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??? 04/23/07 17:18 Read: times	#137834 - HUH? Responding to: ???'s previous message
	in a video display subsystem, the driving and loading functions are synchronous.</i. if you have a 'loader', a 'driver' with a Dual Port Memory (DPM) etween them what synchronicity does the 'loader' need? As I stated in a previous post "if only half the pixels are updated per sweep (all of them after two sweeps), nobody will notice" Erik

List of 52 messages in thread

Topic	Author	Date
8051 to VGA		01/01/70 00:00
nope..... but i do know		01/01/70 00:00
Video		01/01/70 00:00
well, if throiughput is a problem		01/01/70 00:00
VGA vs. NTSC (OK, PAL)		01/01/70 00:00
especially on CRTs?		01/01/70 00:00
flicker		01/01/70 00:00
Distortion		01/01/70 00:00
until today...		01/01/70 00:00
Logical Processors		01/01/70 00:00
not likely ...		01/01/70 00:00
sure, but what problem is that		01/01/70 00:00
It's the demand for precise timing		01/01/70 00:00
Monochrome?		01/01/70 00:00
He may be a bit misguided		01/01/70 00:00
Ive used an spi interface		01/01/70 00:00
This is the arbitary display overlay jobby		01/01/70 00:00
A NICE VIDEO GENERATING AND PROCESSING EXAMPLE!!		01/01/70 00:00
Is it VGA?		01/01/70 00:00
Video Buffer		01/01/70 00:00
and a "video DAC"		01/01/70 00:00
Well there are ways and ways ....		01/01/70 00:00
but VGA is twice as fast		01/01/70 00:00
VGA Pixel rate is faster but ...		01/01/70 00:00
If the MCU can\'t do it all ...		01/01/70 00:00
how about this one		01/01/70 00:00
"stuffer"		01/01/70 00:00
it'd better be a really cheap MCU		01/01/70 00:00
why?		01/01/70 00:00
the guy who pays for it would notice.		01/01/70 00:00
why?		01/01/70 00:00
The extra MCU contributes nothing. Why use it?		01/01/70 00:00
because		01/01/70 00:00
TEXT => Pixels = character generator		01/01/70 00:00
sure, but		01/01/70 00:00
True, but only sometimes ...		01/01/70 00:00
HUH?		01/01/70 00:00
so ... which MCU has those built in?		01/01/70 00:00
those?		01/01/70 00:00
Here's what "those" are ...		01/01/70 00:00
options		01/01/70 00:00
working examples		01/01/70 00:00
Nice to think folks remember Don's "cheap video"..		01/01/70 00:00
What do you mean, Phillip?		01/01/70 00:00
A notion not to radical or heretical ...		01/01/70 00:00
I still think it's either/or and not both		01/01/70 00:00
Like the vhdl that you'll find		01/01/70 00:00
Here's an ARM7 Driving a VGA Display direct		01/01/70 00:00
75 Ohm?		01/01/70 00:00
75 Ohm it is...		01/01/70 00:00
dc motor		01/01/70 00:00
start a new thead - and be specific		01/01/70 00:00

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