NEC PD17062 User Manual
Page 32
32
µ
PD17062
5.1.3 Structure of the General-Purpose Register (GR)
The general-purpose register consists of 12 nibbles, specified with an arbitrary row address, in data
memory.
An arbitrary row address is specified using the general-purpose register pointer in the system register.
Fig. 5-4 shows the structure.
Fig. 5-4 Structure of the General-Purpose Register (GR)
SYSREG
0
1
2
3
4
5
6
7
SYSREG
0
1
2
3
4
5
6
7
Row address
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
Column address
BANK0
BANK1
General-purpose register
The same register is allocated
for each bank.
Area specifiable as general-purpose
register
Pointed to by general-purpose
register pointer (RP) in system
register.
SYSREG
0
1
2
3
4
5
6
7
BANK2