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Help using the MAX4455 On-Screen Video Generator

J

joe

Jan 1, 1970
0
I'm looking for some help programming the MAX4455 On-Screen Video
Generator. Let's say my graphic is the following:
0 | 0 | 15 | 15 | 15 | 15 | 0 | 0
0 | 0 | 0 | 0 | 0 | 0 | 15 | 0
15 | 0 | 0 | 0 | 0 | 0 | 0 | 15
15 | 0 | 0 | 0 | 0 | 0 | 0 | 15
15 | 0 | 0 | 0 | 0 | 0 | 0 | 15
15 | 0 | 0 | 0 | 0 | 0 | 0 | 15
0 | 15 | 0 | 0 | 0 | 0 | 15 | 0
0 | 0 | 15 | 15 | 15 | 15 | 0 | 0


My first question is reading out the first 8-pixels. I understand that
the first 4-pixels would be written as such:

QPL = 00000000;
QPH = 11111111;

Followed up by writing to the command register to write that into the
SRAM. Now to write out the remaining 4-pixels for line one, do I just
write out
QPL = 11111111;
QPH = 00000000;
Followed up by write to the command register to write that into the
SRAM. Am I correct so far?

Now here's where I get lost, doing the second line. I know what needs
to be written into the QPL/QPH register, but I don't understand how I
define that these pixels need to be placed on the second line and they
are not part of the first line?

If anyone could point me in the right direction I'll really appreciate
it.

Thanks,
joe
 
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