Tux Machines
Posted by Roy Schestowitz on Apr 09, 2023
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=> ↺ Writing Helios drivers in the Mercury driver environment
Helios is a microkernel written in the Hare programming language and is part of the larger Ares operating system. You can watch my FOSDEM 2023 talk introducing Helios on PeerTube.
=> ↺ Helios | ↺ Hare | ↺ Ares | ↺ on PeerTube
Let’s take a look at the new Mercury driver development environment for Helios.
As you may remember from my FOSDEM talk, the Ares operating system is built out of several layers which provide progressively higher-level environments for an operating system. At the bottom is the Helios microkernel, and today we’re going to talk about the second layer: the Mercury environment, which is used for writing and running device drivers in userspace. Let’s take a look at a serial driver written against Mercury and introduce some of the primitives used by driver authors in the Mercury environment.
=> ↺ Mercury
=> ↺ Helios | ↺ Hare | ↺ Ares | ↺ on PeerTube | ↺ Mercury
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