I am trying to track down an occasional system hang-up (QNX 4.25E).
If I run Proc32 using the options -o 0x2f8 -v 3 I can get debug output to the
serial port. However, that port is normally heavily used for other purposes
and I don’t want to disrupt the system under test by disabling that facility.
I do have a set of 16 serial ports built using Philips SCC2698B (8 channel
serial devices). Does anyone have any idea whether specifying the port
address for one of these devices will also work?
I guess I can just try it, but it means quite a bit of hacking the wiring loom
to get at the right pins and I am reluctant to do that without some confidence
it is worth the effort.
Thank in advance
William Morris
wrm@innovation-tk.com
“William Morris” <wrm@innovation-tk.com> wrote in message
news:9oqhf5$47q$1@inn.qnx.com…
I am trying to track down an occasional system hang-up (QNX 4.25E).
If I run Proc32 using the options -o 0x2f8 -v 3 I can get debug output to
the
serial port. However, that port is normally heavily used for other
purposes
and I don’t want to disrupt the system under test by disabling that
facility.
I do have a set of 16 serial ports built using Philips SCC2698B (8 channel
serial devices). Does anyone have any idea whether specifying the port
address for one of these devices will also work?
It should., if you can use it with Dev.ser, you should be ok, that means
it behaves as a standard serial port. If it uses a custom driver, you
are probably out of luck.
I guess I can just try it, but it means quite a bit of hacking the wiring
loom
to get at the right pins and I am reluctant to do that without some
confidence
it is worth the effort.
Thank in advance
William Morris
wrm@innovation-tk.com
“William Morris” <wrm@innovation-tk.com> wrote in message
news:9oqhf5$47q$1@inn.qnx.com…
I am trying to track down an occasional system hang-up (QNX 4.25E).
If I run Proc32 using the options -o 0x2f8 -v 3 I can get debug output to
the
serial port. However, that port is normally heavily used for other
purposes
and I don’t want to disrupt the system under test by disabling that
facility.
I do have a set of 16 serial ports built using Philips SCC2698B (8 channel
serial devices). Does anyone have any idea whether specifying the port
address for one of these devices will also work?
I guess I can just try it, but it means quite a bit of hacking the wiring
loom
to get at the right pins and I am reluctant to do that without some
confidence
it is worth the effort.
Thank in advance
cannot say for sure but as i can see from documentation on this chip from
http://www.semiconductors.philips.com/pip/SCC2698be1n64
it’s far away from standard uart 8250…16550A so my guess: no, you cannot.
but there’s always chances just to test.
// wbr