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Adding ten or so serial ports?
Need to buy a server at work that will allow the addition of ten (at least)
serial ports (without going into what we're doing it needs lots of serial interfaces. Lindy do a range of cards, including an eight-way at around £90+vat. The server will probably be a Dell, and will be running Windows 2000/.net Server. Never having ever tried to add more in the com port area than a couple of modems I'm slightly unsure of what to expect. In the good old days there wouldn't be enough spare IRQs, should I assume that PNP/ACPI will take of it and that Windows will happily support and communicate with that many ports? Any advice gratefully received. regards Paul -- paul at spamcop.net |
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Rob Morley wrote in news:MPG.19865794fc5279809896c9
@news.cis.dfn.de: I think you'll find that the multiport card uses only a single interrupt. Windows itself can handle up to 255 serial ports. Didn't know that (about the single IRQ) - guess that should make life a lot easier? regards, Paul -- paul at spamcop.net |
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"Alien Zord" wrote in news:bfj07s$fcabq$1@ID-
172721.news.uni-berlin.de: Haven't you asked this question before? Nope (I think I once asked about low-end modem racks, but this isn't for modem use). Anyway, look he http://www.comtrol.co.uk/product.html That's useful - aby idea what the functional difference is between those, at around £400 and the ones at Lindy for £90 or so? regards Paul -- paul at spamcop.net |
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"Paul Hutchings" wrote in message
. 1.4... "Alien Zord" wrote in news:bfj07s$fcabq$1@ID- 172721.news.uni-berlin.de: Haven't you asked this question before? Nope (I think I once asked about low-end modem racks, but this isn't for modem use). Anyway, look he http://www.comtrol.co.uk/product.html That's useful - aby idea what the functional difference is between those, at around £400 and the ones at Lindy for £90 or so? I've never used the Lindy's products but the intelligent multiport serial cards from Multitech or Comtrol use on-board processor that requires a single interrupt and can drive all ports at full speed simultaneously. Up to 4 of them can be fitted in a system. The Lindy's card appears to contain individual UARTs requiring separate interrupt each and PIO operation requiring lots of CPU power. Last time I bought (trade) either a Multitech or Comtrol boards I paid around 150+VAT for 8 port model. The Comtrol's web price seems pretty steep. Multitech products he http://www.multitech.com/PRODUCTS/ISI/ |
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