92
Chapter 3
CPU Functions
User’s Manual U16580EE3V1UD00
Table 3-3:
Saturated Operation Results
(5)
CALLT execution status saving registers (CTPC, CTPSW)
There are two CALLT execution status saving registers, CTPC and CTPSW.
When the CALLT instruction is executed, the contents of the program counter (PC) are saved to
CTPC, and the program status word (PSW) contents are saved to CTPSW.
The contents saved to CTPC consist of the address of the next instruction after the CALLT
instruction.
Bits 31 to 26 CTPC and bits 31 to 8 of CTPSW are reserved (fixed to 0) for future function
expansion.
Figure 3-7:
CALLT Execution Status Saving Registers (CTPC, CTPSW)
The values of CTPC and CTPSW are restored to PC and PSW during execution of the CTRET
instruction.
Operation result status
Flag status
Saturated
operation result
SAT
OV
S
Maximum positive value exceeded
1
1
0
7FFFFFFFH
Maximum negative value exceeded
1
1
1
80000000H
Positive (maximum value not exceeded)
Holds value
before operation
0
0
Actual
operation result
Negative (maximum value not exceeded)
1
31
26 25
0
After reset
0xxxxxxxH
(x: Undefined)
CTPC
0 0 0 0 0 0
(PC contents)
31
8 7
0
After reset
000000xxH
(x: Undefined)
CTPSW
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
(PSW contents)
Summary of Contents for MuPD70F3187
Page 6: ...6 Preface User s Manual U16580EE3V1UD00 ...
Page 16: ...16 User s Manual U16580EE3V1UD00 ...
Page 28: ...28 User s Manual U16580EE3V1UD00 ...
Page 32: ...32 User s Manual U16580EE3V1UD00 ...
Page 84: ...84 Chapter 2 Pin Functions User s Manual U16580EE3V1UD00 MEMO ...
Page 144: ...144 Chapter 3 CPU Functions User s Manual U16580EE3V1UD00 MEMO ...
Page 312: ...312 Chapter 9 16 Bit Timer Event Counter P User s Manual U16580EE3V1UD00 MEMO ...
Page 534: ...534 Chapter 11 16 bit Timer Event Counter T User s Manual U16580EE3V1UD00 ...
Page 969: ...969 Chapter 20 Port Functions User s Manual U16580EE3V1UD00 MEMO ...
Page 970: ...970 Chapter 20 Port Functions User s Manual U16580EE3V1UD00 ...
Page 976: ...976 Chapter 22 Internal RAM Parity Check Function User s Manual U16580EE3V1UD00 MEMO ...
Page 984: ...984 Chapter 23 On Chip Debug Function OCD User s Manual U16580EE3V1UD00 MEMO ...
Page 1006: ...1006 Chapter 24 Flash Memory User s Manual U16580EE3V1UD00 MEMO ...
Page 1036: ...1036 Chapter 27 Recommended Soldering Conditions User s Manual U16580EE3V1UD00 MEMO ...
Page 1046: ...1046 Appendix A Index User s Manual U16580EE3V1UD00 MEMO ...
Page 1052: ...1052 User s Manual U16580EE3V1UD00 ...
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