albers@ka3ovk.uucp (Jon Albers) (09/09/89)
How many ports do you have on your system? Most of the multi-port boards I have seen are up to 16 ports. Is that a limit for SCO XENIX/386 2.3.1? I presently have 2 Quadram Quadport-AT cards, for a total of 10 serial ports, but I need more (I would have no trouble with 20, modems+hardwire connections to other mini's in the office). What does SCO support? Jon -- | Jon Albers, IRS, Computer Services, Site Support and Installation(CS:M:S:P) | | UUCP: (drilex|infopro|teemc|tcsc3b2|ki4pv|wb3ffv)!ka3ovk!(root|albers) | | ARPA: JALBERS@SIMTEL20 Have Trailblazer, will connect................... | | ka3ovk: Compaq 386/25 Model 300 SCO XENIX-386 Sys V ver 2.3.1 |
root@nstar.UUCP (Larry Snyder) (09/09/89)
In article <1989Sep8.200323.294@ka3ovk.uucp>, albers@ka3ovk.uucp (Jon Albers) writes: > How many ports do you have on your system? Most of the multi-port boards I > have seen are up to 16 ports. Is that a limit for SCO XENIX/386 2.3.1? I > presently have 2 Quadram Quadport-AT cards, for a total of 10 serial ports, > but I need more (I would have no trouble with 20, modems+hardwire connections > to other mini's in the office). What does SCO support? I do believe that using the Computone cluster controller up to 64 ports can be used under SCO 2.3.2 using ttyi00-ttyi63 - plus since each port can actually be running TWO applications - (using a pre-defined control sequence) that makes for 128 processes running from the serial lines plus another 12 on the console. -- Larry Snyder SCO Xenix 2.3.2 '386 uucp: iuvax!ndcheg!ndmath!nstar!larry Computone Intelliport AT8 The Northern Star Usenet Distribution Site HST / PEP / V.22 Notre Dame, Indiana USA Home of the fighting Irish!
davef@lakesys.UUCP (Dave Fenske) (09/09/89)
My motto is: be nice to the people from the IRS and they will be nice to you. As far as I know, there is no limit on the number of ports, other than the practical ones. That is, when you run out of slots to plug boards into, or the response time is over a minute, you definietly have too many. I have several installations where the users use 17 serial ports on a 16Mhz 386, under SCO. I know of places where they use 34 ports. You need to be aware of several things. 1) More users require more memory. The general rule is .25 - .5 megs per user. 2) use serial cars from only one manufacturer in one machine (unless you feel adverturesome). 3) The more active users your have, the less resourses (cpu, disk, memory, etc) you have to go around. In short, the reasons are practical more than technical. DF
usenet@carssdf.UUCP (UseNet Id.) (09/11/89)
In article <1989Sep8.200323.294@ka3ovk.uucp>, albers@ka3ovk.uucp (Jon Albers) writes: > How many ports do you have on your system? Most of the multi-port boards I > have seen are up to 16 ports. Is that a limit for SCO XENIX/386 2.3.1? I I just installed the Computone Cluster with 2 16-Port boxes. No Trouble. Just follow instructions. The RJ45 telephone connectors are GREAT. Never again spending 15 min each crimping pins one at a time. I did have to make some short adapter cables to connect devices that were on the older Advantage boards that I took out. Only caveat, It took me a few hours to figure out that using the WY60's, the XON-XOFF has more margin for error. If you prefer to use DTR/CTSFLOW, then code the lines as "DEVICE", you will see in the instructions. It is realy no problem. The WY60 in DTR Handshake mode is extermely intollerant of extra characters after ready is droped. You put one board in the CPU Box, Then cable up to 4 16-port boxes into that, using clip in cables for each. Start with one or two and add more, WITHOUT OPENING UP THE CPU! Some of these boxes, like the Texas Inst are miserable to get in and out of. John Watson (Self Empl.) ...!rutgers!carssdf!usenet