TASCAM issue raising its head.

[Navy Sealed]

Hi guys. Customer has a TASCAM US-122 as an interim measure before getting a
Lynx. The unit is being driven from a Gigabyte GA-K8NS Ultra 939 and carries
over the top of the output, a distinct crackle.

I have optimised the RAM to Dual, windows is running everything in the
background as Primary, all IRQ's are right. and all drivers are correct and
I have flashed the BIOS to 10 (latest).

This is not the first time this has happened to a US122. I have spent enough
hours screwing about with it to just want to change the Mobo. Can anybody
point me to one that doesn't interact in this way with the TASCAM unit
please.

TIA

[Bob Cain]

Navy Sealed wrote:
> Hi guys. Customer has a TASCAM US-122 as an interim measure before getting a
> Lynx. The unit is being driven from a Gigabyte GA-K8NS Ultra 939 and carries
> over the top of the output, a distinct crackle.
>
> I have optimised the RAM to Dual, windows is running everything in the
> background as Primary, all IRQ's are right. and all drivers are correct and
> I have flashed the BIOS to 10 (latest).
>
> This is not the first time this has happened to a US122. I have spent enough
> hours screwing about with it to just want to change the Mobo. Can anybody
> point me to one that doesn't interact in this way with the TASCAM unit
> please.

While it's not quite a MOBO change, I've had no issues at all using
the US-122 with an older 800 mHz, 384 mb G3 Ibook and OSX 10.2.8 into
Digital Performer. Point being that you are probably on track by
suspecting either a MOBO (or OS problem) rather than a device problem.
Win XP?


Bob
--

"Things should be described as simply as possible, but no simpler."

A. Einstein

[Bob Cain]

Navy Sealed wrote:
> Hi Bob,
>
> It's definitely a Mobo issue. No help from Gigabyte unfortunately. No issues
> with OS either but yes it is XP Pro but has tested fine on other mobos'.
>
> What I need is a Mobo that has no issues with the Tascam unit.

Not sure it is appropriate for you but something that might do the job
at lower cost with less sturm und drang is a modern PCI bus USB card
with drivers specifically for it.

Please ignore if your heart is really set on a new MOBO. :-)


Bob
--

"Things should be described as simply as possible, but no simpler."

A. Einstein

[Edi Zubovic]

On Wed, 30 Aug 2006 09:11:51 +1000, "Navy Sealed"
> wrote:

>Hi guys. Customer has a TASCAM US-122 as an interim measure before getting a
>Lynx. The unit is being driven from a Gigabyte GA-K8NS Ultra 939 and carries
>over the top of the output, a distinct crackle.
>
>I have optimised the RAM to Dual, windows is running everything in the
>background as Primary, all IRQ's are right. and all drivers are correct and
>I have flashed the BIOS to 10 (latest).
>
>This is not the first time this has happened to a US122. I have spent enough
>hours screwing about with it to just want to change the Mobo. Can anybody
>point me to one that doesn't interact in this way with the TASCAM unit
>please.
>
>TIA
>

--- Hmm, I sniff as if it were a PCI bus... I have solved a bus
saturation issue due to increasing number of USB2 devices in Windows
XP SP2 where my hard drives started to perform roughly at 50% of their
usual performance in XP SP1... the HD Tach graph plot looked weird,
exactly the opposite, starting at low values, increasing to the end. I
have 2 SCSI Ultra 320 drives, Cheetah 15K4 and they can easily clog
the PCI bus, albeit SCSI itself is a bus itself. Don't know, but PCI X
/ PCIe comes to mind...
That directed me to concentrate on bus latency times, and yes, when I
set overall bus latencies in the BIOS to the highest value, 128, the
performance returned to standard ones more or less. I also have a
Gigabyte m/b, albeit older one. I have an impression, that the more
USB2 devices you add, the more PCI bandwidth is taken by them.

Anyhow, there is a neat tool called PCI latency tool, which adds a
service to Windows XP and controls latencies (ie. "time windows") for
each of devices installed.

Here is the d/l link:--

http://drivers.softpedia.com/get/Other-DRIVERS-TOOLS/Others/PCI-Latency-Tool-31-build-2.shtml

Edi Zubovic, Crikvenica, Croatia