Is a parport fast enough?

To many things wrong there
-parallel port can NOT do all inputs in any of it's modes
-parallel port has 17 I/O in total, there are inputs 18 and 19 mentioned on the first post
so i agree with Cornholio, it is rubbish and will waste more time than asking humans
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Parallel port can do
-mode out = 12 out 5 in
-mode in = 13 in 4 out
-mode X = 8 out 9 in
And LinuxCNC can control multiple at the same time.

well... thanks for your help

I'm sorry but it's just like last time you asked for advice here:
forum.linuxcnc.org/27-driver-boards/5109...17x0?start=10#288989

You turn up with some hallucination and expect other people to make it come true for you.

Just get some cheap TB6600 drives, wire those directly to an old PC with parallel port, make the machine move.
No AI will help you with that, yet.

Sarcasm will defeat AI.
Have your Memes at the ready.

Personally, i do not mind such questions at all, the OP has given us some info to chew on, so no matter what question, it does deserve a reply.
-
To answer the question from the tittle:
Yes, parallel port is fast enough for a lot of things/machines/whatever as long as you consider the requirements in regards to port limitations.
I have Plasma, Mill, engravers, Styrofoam cutters, all using parallel port for over 10 years without a single issue, ever.
And at one point in time i used a parallel port with LinuxCNC and the included scope as an Oscilloscope/Logic Analyzer, just mind the 5V input limit.

it does deserve a reply.

Ok, I'll give it the benefit of the doubt.

So to start with some basics:
- your 'hal.ini' is not an '.ini' format but a '.hal' format.
- your 'config' would be called a 'hal component'

Whether PP is going to be fast enough will mostly depend on what kind of use you have in mind for the DAC.

Now before you make a PCB you may want to try and get that hal component of yours compiled and installed (prepend 'sudo' if you are on a package install):
halcompile --install <path/your_component.comp>

Once that hurdle is overcome you can then create a simulation config to test your custom component and your .hal file.
You can use the 'halscope' tool to check the output of your custom component:
linuxcnc.org/docs/devel/html/hal/tutoria...ec:tutorial-halscope

To get an idea of how a custom component file is structured see the components included in the source code:
github.com/LinuxCNC/linuxcnc/tree/master/src/hal/components

[edit]
Please keep in mind that presenting a ChatGPT spit out on a technical forum like this will most likely make you look like somebody who doesn't want to spend any time learning the basics. I know it may look like a good start to somebody who has no clue but to people who know just a little bit more it just simply looks like a serious lack of effort.