TEAC IF-FW/DMmkII IF-FW/DMmkII v1.21 Release Notes - Page 3

Release Notes CAUTION The use of this unit has been confirmed using standard computers that meet the above operating system requirements. However, this is not a guarantee that it will work all computers that are running one of these operating systems. Even when running the same operating system, the processing capabilities of computers vary according to their specifications and other operating conditions. DPC Spike Checker for Windows "DPC Spikes" are delays or latencies in your system that interfere with correct operation of the IF-FW/DMmkII drivers. Some Graphic interfaces and LAN/Wireless interfaces are known to introduce large DPC spikes. These may only occur once in a few minutes, but they will cause drop-outs or other audio problems. To see if your system has unusual DPC spikes, a DPC Spike checker tool is now included in the installation. This application only runs on 32 bit versions of Windows XP or Windows Vista. Start this app (Start->All Programs->TASCAM-> IFFWDMmkII->DPC Spike Checker) and let it run while you use your computer normally for audio work. After a few minutes, check to see if it has registered any spikes. It will recommend a setting for the Performance Mode pull down in the IF-FW/DMmkII Control Panel. NOTE The DPC Spike Checker Tool will report invalid DPC latency numbers if it is still running when the system is put into Standby or Hibernate modes. Please quit and restart the tool in this case. Performance Mode The Control Panel has a new pull down selection called "Performance Mode", this has 4 settings: 1. "Normal" 2. "Safe Mode Level 1" 3. "Safe Mode Level 2" 4. "Safe Mode Level 3". Each level has different amounts of extra latency, which can prevent audio drop outs due to CPU load spikes. ªª Mac OS X Driver Compatibility This driver is now compatible with OS X 10.5.2 Maintenance Items This section describes the Maintenance items for each revision of the IF-FW/DMmkII drivers. Be sure to search for updated drivers for Graphic and Network devices if large spikes are detected, or be prepared to replace those interfaces in your computer if the additional latency required is not acceptable for your work. Maintenance Items in V1.21 ªª Windows Driver Stability V1.21 resolves a problem in which the screen became blue and the computer crashed. Latency In Safe Modes 1, 2 and 3, excessive latency occurred from the great amount of complex latency from DPC. This problem has been resolved. Minimum Buffer Size In Windows 7, the minimum buffer size had increased, but this problem has been resolved. TASCAM IF-FW/DMmkII Firmware: 1.10, Windows driver: 1.21, Mac OSX driver: 1.21 3