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- Path: news.aimnet.com!news
- From: JNavas@NavasGrp.com (John Navas)
- Newsgroups: comp.os.ms-windows.win95.setup,comp.sys.ibm.pc.hardware.comm,comp.dcom.modems
- Subject: Re: Loss of IO board facilities with Win 95
- Date: Sat, 20 Apr 1996 17:25:27 GMT
- Organization: The Navas Group of Dublin, CA, USA
- Message-ID: <31791daa.6273891@news.aimnet.com>
- References: <3171334b.122200990@news.demon.co.uk> <31719CFC.1A04@net-link.net> <4l3nrf$nkt@onramp.arc.nasa.gov>
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- [Posted to comp.dcom.modems]
- lamaster@viking.arc.nasa.gov (Hugh LaMaster) wrote:
-
- >In article <31719CFC.1A04@net-link.net>,
- >"Steven F. Johnson" <steve@net-link.net> writes:
- >|> Pinnell wrote:
- >|> >
- >|> > My P90 was shipped with a second IO board, enabling me to have two
- >|> > printer ports and four serials. All worked under Windows for
- >|> > Workgroups, including my Acer fax machine, but after installing Win
- >|> > 95, only the motherboard connections will work. I'm using a printer
- >
- >|> Under Windows 3.x, parallel and serial ports are polled, not interrupt
- >|> driven.
-
- Correction: under Windows 3.x, serial ports are interrupt driven.
-
- >|> Under Windows 95, though, both parallel and serial ports
- >|> _are_ interrupt driven. The ISA bus was not designed to share IRQs
- >|> across boards, so the standard configuration of COM1,2,3, and 4 using
- >|> IRQs 4, 3, 4, and 3 respectively typically won't work under Windows 95
- >|> unless the four ports are all on the same board, and on-board logic
- >|> arbitrates among them.
- >|>
- >|> You may want to try installing the COMM.DRV polled communications driver
- >|> for ports 3 and 4, but it you also want to use a modem on one of those
- >|> ports, you'll still run into some difficulties.
- >|>
- >|> My suggestion: configure your system so the mouse is on COM1, IRQ4, your
- >|> modem is on COM2, IRQ3, and forget the others. Ditto with LPT2: Just
- >|> use LPT1 on IRQ7...
- >
- >So, what do you do if you are trying to configure a new PnP type
- >modem like the "Motorola Lifestyle" on a PnP mboard under Win '95?
- >Specifically, Win '95 wants to configure the modem as "COM5", but,
- >virtually all the software only recognizes COM1-COM4 (mouse on COM2).
- >[Award PnP BIOS ?.??]. Is there way to override the automagic
- >setup? If you manually reconfigure it in "settings", it just thinks
- >there is *another* modem sitting on the hardware serial port.
- >
- >
- >--
- > Hugh LaMaster, M/S 233-18, Email: Please send ASCII documents to:
- > NASA Ames Research Center Internet: lamaster@ames.arc.nasa.gov
- > Moffett Field, CA 94035-1000 Or: lamaster@george.arc.nasa.gov
- > Phone: 415/604-1056 Disclaimer: Unofficial, personal *opinion*.
-
- --
- Best regards,
- John mailto:JNavas@NavasGrp.com http://web.aimnet.com/~jnavas/
- 28800 Modem FAQ: http://web.aimnet.com/~jnavas/modem/faq.html
-