Re: Com Port error

Okay we can try that, just a minute... Well it doesn't work but I get a
different message, simply, "cannot communicate with port 1". This is a
standard Keil message. And no, we can't get a 32bit version of this
particular complier. Any other thoughts?


"Robert Roland" <fake@xxxxxxxxx> wrote in message
On Sat, 22 Jul 2006 12:31:02 -0500, "Jim Gainsley"
<jgainsley@xxxxxxxxxxxxx> wrote:

We are attempting to run some 16-bit software which ran nicely under
Win98SE, but fails to communicate with Com 1 under WinXP Pro SP2. We get
message in a command prompt window in a dialogue box titled MS-DOS
Subsystem, "Driver doesn't support baud rate (9600). Close Ignore"
tried several baud rates with the same result. Each time we configured
com1 port in Device Manager for the intended baud rate.

My guess is that your application is programmed to access I/O
registers directly, and not through Windows' API calls, as it should.
Windows 98 allows such direct hardware access, but XP does not.

The obvious solution is, of course, to upgrade the software to proper
32-bit design, but that may not be a possibility for you?

You might try to install '98 on a virtual machine and see if VMware's
hardware emulation can handle your situation.



Relevant Pages

  • Re: Bluetooth C# DLLs
    ... The architecture of the Bluetooth stacks is quite different between the desktop and device versions of Windows. ... On the desktop you can use the BluetothDeviceInfo.SetServiceState to enable a COM port for a device, once you can find the port name yourself you can use regular SerialPort code. ... >>> Are there C# DLLs in VS05/08 to communicate with Bluetooth devices? ...
  • Re: Serial port not working with legacy programms on XP laptops machines !
    ... If you are either using Windows API functions to communicate through ... Are you able to open the COM port ... but are not able to send or receive data or does your code fail when ...
  • Re: C dos program into C#
    ... I does communicate via comport, ... It is an exe program that communicates to some hardware controllers, ... Does it do port i/o? ... > impossible to run it under Windows without special drivers. ...
  • Equivalent functions of kernel32 in linux
    ... I need to develop a kernel level library to communicate with the serial ... port. ... My problem is I did that for windows with kernel.32 calls but ... Linux? ...
  • Re: to PFW or not to PFW
    ... The design of Microsoft Windows is including a security system. ... I'm just using Windows messages to let the web-browser do, ... because Windows messages are just one of many ways to communicate between ...