Portable_Speed2 5 (changes)

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Programmer's Portable Reference Manuals

» Part 15 – SWI Calls

» Portable Portable_Speed2

» Portable_Speed2 5Portable_Speed2

Portable_Speed2 5

(SWI &42FCE)

Use

The purpose of this call is to convert a speed index to a MHz clock rate.

Notes

Due to hardware restrictions or for performance reasons, most systems will only support a limited number of CPU clock rates. This call, along with Portable_Speed2 4 and Portable_Speed2 6 allow the user to enumerate the list of available clock rates. Index 0 is always the slowest available speed, and (return value of Portable_Speed2 4)-1 is always the highest available speed.

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).

See also

• Portable SWI Calls
• Portable_Speed
• Portable_Speed2
• Portable_Speed2 2
• Portable_Speed2 4
• Portable_Speed2 6
• Portable_Speed2 8