OSCI Frequently Asked Questions

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Question #309: I have a problem while receiving data from some external device through the serial ports of the OSCI card. Everything works flawless at slow baud rates but if I switch to a faster baud rate, the data received becomes corrupt. And it gets even worse the higher the baud rate is.
Answer: First, please check that your cabling is correct and within specification. If the cabling is correct, chances are that you are facing an UART "Overrun Error" problem. Please try the following points:
  • Make sure that the Rx FIFO is enabled by the OSCI driver.
  • Reduce the Rx FIFO trigger level used by the OSCI driver.
  • Check if any real time disturbing feature such as "System Management Mode (SMM)" is active on your system. If yes, try to disable it.
  • Check for other devices / drivers causing a high interrupt latency and if yes, remove them from the system.
  • Reduce the baud rate.

Question #349: Can this PC/104-Plus card also be used in a system with a PC/104 (ISA part) only stack?
Answer: No. As this card is based on one (or more) PCI interface chips, the use of a PC/104-Plus capable host system is mandatory. The main purpose to the provided PC/104 connector is to pass-through the ISA signals to allow the installation of additional PC/104 cards.

Question #268: Under Windows XP Embedded, the MPL OSCI card driver can not be installed successfully. What's the matter?
Answer: The OSCI driver depends on the Windows XP Embedded Multifunction Driver (mf.sys) to work properly. Please make sure that this driver is also included into your Windows XP Embedded OS image.
 
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