CHAPTER 3 CPU FUNCTIONS
54
3.2 CPU Register Set
The CPU registers of the V850/SA1 can be classified into two categories: a general-purpose program register set
and a dedicated system register set. All the registers are 32 bits width. For details, refer to V850 Family User’s
Manual Architecture.
r0
r1
r2
r3
r4
r5
r6
r7
r8
r9
r10
r11
r12
r13
r14
r15
r16
r17
r18
r19
r20
r21
r22
r23
r24
r25
r26
r27
r28
r29
r30
r31
Zero Register
Reserved for Address Register
Interrupt Stack Pointer
Stack Pointer (SP)
Global Pointer (GP)
Text Pointer (TP)
Element Pointer (EP)
Link Pointer (LP)
PC
Program Counter
PSW
Program Status Word
ECR
Exception Cause Register
FEPC
FEPSW
Fatal Error PC
Fatal Error PSW
EIPC
EIPSW
Exception/Interrupt PC
Exception/Interrupt PSW
31
0
31
0
31
0
31
0
31
0
31
0
System register set
Program register set
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