Date: Wed, 21 May 1997 02:23:49 +0930 (CST) From: Michael Smith <msmith@atrad.adelaide.edu.au> To: terry@lambert.org (Terry Lambert) Cc: msmith@atrad.adelaide.edu.au, dfr@nlsystems.com, se@FreeBSD.ORG, current@FreeBSD.ORG Subject: Re: Backwards compatibiliy for isa_driver Message-ID: <199705201653.CAA04043@genesis.atrad.adelaide.edu.au> In-Reply-To: <199705201651.JAA01507@phaeton.artisoft.com> from Terry Lambert at "May 20, 97 09:51:29 am"
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Terry Lambert stands accused of saying: > > It means that "ISA" instances of a device can only be expected in the > > range 0x100-0x400, but that if the motherboard chipset is broken or > > old, probes at higher multiples of the device's address may still show > > it up. This is not normally a problem, as you only go above there for > > EISA/PCI devices. > > This is not a motherboard problem. This is a card line decoding problem. Agreed, however many modern motherboards work around it by only forwarding accesses in the 0x100-0x400 range to the ISA bus. > Terry Lambert -- ]] Mike Smith, Software Engineer msmith@gsoft.com.au [[ ]] Genesis Software genesis@gsoft.com.au [[ ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ ]] realtime instrument control. (ph) +61-8-8267-3493 [[ ]] Unix hardware collector. "Where are your PEZ?" The Tick [[
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