CP_IsDivBusy

C Specification

#include <nitro/cp.h>

s32 CP_IsDivBusy( void );

Arguments

None.

Return Values

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

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. The 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 Cycles 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.

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.