Well, I tried to find something (like a recent change in code, perhaps) that could justify this, with no luck. On the other hand, this issue has been reported again recently, so something is really going on here...
The really bad thing is that I currently don't have access to a multi-serial board in order to test things. I've seen that USB hubs (or maybe their drivers?) sometimes appear as if they lock concurrent port access. I am not the most appropriate person to follow low-level specs and controller capabilities, but I've seen articles like this: http://www.avsforum.com/t/1277379/recommendation-please-most-reliable-self-powered-7-port-usb-hub which suggest that low-level hubs may indeed have a problem allowing concurrent access to all ports. I've seen terms like " *Supports 4 Concurrent Non-periodic Transactions* ". I guess that all of these references have something to do with the hub's ability to allow concurrent port access and how many individual controllers they have (i.e. ports per controller ration). Do you or anybody else know something about it??? Needless to say that such hubs have a cost of $50 - $100 + - check this one: http://www.cooldrives.com/12poinusb20h.html and have nothing to do with the $10 hubs found in every stupid accessory store... On Thursday, July 26, 2012 9:54:21 PM UTC+3, MaxX wrote: > > > modems via USB ... > pl2303: Prolific PL2303 USB to serial adaptor driver > > -- You received this message because you are subscribed to the Google Groups "SMSLib Discussion Group" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msg/smslib/-/7Izn--7Q9_UJ. For more options, visit https://groups.google.com/groups/opt_out.
