Hi there, On Sun, 6 Feb 2022, Eric Auer wrote:
A quick thought... Given how fast modern CPU are relative to serial ports, could you just set a periodic timer to poll the status of all serial ports in case configuring their interrupts on PCI is too tricky? And then let the poll handler invoke your serial interrupt handlers when needed?
Thanks for the thought. Frankly I don't know if the performance and reliability of anything which tried to do it that way could ever be acceptable but I doubt it. In any, er, event it would need a lot more development and testing (which would be prohibitive) than a rewrite of the interrupt handling code. Unless there's some miracle DOS device driver in the post to me right now, at this point I think I'm more or less resigned to the rewrite. As I write I'm pulling the source archives out of mothballs to set up a build system. It's years since I built a DOS executable. -- 73, Ged. _______________________________________________ Freedos-user mailing list Freedos-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-user
