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R0 | 1 (Reason code) |
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R0 | Minimum supported CPU speed, in MHz |
R1 | Maximum supported CPU speed, in MHz |
The purpose of this call is to return the minimum and maximum CPU speeds that the system supports.
To find out more information about the available CPU speeds, see Portable_Speed2 4 and Portable_Speed2 5. To find the current CPU speed, see Portable_Speed2 0.
To set the CPU speed, see Portable_Speed2 2 or Portable_Speed2 8 (to set the desired ‘slow’ and ‘fast’ speeds), and Portable_Speed (to switch between the configured ‘slow’ and ‘fast’ speeds).