Re: BOOK: OS/2 Warp Unleashed, 4th Edition cancelled

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Article #4607

#4607

From: John Summerfield
Date: Fri, 25 Jul 1997 00:00

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In <5r8t0g$l0q$1@glisan.hevanet.com>, wbg@hevanet.com (wbg) writes:
]z@deltrak.demon.co.uk> <5qvvfa$9h2@news.nternet.net> 
]<c1.01.2Gw8XV$17q@cretin.summerfield.network>:
]Organization: Hevanet - Portland's Internet Provider   Voice: 503-228-3520
]Distribution: 

]John Summerfield (summer@summerfield.network) wrote:

]<WRT IRQs>
]: In any event, 16 (15 actually) is plenty: the AT (ISA) bus design is the 

]: John Summerfield

]I must take exception to your assertion, Mr. Summerfield. If we both had 
]the time, I could send you the details of at least half a dozen Wintel
]configurations that have passed through our shop recently where 15 IRQs

15 is plenty IF they can be shared. The ISA bus doesn't allow it.

The thumping great IBM mainframes I used to work with only had the ability
    to recognise an I/O interrupt: not a different one for each device or 
    even each controller. They worked well with hundreds of devices.

the CPU can only service one interrupt at a time. If any new interrupts 
    remain pending, they can be serviced when the CPU has time.

The ISA bus design does not allow them to remain pending.

Cheers
John Summerfield
Perth, Western Australia
OS2 support, IBM ftp search, LAN configuration info
   @ http://www.iinet.net.au/~summer/

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From: summer@summerfield.network (John Summerfield)
Subject: Re: BOOK: OS/2 Warp Unleashed, 4th Edition cancelled
Date: 1997/07/25
Message-ID: <c1.01.2GyLw3$18E@cretin.summerfield.network>
X-Deja-AN: 258793636
Sender: summer@maximus.summerfield.network
References: <5fcrh0$s3p@nnrp1.news.primenet.com> <5j1KzoHpvmFW092yn@skypoint.com> <5gfsb7$q8n@camel0.mindspring.com> <3337edbc.1987900@news.axion.bt.co.uk> <33329320.33D1@ibm.net> <33AC89F6.7F71@info-net.it> <5qoa91$61d$4@news1.telenordia.se> <869410485sn <5r8t0g$l0q$1@glisan.hevanet.com>
Organization: OS/2 Support
Reply-To: Summer@iinet.net.au (John Summerfield)
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