Mode 80 Demo

From Uzebox Wiki
Jump to: navigation, search
Video Mode 80 Demo
Mode80 screenshot2.png
DeveloperJubatian
Code licenseGNU General Public License version 3
or (at your option) any later version.
Media licenseCreative Commons Attribution Share-Alike version 3.0
Video Mode80
Latest releaseDemo
Release dateNovember 17,2019
LanguageEnglish


Video Mode 80 is a high-resolution code-tile mode, designed along with its generators to support a versatile set of code-tile displays.

The primary goal of the mode is providing a decent solution for an at least 80 columns wide textmode display, which it achiever in better quality than Mode 9 does, allowing to fit 80 columns on most displays (contrary to Mode 9 where the most often the edge columns are missing).

For 80 columns wide text, it uses 17 cycle per tile, which compares to other modes and usages of NTSC the following manner:

18 cycles wide: Mode 9, 6 pixels / tile; 1440 clocks for 80 columns. 17 cycles wide: This mode; 1360 clocks for 80 columns. 16 cycles wide: CGA High-Res; 1280 clocks for 80 columns. Technically it would be possible to use 16 cycles, however it was not chosen for the character set included with this mode to avoid character features synchronizing to NTSC colorburst (16 Uzebox cycles: 2 NTSC Color clocks).

ROM

[[Media::M80demo.uze| .UZE File]]

Sources

Sources for the video mode: [1]