CHAPTER 3 CPU FUNCTION
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User’s Manual U15195EJ5V0UD
3.2 CPU Register Set
The registers of the V850E/IA2 can be classified into two categories: a general-purpose program register set and a
dedicated system register set. The width of all the registers is 32 bits.
For details, refer to
V850E1 Architecture User’s Manual
.
(1) Program register set
(2) System register set
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)
(Assembler-reserved register)
(Stack pointer (SP))
(Global pointer (GP))
(Text pointer (TP))
(Element pointer (EP))
(Link pointer (LP))
PC
(Program counter)
PSW
(Program status word)
ECR
(Interrupt source register)
FEPC
FEPSW
(Status saving register during NMI)
(Status saving register during NMI)
EIPC
EIPSW
(Status saving register during interrupt)
(Status saving register during interrupt)
31
0
31
0
31
0
CTBP
(CALLT base pointer)
DBPC
DBPSW
(Status saving register during exception/debug trap)
(Status saving register during exception/debug trap)
CTPC
CTPSW
(Status saving register during CALLT execution)
(Status saving register during CALLT execution)