CP_IsDivBusy


C Specification

	#include <nitro/cp.h>

	s32 CP_IsDivBusy( void )

Description

Determines whether the divider is busy or not. After writing to a divider register, it will be in busy status for a fixed cycle period. To get the result of division, you need to read when it is no longer busy.

Calculation cycle is as follows (The calculation cycle is a cycle number based on 33.514 MHz. The CPU cycle conversion is a cycle number based on 67.028 MHz.):

Division Mode

Calculation

Calculation Cycle

CPU Cycle Conversion

CP_DIV_32_32BIT_MODE

32-bit divided by 32-bit

18 cycles

36 cycles

CP_DIV_64_32BIT_MODE

64-bit divided by 32-bit

34 cycles

68 cycles

CP_DIV_64_64BIT_MODE

64-bit divided by 64-bit

34 cycles

68 cycles

Internal Operation

Reference DIVCNT(0x4000280) of the IO register.

Arguments

None

Return Values

Whether the divider is busy or not. 0 means ready status and non-0 means busy status.

See Also

CP_SetDivImm*, CP_SetDiv*, CP_WaitDiv, CP_GetDivResult*, CP_GetDivRemainder*

Revision History

11/02/2004 Changed the function type of C Specification from u32 to s32.
06/16/2004 Added description of cycle number.
01/09/2004 Added content.
12/01/2003 Initial version.