QuickBasic Cafe Forum

How do you intend to connect the output of the temperature sensing device to the Com port? This device is just a sensing unit which will return a value (voltage?) on the output pin depending on the current operating temperature. e.g. For an input voltage of 5v at a temperature of 20C the output ...

And, of course, Quick Basic Cafe has its own downloads:

https://qbasic.net/qbc/english/downl ... iler.shtml

Petersull - Welcome to the QBCafe forums.

I start QBasic 4.5 using a shortcut to a batch file. Here's the .bat code:

@echo off
cls

cd /d d:\my downloads\qbasic45
qb.exe /l qb.qlb
cd /d c:\
exit /b


Obviously you'd need to tailor the path to suit your setup. The shortcut option is selected to ...

Here's MS on the Expression too Complex error when using BC.Exe

http://support.microsoft.com/kb/39239

While your code may fall below the magic number 19 it's worth a try.

I understand that the caret (^) indicates that the error is in the line prior to the one referenced so that
1B9B 01AE 1250 ...

That's a lot of coding...........

I'm not really into Assembly but if you want to see what your coding looks like in Assembly I posted this:

For anyone interested in seeing what their QB program looks like in Assembly. This listing shows the QB statements followed by the Assembly codings:

Compile your .bas listing with the BC.EXE ...

Interesting question but I don't understand what you mean.

Hex arithmetic calculations are the same as decimal except that you must prefix the hex number with &H

So:

print &HC - &HB

will result in 1

as will

print 12 - 11

Also, what's a hexadecimal byte? A byte consists of 8 bits and the ...

Great news about port 966, did you try 956?.

I've so far had success with Win.ME and bombed with W2k/pro, XP Home, XP Pro. Haven't been able to devote a lot of time to this gem of a problem but will shortly try barebones Dos 7.1 (yes, Wengier Wu's version) and Win.98se.

Pity tho', I've not got any ...

Actually the 956 is correct, normal for an IBM Thinkpad. I can go into Device Manager and examine LPT1, and the resources listed are 03BC-03BE, which is 956 decimal.

You are, of course, correct about the 956 port address. I should have done a bit more research before jumping in with both feet ...

BTW when programming ports I have found it much easier to name the port, then if the port number must be changed there's just one change to make - such as:


outport% = &h2FB

out outport%,123
d%=inp (outport%) :print d%



And you can save a bit of coding by not using o%= or d%= --

OUT outport ...

I think your calculation of 956 being the port address is incorrect. 956 is possibly being written to by the system thereby returning decimal 255 every time. I changed the port address to 888, a more familiar one, and ran your code in the QB IDE under Win ME without problem. Here's the code I used ...

It's an unfortunate fact of QuickBasic that when running in any of the NT systems the ports are not direcly accessible even when running in the Command Shell (often called Dos but it isn't). There's a good read here http://www.beyondlogic.org/porttalk/porttalk.htm

Another possible workaround is ...

Genus is mentioned here http://www.dans20thcenturyabandonware.c ... og-dos.txt and there's a link at the bottom of the page for more info. I don't think it's a freebie.

Hope this helps.

V..

Nobody came to wish anybody a Merry Christmas - my excuse is that I was AWOL....

So to try to make up I wish you and your families, friends and acquaintances a very Healthy, Happy, and Prosperous New Year for 2008

Hello Iggy & welcome to the forums.