A fellow Pegasos user approached me for help regarding access of the Pegasos' parallel or game port in C. Being not really a developer myself, I hope someone of you can help Stany regarding his question - he asked already at the MDC but got no reply there yet. Many thanks in advance!

Here is what Stany told me:

"At moment I can't use the game port or parallel port on my Pegasos in C.

For my hobby I want to use these ports, but I need a good example to see how this is done.

I already asked at the MorphOS developer forum but didn't get a reply yet. But someone else asked for the following, too, which is exactly what I'd like to do as well. He wrote:

====================

Re: how to program the parallel port under AOS/MOS to communicate with
non-printer hardware in C/C++?

If the parallel.device driver can access the hardware, other code can do it too of course. I understand that that code might have to run at the OS level, what would require me to write a device driver... I would rather avoid that

I need the following features:

- write access to the 8 data lines (pin 2-9)
- read/write access to the strobe line (pin 1)
- read access to the Ack, Busy, PaperEnd, SelectIn and Error lines (pin 10-13 & 15 respectively)
- read/write access to the EPP/ECP address register
- read/write access to the EPP/ECP data register
- some means of control so select a register

====================

So, please, is there any way that someone could provide a good example in C for the Pegasos to use the parallel port i/o (like above) and the game port i/o...?

If I have a good example, I can find out how it works, and turn my Pegasos into my best computer. But without such an example, I'm unable to find it out myself. "

So far Stany's question. He did already program these ports on the C64 and the Amiga (as you will be able to read about in the next issue of Amiga Plus ), where he had examples for from a dutch electronics magazine. Again many thanks in advance for providing him also such an example for the Pegasos!

Hi

Does the MDC not have anything???