Technologies
Case studies
Digigram Hardware Compatibility Notes
UAX220, UAX220v2, UAX220-Mic
November 23, 2006 – Dropouts in the audio data recorded with UAX220 family
On PCs equipped with the I/O controller Intel 82801FB ICH6 (USB controller), there may be dropouts (lost samples) in data recorded under Windows XP. Intel has published some issues about this controller, which can explain this behaviour. This has been experienced on several PCs (mother board Intel Battle Lake D915PBL, Toshiba Portege S100 laptop).
Digigram recommends that UAX220 products are not used in conjunction with computers equipped with the I/O controller Intel 82801FB ICH6.
White noise on VXpocketV2 cards on the following laptops:
- ASUS L5GXP30-C PRO
- Dell Inspiron 5100/8200/4150
- HP ZD7280
Description
It seems that another device uses the memory addresses assigned to the VXpocket by Windows, sending non-audio data to the card.
Possible workaround
On the Dell Inspiron models 8200 and 4150, change the I/O resources of the VXpocket in the Device Manager selecting an address above D800.
For the other above mentioned laptops, we haven't found any workaround so far.
Digigram HR sound cards and some MSI mother boards
- MSI 865PE NEO2
- MSI KT4AV (VIA VT8377Apollo KT400)
Description
The driver for HR sound cards cannot load.
This is due to a signal which is not defined on these mother boards. This signal determines if the transfers on the bus are on 64 bits or 32 bits. As the mother board does not set this signal to a fixed value, the Digigram HR sound card reads that the transfer is 64-bit. The HR card switches to 64-bit transfers, but the bus on these mother boards is on 32 bits; so transfers fail and the driver cannot load.
Status: Fixed
NVX882 HR OEM: from S/N 593
VX882 HR + BOB8 OEM: from S/N 192
VX882 HR End User: from S/N 157
VX882 HR + BOB8 End User: from S/N 163
VX881HR OEM: from S/N 26
VX881HR + BOB8 OEM: from S/N 26
PCX881HR: from S/N 12
PCX882HR: from S/N 109
VX1222HR: from S/N 3
PCX1222HR: from S/N 21
PCX1221HR: from S/N 19
PCX1222HR + BOB12: from S/N 24
VX442 and Apple G5
Two specific Apple G5 models have been found to be incompatible with some PCI audio interfaces, including Digigram VX442 cards:
- DUAL G5 1.8 GHz system featuring PCI slots (as opposed to PCI-X) and 4 RAM slots
- DUAL G5 2.0 GHz system featuring PCI slots (as opposed to PCI-X) and 4 RAM slots
This incompatibility may cause spurious noise, sample dropouts, or audio cannot be played at all.
In certain cases, a firmware update may fix this issue (DUAL G5 1.8 GHz only)
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