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: address@hidden
> > [mailto:address@hidden On Behalf Of Kirill
> > Kuprijanov
> > Sent: Tuesday, December 14, 2010 12:55 PM
> > To: address@hidden
> > 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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