DOSember Raster Bars on DOS using VGA @CallousCoder

Uploaded December 2021 | Updated September 2026, 5 hours ago

#doscember in this #dos #x86 #assembly tutorial, you wil learn how to draw rasterbars in VGA under DOS.
This will work on XT-Pentiums as long as theres a VGA card.

For DOSBox be sure to set
machine=vgaonly

Code:
github.com/rdoetjes/tuts/tree/main/dos/BARS

RASTER.ASM is the foundational code, on which all other code is build, and will only draw a single raster line.

RASTER2.ASM will show how to turn that single line in to a bar with a certain width

RASTER3.ASM will show how to shade the bar using a lookup table

RASTER4.ASM will show how to make the bar move along sine path, using a pre-calculated sine table.

DosBox environment:
subliminal-artist.com/assets/dosbox.zip

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