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Garbage on Screen with VGA_textmode
01-05-2016, 12:39 PM
Post: #3
RE: Garbage on Screen with VGA_textmode

Yeah, there are so many "generic parameters" it is hard to keep them all straight. I totally need to write up a bit more about the VGA_textmode ones.

However, as configured by default as Valentin mentions it is using 8KB of BRAM just for font data, and has a text screen and 16-color bitmap coming from SRAM.

If you try the File|Examples|f32c_VGATextConsole|f32c_VGAConsoleFeatures you should see the screen cleared (at least for a bit before it on purpose puts some "garbage" there to demo scrolling).

For a slightly better example, I have just updated f32c_VGATextConsole library with another example called "f32c_16ColorBMapTest".

[Image: SnrTJ5R.jpg]

Sorry about the lack of documentation (and a "moving target"). The f32c_VGATextConsole library does have a fairly complete set of "helper functions" to use the VGA at run time (and detect its configuration).

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RE: Garbage on Screen with VGA_textmode - Xark - 01-05-2016 12:39 PM

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