4 ms·
Voodoo mode is the ultimate test. Imagine having access to 4GB of memory from real mode.
by mrlonglong 6mo ago
Voodoo mode is the ultimate test. Imagine having access to 4GB of memory from real mode.
- jmmv 6mo agoShameless plug for my https://blogsystem5.substack.com/p/beyond-the-1-mb-barrier-in-dos https://blogsystem5.substack.com/p/beyond-the-1-mb-barrier-i... article from a couple of years ago. You'll find a deep dive on unreal mode (I just learned it's also known as "vodoo mode") and some hands-on code to play with it ;-P
- bombcar 6mo agoI want vooDOS 5.0 which is 32 bit clean :)
- mrlonglong 6mo agoThere are things like DOS4GW that you can use as loaders.
- vardump 6mo agoMost people called it unreal mode. https://en.wikipedia.org/wiki/Unreal_mode https://en.wikipedia.org/wiki/Unreal_mode
- nand2mario 6mo agoYep. The microcode in real mode segment loading (as shown in the post) does not set the limit to 64KB. That is why returning to real mode with a large value like 4GB in limit gives you "unreal mode".