paulr@prapc2.UUCP (Paul Raulerson) (10/24/88)
I need to know how to get uPort to recognize COM3 &4 without purchasing an intelligent communications card. I tried the simple expeidient of telling ttypatch to create com3, with the interrupt structure as so: IRQ=4, BASE=3e8H which DOS recognized right away, but uPort choked on. I assume by this failure I have to play games with the kernal, or more specifically with the asy driver in the kernal. I looked in the dfile.wini configuration file and found that the max number of serial ports supported was 4, but am at a loss what else to change to make things happy. The line printer seems to have three vectors, while the asy driver seems to have only 2, should I "steal" one of the unused line printer vectors? Any input/help would be much appreciated! Thanks -- Paul Raulerson & Paul Raulerson & Associates +---------------------------+ Data/Voice: 1+215-275-2429 / 1+215-275-5983 | Always Aim To Please ... | Cis: 71560,2016 Bix: paulr | Always Aim High ... | UUCP: ...!rutgers!lgnp1!prapc2!paulr +---------------------------+
john@wa3wbu.UUCP (John Gayman) (10/27/88)
In article <71@prapc2.UUCP>, paulr@prapc2.UUCP (Paul Raulerson) writes: > I need to know how to get uPort to recognize COM3 &4 without > purchasing an intelligent communications card. I tried the simple I beleive the problem has something to do with sharing interrupts. I know a freind tried the basic 4-port serial card found at computer shows and it also choked. Microport (and other Unix's) like the boards that use one interrupt for all the ports on that card. It doesnt have to be intelligent. Usually at the computer shows they will have two flavors of small, cheap 4-port boards. One is a standard Com1-4 and the other is listed as a Xenix board. The Xenix flavor usually has all ports driven from a common interrupt. Im using an 8-port "dumb" Digiboard with all 8 ports using IRQ 3. John -- John Gayman, WA3WBU | UUCP: uunet!wa3wbu!john 1869 Valley Rd. | ARPA: john@wa3wbu.uu.net Marysville, PA 17053 | Packet: WA3WBU @ AK3P