DOSBox is 100% emulated, nothing is virtualized. This means that none of your actual computer hardware is accessible from programs running within DOSBox.

The direct access to serial ports will be in the next version.

Mirek

mirekluza wrote:

The direct access to serial ports will be in the next version.

That's cool 😀 What about the parallel/printer port? 😀

Freddo wrote:

That's cool 😀 What about the parallel/printer port? 😀

Sorry, no. Only serial ports.

Mirek

😲
I'm waiting for that !
It will be a revolution 😁 in industry because to maintain old systems, users have to buy new hard and (not so good) new softwares to replace lot of good old industrial softwares wich uses COM ports.
Then DOSBox will solve a lot of problems.
On some machines for example only some DOS software will run in DOXBox on XP. Will then be normal to pay for XP? and not for DOSBox ?

You make a great work ! 😲

A bientôt!

Jean-Pierre

There is another free DOS emulator that is a little bit more tricky to configure but it has functionallity for COM and LPT.
http://bochs.sourceforge.net/

KalleKula Sweden wrote:

There is another free DOS emulator that is a little bit more tricky to configure but it has functionallity for COM and LPT.
http://bochs.sourceforge.net/

Bochs isn't a DOS emulator - it's a complete PC emulator. And it isn't "a little bit more tricky", but much more tricky, and it requires a copy of DOS, and much more resources than Dosbox does. It's quite good when, say, you're developing an OS, but for running old DOS programs/games it's not.

JAL

So old style serial ports dont work in XP? Never knew that 😒.

I`d always presumed that practicly any sort of computer would work with it (486 upwards).

That's right!
The serial port isn't working very well for DOS-applications under XP.
--> the transfer is very slow because the CPU runs at 100% capacity!
What means "The direct access to serial ports will be in the next version."
Is it allready implemented in Version 0.62? I adapted the .conf, but I get the message:
Opening Windows serial port
Unhandled INT 14 call 3
😳

Thamks

belinea wrote:

What means "The direct access to serial ports will be in the next version." Is it allready implemented in Version 0.62? I adapte […]
Show full quote

What means "The direct access to serial ports will be in the next version."
Is it allready implemented in Version 0.62? I adapted the .conf, but I get the message:
Opening Windows serial port
Unhandled INT 14 call 3
😳
Thamks

Yes, it is in DOSBOX 0.62 (in Windows version only, not on Linux etc). See "directserial" section in DOSBOX.CONF. I have never used it, so I cannot tell anything more to it.

Mirek

Thank you for your answer!
Here my settings in the DOSBOX.conf:
directserial=true
comport=1
realport=COM1
defaultbps=4800
parity=o
bytesize=8
stopbit=1

Hope someone will find out how to fix the problem.. 🙄

thanks

What were to happen if you were to set Parity to '0' (As in zero, the number) rather than o

belinea wrote:

Unhandled INT 14 call 3

That's some old software you've got there. Those are part of the BIOS's old serial routines. I implemented the port passthrough, but not the old BIOS hooks at INT 14. In short, to get this app to work more coding will have to be done with the serial passthrough. I'll see what I can do.

Magamo wrote:

What were to happen if you were to set Parity to '0' (As in zero, the number) rather than o

Does 'o' stand for 'odd' ?

I was hoping to use DOSBOX for a number of old applications that I have that will not run under XP because of their serial port access.

I tried the current version - no luck. Anything you can do to fix would be appreciated.

I am waiting for it to work also. I have an old dos program for programming radios, It requires a slow 486 computer. The program runs but i cannot send data out of the serial port.

Hello

I'am also interested in getting the COM Port running for old DOS software.
This would be very nice .
Thank you.
Robert

Both fossil and comport access through the DOS device drivers is not available in DosBox. I'm fairly sure the lack of these two things is what's causing your problems. Only direct serial access works inside DosBox.

I am trying to do the same thing. Please post any results.