IDE. After I thought I read
>something a while ago about having a hard drive and cd rom connected
>to one ide, and then the other hard drive and a cd rom connected to
>the other I changed them to hd and burner, hd and burner. But I
>noticed when checking the DMA's on everthing that on the Primary ide
>channel, the WD Harddrive is an Ultra dma mode 5 and the dvd burner
>(Plextor PX-708A) is an Ultra dma mode 4. On the Secondary ide, the
>WD and the dvd burner (DRU-710A) are both Ultra dma mode 2. Both WD
>are 160 gig, and bought about a month apart. Why the difference in
>modes, and should I put the two hd's on the primary ide, and the
>burners on the secondary. Any advice would be greatly appreciated

An IDE channel onlys runs as fast as the slowest device. Maybe the
DRU-710A is slowing it down.

Gollum

 

[Guest]

Archived from groups: alt.comp.periphs.mainboard.msi-microstar (More info?)

"Gollum" <Gollum@pretty.net> wrote in message
news:nrh5u0l05u23jmn879a3fua1pla987jq3p@4ax.com...
> On Sat, 08 Jan 2005 23:16:12 -0600, Bob Kovach <bobk80@adelphia.net>
> wrote:
>
>>I've had a K7N2 Delta MSI motherboard and need some advice. I used to
>>have to 2 WD160 harddrives connected to the Primary IDE, and 2 dvd
>>burners connected to the Secondary IDE. After I thought I read
>>something a while ago about having a hard drive and cd rom connected
>>to one ide, and then the other hard drive and a cd rom connected to
>>the other I changed them to hd and burner, hd and burner. But I
>>noticed when checking the DMA's on everthing that on the Primary ide
>>channel, the WD Harddrive is an Ultra dma mode 5 and the dvd burner
>>(Plextor PX-708A) is an Ultra dma mode 4. On the Secondary ide, the
>>WD and the dvd burner (DRU-710A) are both Ultra dma mode 2. Both WD
>>are 160 gig, and bought about a month apart. Why the difference in
>>modes, and should I put the two hd's on the primary ide, and the
>>burners on the secondary. Any advice would be greatly appreciated
>
> An IDE channel onlys runs as fast as the slowest device. Maybe the
> DRU-710A is slowing it down.
>
> Gollum

That's old B.S. and no longer applies.
http://www.pcguide.com/ref/hdd/if/ide/confTiming-c.html

 

[Guest]

Archived from groups: alt.comp.periphs.mainboard.msi-microstar (More info?)

Gollum <Gollum@pretty.net> wrote in
news:nrh5u0l05u23jmn879a3fua1pla987jq3p@4ax.com:

> On Sat, 08 Jan 2005 23:16:12 -0600, Bob Kovach <bobk80@adelphia.net>
> wrote:
>

<snip>

>
> An IDE channel onlys runs as fast as the slowest device. Maybe the
> DRU-710A is slowing it down.
>
> Gollum

Hasn't been the case for a number of years. You can mix & match any way
you like and each device will run at full speed (assuming you have things
set up properly)


--
C:\DOS
C:\DOS\RUN
...\RUN\DOS\RUN

 

[Gollum]

Archived from groups: alt.comp.periphs.mainboard.msi-microstar (More info?)

On Tue, 11 Jan 2005 03:13:02 GMT, "G.M." <bitbucket@cox.net> wrote:

>Gollum <Gollum@pretty.net> wrote in
>news:nrh5u0l05u23jmn879a3fua1pla987jq3p@4ax.com:
>
>> On Sat, 08 Jan 2005 23:16:12 -0600, Bob Kovach <bobk80@adelphia.net>
>> wrote:
>>
>
><snip>
>
>>
>> An IDE channel onlys runs as fast as the slowest device. Maybe the
>> DRU-710A is slowing it down.
>>
>> Gollum
>
>Hasn't been the case for a number of years. You can mix & match any way
>you like and each device will run at full speed (assuming you have things
>set up properly)


Well I guess you can't teach an old dog new tricks ;D
Thanks for the update.

Gollum

 

[Gollum]

Archived from groups: alt.comp.periphs.mainboard.msi-microstar (More info?)

On Tue, 11 Jan 2005 02:06:12 GMT, "Kill Bill" <a@b.c> wrote:

>
>"Gollum" <Gollum@pretty.net> wrote in message
>news:nrh5u0l05u23jmn879a3fua1pla987jq3p@4ax.com...
>> On Sat, 08 Jan 2005 23:16:12 -0600, Bob Kovach <bobk80@adelphia.net>
>> wrote:
>>
>>>I've had a K7N2 Delta MSI motherboard and need some advice. I used to
>>>have to 2 WD160 harddrives connected to the Primary IDE, and 2 dvd
>>>burners connected to the Secondary IDE. After I thought I read
>>>something a while ago about having a hard drive and cd rom connected
>>>to one ide, and then the other hard drive and a cd rom connected to
>>>the other I changed them to hd and burner, hd and burner. But I
>>>noticed when checking the DMA's on everthing that on the Primary ide
>>>channel, the WD Harddrive is an Ultra dma mode 5 and the dvd burner
>>>(Plextor PX-708A) is an Ultra dma mode 4. On the Secondary ide, the
>>>WD and the dvd burner (DRU-710A) are both Ultra dma mode 2. Both WD
>>>are 160 gig, and bought about a month apart. Why the difference in
>>>modes, and should I put the two hd's on the primary ide, and the
>>>burners on the secondary. Any advice would be greatly appreciated
>>
>> An IDE channel onlys runs as fast as the slowest device. Maybe the
>> DRU-710A is slowing it down.
>>
>> Gollum
>
>That's old B.S. and no longer applies.
>http://www.pcguide.com/ref/hdd/if/ide/confTiming-c.html

From the same site:

Independent Master/Slave Device Timing: Hard disk controllers on
modern systems support running the master and slave device at
different speeds, if one supports faster transfer modes than the
other. Some systems, however, especially older ones, do not. If you
are using two devices with radically different maximum transfer rates,
and the chipset doesn't support independent timing, you will slow down
the faster device to the speed of the slower one.

Hard Disk and ATAPI Device Channel Sharing: There are several reasons
why optical drives (or other ATAPI devices) should not be shared on
the same channel as a fast hard disk. ATAPI allows the use of the same
physical channels as IDE/ATA, but it is not the same protocol; ATAPI
uses a much more complicated command structure. Opticals are also
generally much slower devices than hard disks, so they can slow a hard
disk down when sharing a channel. Finally, some ATAPI devices cannot
deal with DMA bus mastering drivers, and will cause a problem if you
try to enable bus mastering for a hard disk on a channel they are
using.


Gollum