The number of available file handles can be changed in DOSBox by recompiling only. In Windows XP it's a little easier: edit the file C:\Windows\system32\config.nt (assuming Windows XP is installed in C:\Windows). There's a line in there that, by default, reads "files=40". The maximum value for it is 255.

Edit: It doesn't actually seem to work for this program, so something else is going on. Hooray for crappy software with bad error messages.

This app wants the addresses for INT 1 and INT 3 to point at an IRET instruction, which I guess is to ensure a debugger isn't active. DOSBox's default handler calls its internal callback before the IRET, which the paranoid app doesn't like and comes up with the bogus error about the amount of files. I've attached a small TSR program that points the two interrupts at an IRET, which allows the app to get to its main menu. If there are further problems, which wouldn't surprise me, you could try booting real DOS inside DOSBox; or perhaps use a more general-purpose DOS virtualization software.

Thanks for the patch this seems to work fine. Though I have to run this exe every time I open DOSBOX. But its ok as I can atleast run the application. Waiting the DOS BOX to incorporate this wonderfull utility in the main application.

Thanks

-> [autoexec]

Thanks for the patch this seems to work fine. Though I have to run this exe every time I open DOSBOX. But its ok as I can atleast run the application. Waiting the DOS BOX to incorporate this wonderfull utility in the main application

That's why there is an autoexec section in the dosbox.conf 😀
Or you could write a small batch file with both the ireti program and your program in it, so you only have to start the batch and both will be run...

Edit: NOOOO... hal beat me to it 😀

visitor wrote:

Thanks for the patch this seems to work fine. Though I have to run this exe every time I open DOSBOX. But its ok as I can atleast run the application. Waiting the DOS BOX to incorporate this wonderfull utility in the main application.

Thanks

Don't hold your breath. DOSBox doesn't incorporate utilities.

still the pointing them at an iret in non-debug mode might make sense

It working. Now my question is that is there any way that by clicking the DOSBOX exe I straight away open this application. Is it possible as I have to mount the drive again and again and also run this utility.

Thanks

yes, that is possible

visitor wrote:

It working. Now my question is that is there any way that by clicking the DOSBOX exe I straight away open this application. Is it possible as I have to mount the drive again and again and also run this utility.
Thanks

Qbix wrote:

yes, that is possible

h-a-l-9000 wrote:

-> [autoexec]

We are talking about the [autoexec] section in DOSBox configuration file (usually called dosbox.conf). 😉