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root42<\/a><\/h3>

Let’s Code MS DOS 0x2B: Memory and Pointers<\/a><\/h4>

Here is a little refresher on how memory management and pointers work in the C programming language, and especially under real mode MS DOS programs…<\/p>

Let’s Code MS DOS 0x2A: Background Adlib Music<\/a><\/h4>

We already learned how to program the Adlib sound card to produce percussion and melodic instruments. Now we tackle the problem of getting real music…<\/p>

Let’s Code MS DOS 0x29: Extended Memory XMS<\/a><\/h4>

In the previous episode we learned how to use Expanded Memory even down to the original IBM PC. From the IBM AT and other 286…<\/p>

Commodore PET: 40K RAM with SoftROM<\/a><\/h4>

The Commodore PET was one of the first true PCs. The entry model PET 2001 in 1977 came with 8K of RAM. My own PET…<\/p>

Black Amiga 500<\/a><\/h4>

Many a computer from the 1980s is today yellowed and brittle. The plastics age considerably over the decades. You can do some mitigation by retrobrighting…<\/p>