Datasheet

V850ES/JG3 CHAPTER 3 CPU FUNCTION
R01UH0015EJ0300 Rev.3.00 Page 32 of 870
Sep 30, 2010
(2/2)
Note The result of the operation that has performed saturation processing is determined by the contents of the
OV and S flags. The SAT flag is set to 1 only when the OV flag is set to 1 when a saturation operation is
performed.
Flag Status Status of Operation Result
SAT OV S
Result of Operation of
Saturation Processing
Maximum positive value is exceeded 1 1 0 7FFFFFFFH
Maximum negative value is exceeded 1 1 1 80000000H
Positive (maximum value is not exceeded) 0
Negative (maximum value is not exceeded)
Holds value
before operation
0
1
Operation result itself
(5) CALLT execution status saving registers (CTPC and CTPSW)
CTPC and CTPSW are CALLT execution status saving registers.
When the CALLT instruction is executed, the contents of the program counter (PC) are saved to CTPC, and those
of the program status word (PSW) are saved to CTPSW.
The contents saved to CTPC are the address of the instruction next to CALLT.
The current contents of the PSW are saved to CTPSW.
Bits 31 to 26 of CTPC and bits 31 to 8 of CTPSW are reserved for future function expansion (fixed to 0).
31 0
CTPC
(Saved PC contents) 00
Default value
0xxxxxxxH
(x: Undefined)
26 25
0 0 0 0
31 0
CTPSW
(Saved PSW
contents)
00
Default value
000000xxH
(x: Undefined)
87
0 0 0 0 00 0 0 0 0 00 0 0 0 0 00 0 0 0 0