Run-Time Abstraction Services
From Infogalactic: the planetary knowledge core
Lua error in package.lua at line 80: module 'strict' not found. Run-Time Abstraction Services, or RTAS, is run-time firmware that provides abstraction to the operating systems running on IBM System i and IBM System p computers.
It contrasts with Open Firmware, in that the latter is usually used only during boot, while RTAS is used during run-time.
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