nanogui: Thread: Is frame buffer necessary?

I want to port microwindows to eCos, and i had ported
Tvgalib(suit for isa vga card) to ecos. But i don't
sure that I must support frame buffer on ecos if i
want to port microwin.
the tvgalib has implement ReadPixel, DrawPixel,
DrawHorzLine, and DrawVertLine. please tell me is this
ok for microwindows?

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: I want to port microwindows to eCos, and i had ported
: Tvgalib(suit for isa vga card) to ecos. But i don't
: sure that I must support frame buffer on ecos if i
: want to port microwin.

There is an already-contributed eCos port in the CVS
Microwindows, look in the src/ecos directory for details,
this includes a working screen driver interface.

Regards,

Greg

I know that there is an already-contributed eCos
port,but it is not for x86 arch.and I just want to
port it to eCos for x86. Now i had Tvgalib working on
it,but i am not sure it is nessary to port framebuffer
when i port microwindows.
the Tvgalib had impletement
DrawPixel,readPixel,drawline,setpalette,but it doesn't
support framebuffer.please tell me is these enough to
port microwindows to eCos for x86? 
Thanks in advance!
--- Greg Haerr ####@####.#### wrote:
> : I want to port microwindows to eCos, and i had
> ported
> : Tvgalib(suit for isa vga card) to ecos. But i
> don't
> : sure that I must support frame buffer on ecos if i
> : want to port microwin.
> 
> There is an already-contributed eCos port in the CVS
> Microwindows, look in the src/ecos directory for
> details,
> this includes a working screen driver interface.
> 
> Regards,
> 
> Greg
> 


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: I know that there is an already-contributed eCos
: port,but it is not for x86 arch.and I just want to
: port it to eCos for x86. Now i had Tvgalib working on
: it,but i am not sure it is nessary to port framebuffer
: when i port microwindows.

Take a look at the drivers/scr_ecos.c.  It uses the lcd_init()
and lcd_getinfo calls, I'm not sure if this is for framebuffer
or not.  In any case, it should just be this single file that
you will have to modify for x86 eCos.



: the Tvgalib had impletement
: DrawPixel,readPixel,drawline,setpalette,but it doesn't
: support framebuffer.please tell me is these enough to
: port microwindows to eCos for x86? 

Yes, ReadPixil, WritePixil, and drawline are all that's
required, but it would be nice to have a blit routine.
So Tvgalib should work fine.
Otherwise, you can implement it like the SVGA driver,
which is probably similar.
See drivers/scr_svga.c for details.

Regards,

Greg




: Thanks in advance!
: --- Greg Haerr ####@####.#### wrote:
: > : I want to port microwindows to eCos, and i had
: > ported
: > : Tvgalib(suit for isa vga card) to ecos. But i
: > don't
: > : sure that I must support frame buffer on ecos if i
: > : want to port microwin.
: > 
: > There is an already-contributed eCos port in the CVS
: > Microwindows, look in the src/ecos directory for
: > details,
: > this includes a working screen driver interface.
: > 
: > Regards,
: > 
: > Greg
: > 
: 
: 
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: Make a great connection at Yahoo! Personals.
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