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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 18:51:58 GMT
- Organization: The Navas Group of Dublin, CA, USA
- Message-ID: <31793095.11117484@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]
- >In article <31719CFC.1A04@net-link.net>,
- >"Steven F. Johnson" <steve@net-link.net> writes:
-
- >|> Under Windows 3.x, parallel and serial ports are polled, not interrupt
- >|> driven.
-
- Correction -- under Windows 3.x, 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.
-
- Actually, it often will, assuming you have decent hardware, just as it did
- under Winndows 3.x. On one of my Win95 systems I run one modem on COM1
- (3F8/4) and another on COM3 (3E8/4), just not at the same time.
-
- >|> You may want to try installing the COMM.DRV polled communications driver
- >|> for ports 3 and 4, ...
-
- Bad idea, and it won't help.
-
- --
- Best regards,
- John mailto:JNavas@NavasGrp.com http://web.aimnet.com/~jnavas/
- 28800 Modem FAQ: http://web.aimnet.com/~jnavas/modem/faq.html
-