We would like to know whether PCI serial cards can be used with Dev.ser or
not. I checked up the knowledgebase for finding an answer for this.
Here’s what I could find:-
Configuring Dev.ser to work with multi-port PCI serial card
We are trying to install a two port serial PCI card on x86 running QNX4.24.
The serial driver Dev.ser does not seem to be communicating with the card.
Is this supported? Are there some special tricks in using PCI together with
Yes, PCI serial cards may be used with QNX4.
The trick is to use the show_pci utility to detect the serial card’s
resources and then pass them as options to the Dev.ser driver and to make
sure there are no resource conflicts with the other PCI peripherals.
Dev.ser does not handle sharing of interupts on the PCI bus very well. The
PCI cards may have to be moved to different slots until a working
configuration for the PCI BIOS is found. Sharing interrupts between
multiple devices is never a really good idea, because sharing generally
relies on either the user or the software “not doing” something that could
create a conflict.
Now my question is :-
Will this trick work even if my PCI card is using a memory-mapped address?