How do I configure Printfil to capture DosBox print jobs ?

DOSBOX is a DOS emulator, freely available at - Some Customers do use it to run their DOS programs; mainly on 64 bit Windows systems (that cannot run 16 bit software, like DOS, natively).
If instead you're using the vDos DOSBox variant, please see the faq: How to print from vDos.

How to configure Printfil to capture DOS print jobs run inside DosBox depends mainly by how the DOS program itself produces those jobs:

  1. The DOS program "prints to file" itself.
  2. The DOS program prints to a parallel port (LPT1: , LPT2: , LPT3:) or a serial port (COM1: , COM2: , COM3: , COM4:)

1) The DOS program "prints to file" itself

In this case you just have to point Printfil to the very same file name produced by the DOS program.

You can do it by inserting that file name in the "File to check" field at Configuration -> Standard
There's no need to select any COM Port or LPT port to capture in that configuration dialog.

As soon as the DOS program finishes printing, Printfil will capture the job-file and will show it on screen, if Preview is enabled at Configuration -> Standard, or will directly send it to the choosen Windows printer.

2) The DOS program prints to parallel ports (LPT1:, LPT2:, LPT3:) or serial ports (COM1:, COM2:, COM3:, COM4:)

In this case please note that the Standard DosBox build available at the link above does NOT support parallel port emulation, so, print jobs sent by a DOS program to (say) LPT1: in DosBox simply "disappears" and Printfil receives nothing to capture, even if you've selected the LPT1: port at Configuration -> Standard .

There are however special DosBox builds (DosBox SVN Daum and DosBox MegaBuild) that DO support parallel port emulation
The newer Printfil version automatically detects if DosBox SVN Daum or DosBox MegaBuild is installed on your Windows machine when selecting a LPT port to capture at Configuration -> Standard and asks you if you want to automatically configure DosBox to capture the selected COM port or LPT port.

So, in order to capture print jobs sent to the LPT1: , LPT2: , LPT3: , COM1: , COM2: , COM3: or COM4: port by a DOS program within DosBox you just have to:

  1. If it's a parallel port, install DosBox SVN Daum ( or DosBox MegaBuild (
  2. If you're using a previous Printfil version, upgrade your Printfil copy
  3. Go to Configuration -> Standard and select the LPT port or COM port you want to capture
  17 Nov 2016  
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