Let’s Code x86 Assembly: 0x07 Text Mode Plasma

In this episode of our tour through the 8086 assembly language, we learn a few new opcodes and concepts CBW makes an appearance, as does the powerful XLAT for looking up values in … look-up tables! We use this to make a text mode plasma like effect. It is a bit simpler compared to what we did in another episode on the VGA card, but this time the executable is tiny, coming in at less than 170 bytes. We talk a bit about how to access screen memory in text mode and how to query the real time clock in the PC.

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