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  #1 (permalink)  
Old 08-09-2005, 02:17 AM
fahadislam2002
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Default can use bram for VGA

hi..........
in sparton-2 ......for disply(VGA) controller ...i wann
use bram...........can??????how????????

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  #2 (permalink)  
Old 08-09-2005, 06:04 AM
Antti Lukats
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Default Re: can use bram for VGA

"fahadislam2002" <[email protected]> schrieb im
Newsbeitrag news:[email protected]
> hi...........
> in sparton-2 ......for disply(VGA) controller ...i wanna
> use bram...........can??????how?????????
>


there is no sparton-2 to my knowledge. in spartan-2 you can use BRAM for any
purpose, including VGA.

Antti


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  #3 (permalink)  
Old 08-09-2005, 08:05 AM
Peter Alfke
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Default Re: can use bram for VGA

fahadislam,
it is about time you grew up and stopped using these insane
punctutions.
It would also help if you learned how to spell.
Perhaps you might even learn to think, if that is not asking for too
much..
This is not a childrens' playground.
If you want to mix with adults, behave like an adult.

Peter Alfke

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  #4 (permalink)  
Old 08-09-2005, 06:17 PM
fahadislam2002
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Default Re: can use bram for VGA

> Antti Lukatswrote
"fahadislam2002
<[email protected]> schrieb i
> Newsbeitrag news:-tqdnXj1L7ewa2rfRV[email protected]
> hi..........
> in sparton-2 ......for disply(VGA) controller ...i wann
> use bram...........can??????how????????
>
>

there is no sparton-2 to my knowledge. in spartan-2 you can use BRA
for an
purpose, including VGA

Antti[/quote:b747d214ff

sorry for miss spell ... I know we can use BRAM for any purpose ..
But i wanna ask is it possible tyo accomodate Bram for VGA as minimu
resolution is 640*480 and minimum 8 colors needed ... so need 30720
pixel data to store and each pixel data of 3 bits ... while BRAM i
of 32 kb ... can u guide if possible ... 8

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  #5 (permalink)  
Old 08-09-2005, 06:17 PM
fahadislam2002
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Default Re: can use bram for VGA

> Peter Alfkewrote
fahadislam
> it is about time you grew up and stopped using these insan
> punctutions
> It would also help if you learned how to spell
> Perhaps you might even learn to think, if that is not asking fo

to
> much.
> This is not a childrens' playground
> If you want to mix with adults, behave like an adult
>
> Peter Alfk

Hi ..
Sorry for miss spell and any other fault if u felt on my sid
... 8)
after that i will simply say that i feel we r engineers and so no
here to pick sentex errors .... try to be logical .... 8)
thats true that i m week in my spell ....... but i will no
change my style of writing for any one... we r here to discuss idea
... so be clear and focus on concept instead of sentex ... 8)
thats also true that ...i m new in that field ... so if u o
seniour or on adult side ... be clear to proof ur concepts and to hel
others... 8)

anyways thanks for responding ... as u r my seniour ... so again i
sorry if any fault done by me ... 8) .......
Waiting for ur logical response ....... 8

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  #6 (permalink)  
Old 08-09-2005, 06:52 PM
Paul Marciano
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Default Re: can use bram for VGA

Peter Alfke wrote:
> fahadislam,
> it is about time you grew up and stopped using these insane
> punctutions.
> It would also help if you learned how to spell.
> Perhaps you might even learn to think, if that is not asking for too
> much..
> This is not a childrens' playground.
> If you want to mix with adults, behave like an adult.
>
> Peter Alfke


Wow Peter, why don't you just come out and say what you think?

Thanks for giving me a chuckle this morning.

:-)

Paul.

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  #7 (permalink)  
Old 08-09-2005, 07:46 PM
Andy Peters
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Default Re: can use bram for VGA

fahadislam2002 wrote:
> sorry for miss spell ... I know we can use BRAM for any purpose ...
> But i wanna ask is it possible tyo accomodate Bram for VGA as minimum
> resolution is 640*480 and minimum 8 colors needed ... so need 307200
> pixel data to store and each pixel data of 3 bits ... while BRAM is
> of 32 kb ... can u guide if possible ... 8)


After you learn to spell, you could learn to do some simple arithmetic.

How much BRAM is available in your device? Call this "A."

How much memory is needed for your frame store? Call this "B."

If B > A, then you're hosed.

-a

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  #8 (permalink)  
Old 08-10-2005, 10:16 AM
fahadislam2002
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Posts: n/a
Default Re: can use bram for VGA

> Andy Peterswrote
fahadislam2002 wrote
> sorry for miss spell ... I know we can use BRAM for any purpos

..
> But i wanna ask is it possible tyo accomodate Bram for VGA a

minimu
> resolution is 640*480 and minimum 8 colors needed ... so nee

30720
> pixel data to store and each pixel data of 3 bits ... while BRAM i
> of 32 kb ... can u guide if possible ... 8
>

After you learn to spell, you could learn to do some simpl
arithmetic

How much BRAM is available in your device? Call this "A.

How much memory is needed for your frame store? Call this "B.

If B > A, then you're hosed

-a[/quote:4de8ef679f

today i feel my mathamatics is also weak 8) ... Actually my questio
was just that is it possible by using some kind of techniques lik
compression etc /// and if possible then how and by using whic
techniques 8) ... thanks 8

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  #9 (permalink)  
Old 08-23-2005, 12:45 PM
Andreas Ehliar
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Default Re: can use bram for VGA

On 2005-08-10, fahadislam2002
<[email protected]> wrote:
> today i feel my mathamatics is also weak 8) ... Actually my question
> was just that is it possible by using some kind of techniques like
> compression etc /// and if possible then how and by using which
> techniques 8) ... thanks 8)


It depends on what you want to achieve. A regular bitmapped display
is out of the question since you don't have enough memory.
If you need to show simple images only with large fields of the same
color you could use some sort of RLE compression to dramatically
reduce the memory requirements.

However, if you want to show mostly text you could create a
character generator hardware. You have one memory with
information about what characters you want to show and one
memory with information about how the characters look.

Say that each character is 8x8 pixels large. If you want
to store 256 different characters this will take 2048 bytes.

With 8x8 pixel large characters you can store up to 80x60
characters on a standard VGA sized screen. (4800 bytes)

See http://www.fpga4fun.com/GraphicLCDpanel3.html for
some inspiration.

By drawing characters in a clever fashion you could
even include some graphics on your display. It is
also possible to include colors in the characters if
you increase the size of the font rom. This is basically
how the graphics worked on old video game consoles such
as the NES and SNES.

/Andreas
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