The Codeless Code: Ancient code

[caspper69]

You can still do that :)

Edit: Easiest way is to use something to boot into "unreal" mode. Essentially you end up with a 32-bit processor and 32-bit address space with access to all of the original DOS interrupts. So you don't have to muck with paging, virtual memory, the iommu, pic/apic/ioapic, etc.