Let's Code MS DOS 0x03: The VGA Card

In this third part of the "Let's Code MS DOS" series we explore the VGA graphics card. I will show you how to enable graphics mode, because the PC and DOS boot up in a text mode, which is backwards compatible to earlier PCs. We touch the subject of software interrupts, the API of the BIOS and DOS, as well as I/O ports to program the VGA card's palette registers. Support me on Patreon: https://www.patreon.com/root42 Support me on Ko-Fi: https://ko-fi.com/root42 Support me on PayPal: https://paypal.me/ArneSchmitz Source code: https://gist.github.com/root42/8e147c5ec2427f42f2ac50a5aba52317/10e6ff399d59710513a1a990bced139c9be48060 PC hardware doc: http://stanislavs.org/helppc/idx_hardware.html DOS and BIOS API: http://stanislavs.org/helppc/idx_interrupt.html Slides: https://drive.google.com/file/d/1qhv6nvoX_mg2HWcYaDgiJJhV3Qv8Rlz4/view?usp=share_link Long Stroll von Kevin MacLeod ist unter der Lizenz "Creative Commons Attribution" (https://creativecommons.org/licenses/by/4.0/) lizenziert. Quelle: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100174 Künstler: http://incompetech.com/