53da6b7171
an hardcoded demo
...
prints "RE", a vertical line, and a counter
2021-07-03 16:42:32 +02:00
1764a5f2b3
line buffer dynamic update
2021-07-03 15:44:01 +02:00
9eaf78d6b5
introduced line buffer of 160 pixel
2021-07-03 15:02:01 +02:00
77b1858311
using a prescaler (eg /64) may lead to horizontal offset errors
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because 1cycle off actually means many cycles off (eg 64)
2021-07-03 12:05:49 +02:00
2abac03779
semi working timer for skipping back porch
2021-07-03 11:54:31 +02:00
48da25958e
back porch skipping, wasting clock cycles, basically
2021-06-28 21:54:25 +02:00
1f3f3f36f2
line, frame as words (16 bit)
2021-06-28 21:38:39 +02:00
0448c64be4
do nothing while not in interrupt
2021-06-27 23:08:47 +02:00
f3ce016a06
vertical line, scrolling from left to right
...
sufficiently handles the back/front porch without disrupting the sync
signal
todo improvement: compute a sensible amount of cycles to waste during
the porch
2021-06-27 22:37:11 +02:00
14fd0412d4
something strange is happening
2021-06-27 21:57:02 +02:00
97e0ff26fa
"diagonal line"
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not the whole screen, but vertically locked
actually it has some issues, there is a single dot (at the
end/beginning of a cycle) that messes up the horizontal sync and moves
all the picture... must be fixed
2021-06-26 23:42:23 +02:00
29990cd93a
"diagonal line"
...
not vertically locked, just a test
also not the whole screen, just a bit
2021-06-26 22:34:22 +02:00
b7004a0171
first commit
...
vertical line at about 1/3 of the horizontal line
2021-06-26 19:15:17 +02:00
