Rev. 1.00, 05/04, page 21 of 544
2.4 Register
Configuration
The H8S/2000 CPU has the internal registers shown in figure 2.6. There are two types of registers:
general registers and control registers. Control registers are a 24-bit program counter (PC), an 8-bit
extended control register (EXR), and an 8-bit condition code register (CCR).
T
I2 I1 I0
EXR
*
7 6 5 4 3 2 1 0
PC
23
0
15
0 7
0 7
0
E0
E1
E2
E3
E4
E5
E6
E7
R0H
R1H
R2H
R3H
R4H
R5H
R6H
R7H
R0L
R1L
R2L
R3L
R4L
R5L
R6L
R7L
SP:
PC:
EXR:
T:
I2 to I0:
CCR:
I:
UI:
Stack pointer
Program counter
Extended control register
Trace bit
Interrupt mask bits
Condition-code register
Interrupt mask bit
User bit or interrupt mask bit
Half-carry flag
User bit
Negative flag
Zero flag
Overflow flag
Carry flag
ER0
ER1
ER2
ER3
ER4
ER5
ER6
ER7 (SP)
I UI H U N Z V C
CCR
7 6 5 4 3 2 1 0
H:
U:
N:
Z:
V:
C:
General Registers (Rn) and Extended Registers (En)
Control Registers
[Legend]
- - - -
Note:
*
Does not affect operation in this LSI.
Figure 2.6 CPU Internal Registers
Содержание H8S/2111B
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