Parallel Cable IV operating in "Compatibility Mode" under linux kernel 2.6.x

May 08, 2005 1 Replies

hi all



we following the steps from

formatting link
and install the parallel cable driver under linux kernel 2.6.10 (suse



9.3 pro) Impact was not able to find xpc4drvr module thus parallel cable IV has been set to compatibility mode. following message is from "make download" in command mode

AutoDetecting cable. Please wait. Connecting to cable (Parallel Port - parport0). WinDriver v7.00 Jungo (c) 1997 - 2005 Build Date: Apr 26 2005 X86



11:07:13. parport0: baseAddress=0x378, ecpAddress=0x778 LPT base address = 0378h. ECP base address = 0778h. ECP hardware is detected. Cable connection established. Connecting to cable (Parallel Port - parport0) in ECP mode. Module xpc4drvr is not loaded. Cable connection failed. Connecting to cable (Parallel Port - parport0). WinDriver v7.00 Jungo (c) 1997 - 2005 Build Date: Apr 26 2005 X86
11:07:13. LPT base address = 0378h. ECP base address = 0778h. Cable connection established. ECP port test failed. Using download cable in compatibility mode.

from the message the cable is operating in compatibility mode because "xpc4drvr" is not loaded. When i check the module list, the "xpc4drv" is loaded (instead of "xpc4drvr").



The kernel message shows the following message when xpc4drvr is loaded.



xpc4drv: unsupported module, tainting kernel. xpc4drvr: init_module



Anyone has a solution to this?



The only certain thing is that it is about 10X slower than high speed mode. This become very annoying when trying downloading a big bitfile.



thank you



Jason



Hi Jason,

At least Altera's download cables are supported by the standard ppdev interface. Even the USB-based cables will be supported under Linux in the near future.

Best regards,

Ben

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