Subject: Re: What do you think?
To: None <port-dreamcast@netbsd.org>
From: None <David@ixibbs.iximd.com>
List: port-dreamcast
Date: 04/30/2001 16:06:12
If ISA isn't native to SH4, what kind of buses are? If the BBA "in a
sence" is a PCI device then is PCI native to SH4.
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IN>>>>>> "David" == David <David@ixibbs.iximd.com> writes:
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IN> David> So let me see here, does that mean that ISA is a machine Dependent
IN>
IN>Every bus is machine dependent. Often some code can be shared if
IN>there exists implementations of the bus for multiple machine
IN>architectures, though. So much of the PCI bus implementation is
IN>machine independent for example. But there must always be some
IN>machine dependent code to handle the mapping to the actual bus
IN>hardware (typically by allocating memory access tags and interrupts).
IN>
IN>
IN> // Marcus
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