Message-ID: <4211E9A4.6010908@globaledgesoft.com>
Date: Tue, 15 Feb 2005 17:53:00 +0530
From: krishna <krishna.c@globaledgesoft.com>
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To: linux-os@analogic.com
CC: Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: What is the purpose of GPIO pins.
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Hi,

    NO,  Sorry I wasn't clear.
    I am asking about GPIO controllers used in HandHeld Devices.
  
Regards,
Krishna Chaitanya

linux-os wrote:

> On Tue, 15 Feb 2005, krishna wrote:
>
>> Hi all,
>>
>>   Can any one tell me the purpose GPIO pin serves.
>>   How are GPIO pins better than dedicated pins, considering hardware 
>> design view and for programming view.
>>
>
> Do you mean General Purpose I/O bits on a chip?
>             ^       ^       ^ ^
> If so, it is intended to live in the lower 16 megabytes of
> an ix86 machine (higher addresses are not decoded), and at one
> time, went to the ISA bus, but is now usually a simple
> asynchronous bus off from some bridge.
>
>> From a hardware perspective, it's slow. From a programming
>
> perspective, you don't care where it is.
>
>> Regards,
>> Krishna Chaitanya
>
>
> Cheers,
> Dick Johnson
> Penguin : Linux version 2.6.10 on an i686 machine (5537.79 BogoMips).
>  Notice : All mail here is now cached for review by Dictator Bush.
>                  98.36% of all statistics are fiction.
>
>
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