13-06-2024, 05:21 PM
Hello All.
After quite an extensive look at the raster generation logic and complete replacement of most of it
to suit the new upscaled output, today I got to hook up a monitor and see what popped out.
To be honest, I wasn't really expecting much, if anything, as re-doing the logic was quite complex,
and took quite a lot of work with simulation as well.
Anyway, the first thing I checked was Vsync and Hsync timing with the CRO, and they were spot on.
The display is configured for 640 x 480 @ 75hz with vertical scaling to take the bee's normal [max] 275 lines
and convert it to 480 lines.
So, I hooked up a normal LCD monitor, and although the display is not perfect and there are things I'll need to
investigate further, this is the output I get :
As you can see, there is a bit of fixing to do, but I'm actually pretty pleased with the vertical scaling quality.
It's a pretty simple scheme I've implemented, but it's doing the job quite reasonably.
Anyway, I'll have to put it aside again to tackle assembly service jobs on the pick and place machine for the next week,
but I'll be keen to move this ahead as quickly as I can. I may have some time at night to make some progress in the next
few days as well.
After quite an extensive look at the raster generation logic and complete replacement of most of it
to suit the new upscaled output, today I got to hook up a monitor and see what popped out.
To be honest, I wasn't really expecting much, if anything, as re-doing the logic was quite complex,
and took quite a lot of work with simulation as well.
Anyway, the first thing I checked was Vsync and Hsync timing with the CRO, and they were spot on.
The display is configured for 640 x 480 @ 75hz with vertical scaling to take the bee's normal [max] 275 lines
and convert it to 480 lines.
So, I hooked up a normal LCD monitor, and although the display is not perfect and there are things I'll need to
investigate further, this is the output I get :
As you can see, there is a bit of fixing to do, but I'm actually pretty pleased with the vertical scaling quality.
It's a pretty simple scheme I've implemented, but it's doing the job quite reasonably.
Anyway, I'll have to put it aside again to tackle assembly service jobs on the pick and place machine for the next week,
but I'll be keen to move this ahead as quickly as I can. I may have some time at night to make some progress in the next
few days as well.