473,322 Members | 1,522 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,322 software developers and data experts.

RS232 problems in Windows 98

Hello,

I'm using the http://www.codeworks.it/net/VBNetRs232.htm rs232 class
to communicate with a portable instrument. It runs like a dream in
Windows NT/2000/XP
But in Windows 98 I get tons of time out errors. (This is on the
_same_ pc with NT/98 dual boot)

It's running at 115.2 kbps and 57.6 kbps with the same problem (9k6
works fine though, but waaay to slow)

I've done a very simple single threaded send/receive stress test
application that runs for hours in 115.2kbps without any errors
between two machines booted in Windows 2000, but gives me transfer
errors almost every minute between Win98 and Windows 2000.
The problems seems to lie in the way dotnet accesses the hardware in
Windows 98.
Been fiddling with fifo buffert sizes etc, without any result.

Any help or pointer would be appreciated

Thanks,
/Robert
Jul 21 '05 #1
0 1440

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

7
by: Chris | last post by:
Here's the situation: I work at a scientific institution and I have a portable electronic device which is used to take measurements. The device produces a very small amount of numerical data,...
1
by: Dan | last post by:
I wnat to see in browser an status from an device connected on rs232 port The java class for read from serial port is: //Serial.java import java.io.*; import java.util.*; import...
4
by: nchap99 | last post by:
hello, Does anybody know if Microsoft Dot Net supports the RS232 type of connection. As far as I know Visual basic 6 supports RS232 connection format. Thanks,
6
by: Przemo | last post by:
Hi, Do you know some good RS232C class? There is one in VB.NET 101 Examples, but I think it is poor. 1. I can't for e.g. read into my application all data received. I must tell how many...
0
by: Jason T | last post by:
I've downloaded and installed the '101 Visual Basic and C# Code Samples' from http://www.microsoft.com/downloads/details.aspx?familyid=08e3d5f8-033d-420b-a3b1-3074505c03f3&displaylang=en I have...
6
by: Ken Breit | last post by:
I am using the RS232.vb class to talk to the serial port. The problem I am having is when I try to read if anything is on the comm port. I call the read method, with the number of bytes I am...
8
by: Terry Olsen | last post by:
I'm trying to use the RS232 class that was in the Platform SDK (i think). Has anyone else used this with events successfully? Here's what i've got: ====================== Public WithEvents...
0
by: Robert | last post by:
Hello, I'm using the http://www.codeworks.it/net/VBNetRs232.htm rs232 class to communicate with a portable instrument. It runs like a dream in Windows NT/2000/XP But in Windows 98 I get tons of...
1
by: fidel | last post by:
Hello, my target is a small application which: * Start as a small Window * Offers several input fields for RS232-related connection informations (like parity etc...) * A Send-function to...
0
by: ryjfgjl | last post by:
ExcelToDatabase: batch import excel into database automatically...
0
isladogs
by: isladogs | last post by:
The next Access Europe meeting will be on Wednesday 6 Mar 2024 starting at 18:00 UK time (6PM UTC) and finishing at about 19:15 (7.15PM). In this month's session, we are pleased to welcome back...
1
isladogs
by: isladogs | last post by:
The next Access Europe meeting will be on Wednesday 6 Mar 2024 starting at 18:00 UK time (6PM UTC) and finishing at about 19:15 (7.15PM). In this month's session, we are pleased to welcome back...
0
by: jfyes | last post by:
As a hardware engineer, after seeing that CEIWEI recently released a new tool for Modbus RTU Over TCP/UDP filtering and monitoring, I actively went to its official website to take a look. It turned...
0
by: ArrayDB | last post by:
The error message I've encountered is; ERROR:root:Error generating model response: exception: access violation writing 0x0000000000005140, which seems to be indicative of an access violation...
1
by: Defcon1945 | last post by:
I'm trying to learn Python using Pycharm but import shutil doesn't work
0
by: af34tf | last post by:
Hi Guys, I have a domain whose name is BytesLimited.com, and I want to sell it. Does anyone know about platforms that allow me to list my domain in auction for free. Thank you
0
by: Faith0G | last post by:
I am starting a new it consulting business and it's been a while since I setup a new website. Is wordpress still the best web based software for hosting a 5 page website? The webpages will be...
0
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 3 Apr 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome former...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.