Minerva (QDOS reimplementation)

Operating system

Minerva
Developer	Laurence Reeves
OS family	Sinclair QDOS
Source model	Open source
Latest release	1.89
Platforms	Sinclair QL
License	GNU General Public License

Minerva is a reimplementation of Sinclair QDOS, the built-in operating system of the Sinclair QL line of personal computers. Written by Laurence Reeves in England, Minerva incorporates many bug fixes and enhancements to both QDOS and the SuperBASIC programming language. Later versions also provide the ability to multi-task several instances of the SuperBASIC interpreter, something not supported by QDOS.

Minerva was distributed as a ROM chip on a daughterboard which replaces the QL's original ROM chips. A Minerva Mk. II daughterboard also incorporates an I²C interface and non-volatile real-time clock. As of version 1.89, the Minerva source code is licensed under the GNU General Public License.

Other reimplementations of QDOS include SMS2 and SMSQ/E.

External links

Operating systems

General

Variants

Kernel

Architectures	Exokernel Hybrid Microkernel Monolithic Multikernel vkernel Rump kernel Unikernel
Components	Device driver Loadable kernel module User space and kernel space

Process management

Concepts	Computer multitasking (Cooperative, Preemptive) Context switch Interrupt IPC Process Process control block Real-time Thread Time-sharing
Scheduling algorithms	Fixed-priority preemptive Multilevel feedback queue Round-robin Shortest job next

Memory management,
resource protection

Storage access,
file systems

Supporting concepts

This operating-system-related article is a stub. You can help Misplaced Pages by expanding it.

Categories: