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RISC OS on QEMU

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Jul 30, 2022 1:27am
Avatar Michael Grunditz (8594) 138 posts

I guess that most or all ports has fixed cpu frequency. There are ways to have a counting timer that more or less works like soc timer..

CNTFRQ_EL0 reports the frequency of the system count.

The timer is set at el3 and what runs there are port specific. Anyway since it can be read , it is a simple divider, just like we do with soc timer.

Not home right now but will definitely try it on the port I currently works with.

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RISC OS is an Open Source operating system owned by RISC OS Developments Ltd and licensed primarily under the Apache 2.0 license.

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Technical discussions for people porting RISC OS to new hardware.

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