Manuals, Data Sheets, and Press Releases can be found in the MPL Documentation area of this homepage.
|Question #227:||I have bricked my board by accidentally overwriting the U-Boot bootloader. How can I resurrect the board?|
|Answer:||Do you have access to a JTAG debugger or an external EPROM programmer and a 4Mbit (or larger) EPROM suitable for the MPS on the board?
If not, please send the board back to MPL for repair.
If yes, the odds are good that you can fix the problem yourself.
As there are many different JTAG debuggers (with many different features) available and the precise way of reprogramming the on-board flash is highly debugger specific, no detailed "step-by-step" instructions can be given, only a rough sketch of what needs to be done. Please see your JTAG debugger's manual for more details regarding the points listed below:
|Question #340:||I observe power-up problems or sudden, unmotivated resets of the MIP board during normal operation. It seems to get worse if an additional add-on card is installed and/or the CPU and/or GPU load is increased.
|Answer:||Chances are that this is a power supply problem. In contrast to the PIP boards, the MIP boards expect their 5V system input voltage to be provided in a "suitable, clean" form, especially relating to short power transients. Please check the following points:
|Question #329:||I have attached a PC/104 or PC/104-Plus card to the [PIP | MIP] and I am sure that the card is configured correctly both from the hardware and the software side. Nevertheless the card does not work as expected, but shows erratic behaviour.|
|Answer:||Does the card need +12V, -12V or -5V from the PC104/PC104-Plus bus? If the answer is yes, chances are that the I/O drivers and/or some A/D or D/A circuitry are not properly powered.
By default the [PIP | MIP] does NOT provide the voltages mentioned above on the PC/104 or PC/104-Plus bus.
Please check the corresponding "User Manual" and/or "Technical Reference Manual" for details.
|Question #285:||Under Linux, I would like to use a card and/or driver using ISA interrupts, but it doesn't seem to work. Is there anything special about ISA interrupts?|
|Answer:||As the [PIP405 | MIP405 | MIP405T] supports more than 16 interrupt sources, the ISA interrupts are remapped to a non PC-like position as described in the table below:
So, if you want to use ISA IRQ5 for example, you have to request interrupt 37 (32 + 5) in your driver.