Hello Joe - ---------- > > Well, COM4 traditionally uses the same IRQ as COM2, although not > simultaneously. Therefore, perhaps you can simply swap the addresses > of COM2 and COM4, by swapping the addresses vectors at memw[40:02] > and memw[40:06]?
You're on the right track. :-) I did realize I could just substitute 2E8H for 2F8H in the code and it would access COM4 _thinking_ it was COM2. A bit more complex since detection of existing ports etc. has to be adjusted along with this but basically I can fake it, yes. You must understand that the user interface for Oberon is not like anything you've seen so far and just uncompressing the source files and loading them into an editor is a chore (when you're not an expert at Oberon). I did rewrite the module required for COM4 then couldn't get the docs file for the compiler to display and couldn't find the right switches to recompile the new module! I've asked the Oberon experts for help with the compiler to get this new module into the system at bootup. Am hoping I won't need to recompile the entire kernel - will see how it goes. :-\ The experts are all finishing up their Ph.D studies right now and say they will be working on standardizing, upgrading, improving, etc. once they have completed their studies some time this year. Charles.Angelich DOS the Ghost in the Machine! Family And Friends wepages - Multimedia orginal stories with animation and sound, poetry, music, and photography: http://www.undercoverdesign.com/dosghost/faf Tech pages for DOS and W31 at: http://www.undercoverdesign.com/dosghost [...] > >Oberon update: > > > >I managed to find a version of Oberon that would install in > >one large file (30 meg) on an existing FAT partition. I then > >discovered it only supports COM1 and COM2. I need > >COM4 for my internal modem. To unsubscribe from SURVPC send a message to [EMAIL PROTECTED] with unsubscribe SURVPC in the body of the message. Also, trim this footer from any quoted replies. More info can be found at; http://www.softcon.com/archives/SURVPC.html
