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Date: Fri, 3 Oct 2014 00:43:15 +0400
From: Slawa Olhovchenkov <slw@zxy.spb.ru>
To: Peter Jeremy <peter@rulingia.com>
Subject: Re: Removing disconnected tty drivers
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On Fri, Oct 03, 2014 at 06:06:36AM +1000, Peter Jeremy wrote:

> On 2014-Oct-02 16:33:52 +0400, Slawa Olhovchenkov <slw@zxy.spb.ru> wrote:
> >As I remember ISA/EISA and PCI different only in interrupt path.
> >All other logic is common.
> 
> From memory, the actual board access is different as well - the ISA
> boards have a memory-mapped window and you need to move the window
> around.  The PCI boards linearly map the board's entire memory space.

All cards have different window size. In PCI case windows size == memory size.
Also, ISA PC/Xi have windows size == memory size.
This is not significant difference.