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Re: [lpc2000] LPC2138, VGA, and SD/MMC

2005-07-28 by Peter Jakacki

The old 8088's could pull it off because they had external video driver 
chips. The early Macs relied upon the 68K cpu but still had plenty of 
external PLDs handling the mundane timing etc.

Look, if you use an external memory bus ARM, a 512KB or more <wide> 
SRAM, some logic, and a palette DAC you could display jpegs quite 
nicely. Yes, it would be nice if some of the VGA support could be built 
right into the ARM and then it would be a simple matter of bolting on 
some RAM and away we go.

The single-chip 2138 is probably out of the question for displaying 
jpegs as there are better alternatives plus the 512K memory is Flash and 
not suitable for frequently updated display memory.

Don't you just hate those cheap products that can display video so 
nicely? Of course if you made a million units it would make it a million 
times simpler.

*Peter*

jdarling@... wrote:

>I had thought of using something as a driver chip, but everything I've found is either too costly,
>over my head as far as skills go, or depricated.  Course then again this may be over my head 
>too :).  Honestly I didn't figure that VGA could be that difficult since the old 8088's could do it 
>and still have time to pull off simple graphics.  Maby an FPGA as a driver would be better,
>but my lack of knowledge in this section of the world puts me at a great disadvantage.
>

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