Re: LPT

["Vladimir 'φ-coder/phcoder' Serbinenko" <phcoder@gmail.com>]

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On 02/10/2011 09:57 PM, Kirill Kuprijanov wrote:
> Hello,
>
> so I'm nearly finished with couple of modules:
>
> 1. isa_lpt - to do the direct business with usual LPT ports
> 2. lpt - to interface any number of usual and unusual (say, PCI add-on
> cards) ports
> 3. t6963 - very special module to show pictures on my LCD (with
> internal toshiba 6963-compatible controller). This is where I gave up
> doing things 'the universal' way and had lots of distinct things (like
> pixel size and controller interface of the LCD).
>
> Now I have two more question:
> 1. how to make delays of 200ns in code?
> Oh, yes, I've noticed there is a function to make microsecond waits,
> but still, is there a way to make nanosecond wait?
>
> 2. what to do next? I have a local branch of bazaar repo and commit to
> it. What to do next with it?
>
<short answer>
Could you send the patches here?
> On 15.12.2010 02:22, Vladimir 'φ-coder/phcoder' Serbinenko wrote:
>> On 12/15/2010 12:06 AM, Jordan wrote:
>>> Kirill,
>>>
>>> Creating a new module is the easy part.  As a newbie myself, recently I
>>> found this blog helpful:
>>> http://blog.fpmurphy.com/2010/06/grub2-modules.html
>>> .
>>>
>>> As far as writing C or assembly code to talk to the LPT port, there are
>>> plenty of articles out there (like this one:
>>> http://logix4u.net/Legacy_Ports/Parallel_Port/A_tutorial_on_Parallel_port_In
>>>
>>> terfacing.html ) that show what I/O addresses are generally used for
>>> what.
>>>
>>>
>> If you use any external code (there shouldn't be any need), please first
>> tell which code it is, so we can check for license compatibility
>>> Jordan Strub
>>>
>>> -----Original Message-----
>>> From: grub-devel-bounces+jordan=tystent.net@gnu.org
>>> [mailto:grub-devel-bounces+jordan=tystent.net@gnu.org] On Behalf Of
>>> Kirill
>>> Kuprijanov
>>> Sent: Tuesday, December 14, 2010 12:55 PM
>>> To: grub-devel@gnu.org
>>> Subject: LPT
>>>
>>> Hello,
>>>
>>> I have a motherboard with LCD indicator attached to it's LPT port. I
>>> would
>>> like to make grub show
>>> some early splash screen on it. All the things regarding protocol
>>> and pin
>>> assignments are ok, as I
>>> already have a programm to show stuff on LCD from OS (Debian). So the
>>> question is "how to make a
>>> grub module that is capable of setting levels on LPT pins?" and a
>>> second one
>>> is "how to make use of
>>> it during bootup procedure?
>>>
>>> Thanks in advance,
>>> Kirill
>>>
>>>
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>>>
>>>
>>>
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>>>
>>
>>
>>
>>
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>
>
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-- 
Regards
Vladimir 'φ-coder/phcoder' Serbinenko



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