Section 2 CPU
Rev. 6.00 Aug 04, 2006 page 41 of 680
REJ09B0145-0600
2.1.3
Register Configuration
Figure 2.1 shows the register structure of the H8/300L CPU. There are two groups of registers: the
general registers and control registers.
7
0 7
0
15
0
PC
R0H
R1H
R2H
R3H
R4H
R5H
R6H
R7H
R0L
R1L
R2L
R3L
R4L
R5L
R6L
R7L
(SP)
SP: Stack pointer
PC: Program counter
CCR: Condition code register
Carry flag
Overflow flag
Zero flag
Negative flag
Half-carry flag
Interrupt mask bit
User bit
User bit
CCR
I U H U N Z V C
General registers (Rn)
Control registers (CR)
7
5
3 2 1 0
6
4
Figure 2.1 CPU Registers
Содержание H8/38342
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