DECOMMISSIONED

KOS™

The original kernel engine in x86_64 Assembly and C — the foundation the early Tech Haven Studios OS ecosystem was built on. No longer actively developed; superseded by the Haven line. The last stable build is still available to download.

Last stable build Documentation

Status

KOS is no longer actively updated. It has been decommissioned in favour of the MorrowOS / HavenDOS line. The last stable build remains available to download and study, but no further releases or patches are planned.

Technical Architecture

KOS was a bare-metal kernel written in x86_64 Assembly and C, following a microkernel-inspired design. Custom buddy-system page allocator, APIC-based interrupt handling, and a modular driver interface.

Historical Features

16/32/64-bit x86 support with UEFI and BIOS boot
4KB/2MB/1GB page sizes with buddy allocator
AHCI/SATA storage drivers with DMA
PS/2 and USB keyboard and mouse input
VGA/VESA framebuffer graphics modes
Serial port debugging interface
PCI device enumeration