Read the instructions to install it and register it with NTVDM. Virtual DOS blocks port access. Newer machines don't have DOS so you would need to add DOSBOX or FREEDOS.
PortTalk requires you to run an EXE program when you assign the port base address to read. Once it is enabled, it can read the other addresses on that register like 0x378(hex must be used to access) can also read 889 and 890. This will work until the next reboot.
QB64 can use INPOUT32.DLL to read with INP32 and OUT32. I gave the link above.
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|Response Title||Author and Date|
|printer issues||Leon Schrecengost on Apr 13|
|PortTalk||on Apr 14|
|printer issues||on Apr 22|
|Yeah that works, but no command line||on Apr 22|
|printer issues||on May 10|