Re:Writing a simple operating system from scratch (2010) [pdf]
by afr0ck on Friday March 25, 2022 @12:29PM
(#30804139)
If you are running your OS on a VM hypervisor (e.g.; Qemu, kvmtool), then you can just use virtio for disk and network I/O. No boring and complex device specification (e.g.; ATA) to implement.
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Re:Writing a simple operating system from scratch (2010) [pdf]
by rmasters on Friday March 25, 2022 @01:09PM
(#30804694)
Yeah, I'm avoiding modern interfaces due to my peculiar bootstrapping requirements (e.g. must run on old HW; no SW dependencies). virtio is probably a better choice for anyone trying to build something practical. On the other hand, it looks like using virtio would need a lot more code than accessing the BIOS and I couldn't easily find examples in assembly.