Help: Base address for ISA-Memory over 82371 bridge

QNX Newsgroups (Archives) qdn.public.qnxrtp.newuser
1

Hy everybody
I’m trying to write a driver for the motor controller card ESC629 from RTD,
which is on the ISA-Bus in my system. I’ve the processor board MSMP5SE_P3SE
from Digital Logic with a PCI/ISA bridge 82371AB/EB PIIX4. Both cards are
based on PC/104.
To access the ESC629 over the bridge i should know the base adress of the
ISA-Memory to map it in the memory of my application.
I used some methods to access the pci-bus like:

pci_attach(0)
pci_attach_device
pci_find_device
pci_read_config32(bus, deviceFunction, 0x18, 1, &bar2)

But in the last line above i don’t know exactly which offset (0x18) i have
to use.

Who can help me and who has experience with this bridge under qnx.
An example would be very useful for me.

Thanks

urs

2

Hi Urs,

Could you please post the output of pci -vvv in text form.

Thanks

E.


Urs Zbinden <urs.zbinden@csem.ch> wrote:

Hy everybody
I’m trying to write a driver for the motor controller card ESC629 from RTD,
which is on the ISA-Bus in my system. I’ve the processor board MSMP5SE_P3SE
from Digital Logic with a PCI/ISA bridge 82371AB/EB PIIX4. Both cards are
based on PC/104.
To access the ESC629 over the bridge i should know the base adress of the
ISA-Memory to map it in the memory of my application.
I used some methods to access the pci-bus like:

pci_attach(0)
pci_attach_device
pci_find_device
pci_read_config32(bus, deviceFunction, 0x18, 1, &bar2)

But in the last line above i don’t know exactly which offset (0x18) i have
to use.

Who can help me and who has experience with this bridge under qnx.
An example would be very useful for me.

Thanks

urs