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RE: [lpc2000] LPC21XX as OSD Generator

2005-10-28 by Eric Rullens

> I don't remember the details, but I have seen several 
> reasonable (25-40 
> character/line) OSD displays as magazine projects over the 
> years. IIRC 
> even BYTE did one in its heyday, and I'd bet that Circuit Cellar 
> probbaly has one.
> 
> Yep here's one of the few that turned up on byte:-
> 
> http://www.circuitcellar.com/library/print/1199/Baptiste112/2.htm
> 
> Not too bad resolution wise, and it uses a PIC

You may want to read that again...

"Using an off-the-shelf OSD module saved me development time and
aggravation, and enabled me to concentrate on features instead of core
operations of the character display."

I think you can forget about bit-banging anything above low (/medium with
the improved chips) resolution with a LPC.

  Eric


> Leon Heller wrote:
> 
> >----- Original Message ----- 
> >From: "Onestone" <onestone@...>
> >To: <lpc2000@yahoogroups.com>
> >Sent: Friday, October 28, 2005 8:21 PM
> >Subject: Re: [lpc2000] LPC21XX as OSD Generator
> >
> >
> >  
> >
> >>There used to be a very old Microchip app note that showed 
> it being done
> >>with one of the very old PIC16c5x parts, so, even though 
> slow, if a PIC
> >>can do it I'm pretty certain the LPC2 could. I don't know 
> if it is still
> >>around, it was possibly one of their old competition winners. It was
> >>published in the enormous applications handbook of a few years ago.
> >>    
> >>
> >
> >I tried it several years ago. It was very crude - large time 
> display and it 
> >couldn't do anything else. The LPC could manage something 
> like that, but it 
> >probably isn't much use.
> >
> >Leon 
> >
> >---
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> >
> >
> >
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