Hardware Developers Kit: Architecture Overview
This Hardware Developers Kit (HDK) web page provides an overview of the architecture of SCO platforms.
OpenServer 6 and UnixWare 7 share the same kernel and
The native device driver interface for OpenServer 5 differs from OpenServer 6/UnixWare 7,
although there are many similarities, especially for
MDI device drivers.
Check the "Version applicability" field on each manual page
for information about which operating system releases and device
driver interface versions support that particular entity.
To develop a single device driver that runs on UnixWare 7, OpenServer 6 and
OpenServer 5 as well as other platforms, use