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Forum Topic - mmap not working for Athena III board: (2 Items)

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John Spring

10/02/2015 9:13 PM

post114585

mmap not working for Athena III board

I have tried to mmap  Advantech's PCM3680 CAN board I/O space into memory on the Diamond Athena III board until I am 
blue in the face (no, seriously, BLUE! It's not pretty). There are no resource conflicts that I can ascertain - no 
conflicting irqs or bae addresses.  I am using QNX 6.4.1.  The odd thing is: I can address the Advantech board just fine
, using the same software and OS, on an older Pentium M CPU.  Does anyone know of any "gotchas" for the Athena II/III? 
That is, dos the ISA bus require some setup I don't know about or something else?  Thanks for any advice!

mario sangalli

10/07/2015 12:28 PM

post114604

Re: mmap not working for Athena III board

Maybe You have to configurate the BIOS to open a legacy memory windows:
try PCIPnP/Reserved memory space/Reserve memory address or equivalend options .
If You will using an interrupt, You have to reserve te one to be used in ISA space.
bye

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