C128‘s VDC vs IBM XT‘s CGA: 16 Color Graphics using the 30 year old VDC-Basic extension

Опубликовано: 09 Апрель 2026
на канале: The 8 Bit Theory
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This video compares the C128's VDC chip to the IBM-PCs CGA technology.
It shows how CGA-Lowres graphics in 160x100 resolution with 16 colors can be displayed on the VDC-chip.
Programming is done in Commodore Basic 7, introducing a 30-year old Basic extension called VDC-Basic.

Find the german version of this video here:    • C128 zeigt CGA in 16 Farben bei 160x100. M...  

Sources shown in the video:
https://github.com/The8BitTheory/vdc-...

VDC-Basic documentation, sources and binaries:
https://github.com/The8BitTheory/vdc-...

The blog that acted as inspiration to this:
https://bumbershootsoft.wordpress.com...

CGA-Lowres mode explained:
https://int10h.org/blog/2015/04/cga-i...

Complete list of all CGA-Lowres games:
https://nerdlypleasures.blogspot.com/...

Paku Paku project website:
https://deathshadow.com/pakuPaku

The video about RLE Encoding in Commodore Basic in English:
   • C128 Basic 100x faster? - Fast like a Flas...  

The video about RLE Encoding in Commodore Basic in German:
   • REU und GeoRAM in BASIC Programmen nutzen  

PC Retro Tech's YouTube channel:
‪@PCRetroTech‬

Thanks to emulaThor for allowing using his images.
Find his YouTube channel here:
‪@emulaThor‬