Renesas M32R-FPU User Manual

3

3-23

M32R-FPU Software Manual (Rev.1.01)

branch instruction

 

 BNC  pcdisp8

 

 BNC  pcdisp24

Branch

(1)  if (C==0)  PC = ( PC & 0xfffffffc ) + ( ( ( signed char ) pcdisp8 ) << 2 );

(2)  if (C==0)  PC = ( PC & 0xfffffffc ) + ( sign_extend ( pcdisp24 ) << 2 );

where

#define  sign_extend(x) ( ( ( signed ) ( (x)<< 8 ) ) >>8 )

BNC branches to the specified label when the condition bit (C) is 0.

There are two instruction formats; this allows software, such as an assembler, to decide on the

better format.

The condition bit (C) is unchanged.

None

INSTRUCTIONS

3.2 Instruction description