LPT

LPT

[Kirill Kuprijanov]

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

Re: LPT

[Vladimir 'φ-coder/phcoder' Serbinenko]

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On 12/14/2010 08:54 PM, Kirill Kuprijanov wrote:
> 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?
>
Currently GRUB has no LPT driver whatsoever. You would need to write
one. I suggest having look in our tree at ns8250.c (serial driver),
hello.c (module usage). As for how to write LPT driver, old DOS
documentation is usually of assistance (nothing changed there).
> Thanks in advance,
> Kirill
>
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> http://lists.gnu.org/mailman/listinfo/grub-devel
>


-- 
Regards
Vladimir 'φ-coder/phcoder' Serbinenko



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RE: LPT

[Jordan]

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.

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


_______________________________________________
Grub-devel mailing list
Grub-devel@gnu.org
http://lists.gnu.org/mailman/listinfo/grub-devel

Re: LPT

[Vladimir 'φ-coder/phcoder' Serbinenko]

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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
>
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> http://lists.gnu.org/mailman/listinfo/grub-devel
>
>
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> http://lists.gnu.org/mailman/listinfo/grub-devel
>
>   


-- 
Regards
Vladimir 'φ-coder/phcoder' Serbinenko



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Re: LPT

[Kirill Kuprijanov]

On 14.12.2010 23:23, Vladimir 'φ-coder/phcoder' Serbinenko wrote:
> On 12/14/2010 08:54 PM, Kirill Kuprijanov wrote:
>> 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?
>>
> Currently GRUB has no LPT driver whatsoever. You would need to write
> one. I suggest having look in our tree at ns8250.c (serial driver),
> hello.c (module usage). As for how to write LPT driver, old DOS
> documentation is usually of assistance (nothing changed there).

Does that mean LPT driver is actually a grub module (just to prove me right)? Then what about some 
code to show the splash itself? Should it be a second separate module or should I place it in some 
other place?

>> Thanks in advance,
>> Kirill
>>
>>
>> _______________________________________________
>> Grub-devel mailing list
>> Grub-devel@gnu.org
>> http://lists.gnu.org/mailman/listinfo/grub-devel
>>
>
>
>
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> http://lists.gnu.org/mailman/listinfo/grub-devel

Re: LPT

[Vladimir 'φ-coder/phcoder' Serbinenko]

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On 01/07/2011 03:18 PM, Kirill Kuprijanov wrote:
> On 14.12.2010 23:23, Vladimir 'φ-coder/phcoder' Serbinenko wrote:
>> On 12/14/2010 08:54 PM, Kirill Kuprijanov wrote:
>>> 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?
>>>
>> Currently GRUB has no LPT driver whatsoever. You would need to write
>> one. I suggest having look in our tree at ns8250.c (serial driver),
>> hello.c (module usage). As for how to write LPT driver, old DOS
>> documentation is usually of assistance (nothing changed there).
>
> Does that mean LPT driver is actually a grub module (just to prove me
> right)? 
I would write it as a separate module.
> Then what about some code to show the splash itself? Should it be a
> second separate module or should I place it in some other place?
>
It must be at least be in a separate file and use a sane interface to
LPT port. When it's done this way, whether it's compiled into separate
module or not is just 2 lines of change
>>> Thanks in advance,
>>> Kirill
>>>
>>>
>>> _______________________________________________
>>> Grub-devel mailing list
>>> Grub-devel@gnu.org
>>> http://lists.gnu.org/mailman/listinfo/grub-devel
>>>
>>
>>
>>
>>
>> _______________________________________________
>> Grub-devel mailing list
>> Grub-devel@gnu.org
>> http://lists.gnu.org/mailman/listinfo/grub-devel
>
>
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> http://lists.gnu.org/mailman/listinfo/grub-devel
>


-- 
Regards
Vladimir 'φ-coder/phcoder' Serbinenko



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Re: LPT

[Kirill Kuprijanov]

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?

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
>>
>>
>> _______________________________________________
>> Grub-devel mailing list
>> Grub-devel@gnu.org
>> http://lists.gnu.org/mailman/listinfo/grub-devel
>>
>>
>>
>> _______________________________________________
>> Grub-devel mailing list
>> Grub-devel@gnu.org
>> http://lists.gnu.org/mailman/listinfo/grub-devel
>>
>>
>
>
>
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> http://lists.gnu.org/mailman/listinfo/grub-devel

Re: LPT

[Vladimir 'φ-coder/phcoder' Serbinenko]

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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
>>>
>>>
>>> _______________________________________________
>>> Grub-devel mailing list
>>> Grub-devel@gnu.org
>>> http://lists.gnu.org/mailman/listinfo/grub-devel
>>>
>>>
>>>
>>> _______________________________________________
>>> Grub-devel mailing list
>>> Grub-devel@gnu.org
>>> http://lists.gnu.org/mailman/listinfo/grub-devel
>>>
>>>
>>
>>
>>
>>
>> _______________________________________________
>> Grub-devel mailing list
>> Grub-devel@gnu.org
>> http://lists.gnu.org/mailman/listinfo/grub-devel
>
>
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> http://lists.gnu.org/mailman/listinfo/grub-devel
>


-- 
Regards
Vladimir 'φ-coder/phcoder' Serbinenko



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