System clock

Contents

Introduction

The system clock, as accessed by OS_Word 1 and 2, is no longer a pair of incrementing timers. Because of this the 'timer switch' state (OS_Byte 243) is no longer used and will return a constant value.

The system clock is not related to the interval timer (OS_Word 3,4) or to the monotonic time (OS_ReadMonotonicTime) except that all are triggered at 100Hz.

Document information

Maintainer(s):

Gerph <gerph@gerph.org>

History:

Revision	Date	Author	Changes
1	2006	Gerph	Initial version Released as RISC OS Select documentation.
2	30 Dec 2021	Gerph	PRM-in-XML conversion Created from original Select documentation

http://www.riscos.com/support/developers/riscos6/time/systemclock.html

Disclaimer:

System clock

Contents

Introduction

Document information