Building on the previous series of Nanocomp videos, this series will add a VGA style video controller on breadboards to learn about how computer and video hardware works. In this video I'll extend the design to use a RAM Character Generator to map ASCII character byte values to the screen raster image. We'll use a VGA font converted into Motorola SREC format so it can be loaded from the PC direct into the Character RAM Memory. Based on the Motorola 6809 CPU and a project published in Wireless World Magazine from July 1981. Click Subscribe to not miss future videos.
Subtitles will be edited and added once the YouTube automatic subtitles have been generated. Some of the audio leveling has not worked properly so I will re-publish once I get to the bottom of why the Resolve Dialogue Leveler is not quite leveling properly.
Fontraption and VGAfonts-20-11-25-with-previews.zip
https://int10h.org/blog/2019/05/fontraption-vga-text-mode-font-editor/https://github.com/viler-int10h/vga-text-mode-fonts/releases/download/2020-11-25/VGAfonts-20-11-25-with-previews.zip
Breadboarding Introduction Video "Prototyping and Experimenting with Breadboards" https://www.youtube.com/watch?v=Y36g0TNkpvk
Nanocomp Introduction Video https://www.youtube.com/watch?v=oNCKHvTz3Cg
Chapters
0:00 Introduction
1:01 Stage 2 block diagram
4:47 VGA screen fonts
6:44 Convert Fonts to SREC format
09:04 Components
11:33 KiCad schematic
16:24 Breadboard layout
19:05 Assembling and wiring breadboards
21:16 Minor change to RAM Chip Enable
21:55 Testing
26:49 Summary and Next Video
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