NEC PD17062 - Manual (Page 44)

44
µ
PD17062
Example 2. When BANK0 is selected and MPE = 0 is specified
MOV 04H, #8 ; 04H
←
8
AND RPL, #0001B ; RP
←
0000000B; The general-purpose register is allocated in row
; address 0H in BANK0.
MOV @04H, 52H
Executing the above instruction transfers the contents of data memory address 52H to address 58H. The
MOV @r, m instruction is called an indirect transfer of the general-purpose register contents. In this
instruction, the contents of the general-purpose register address specified in r (8 in the above example) consist
of the column address of data memory, and the row address specified in m (5 in the above example) is the
row address of data memory. That is, the data memory address is 58H (see Fig. 6-3).
See Section 8.5 for an explanation of the indirect transfer of the general-purpose register contents.
Fig. 6-3 Execution of Instructions in Example 2
Example 3.
AND RPL, #0000B ; RP
←
0000000B; The general-purpose register is allocated in row
; address 0H of BANK0.
MOV BANK, #0010B ; BANK2
LD 01H, 31H
LD 02H, 32H
LD 03H, 33H
LD 04H, 34H
OR RPL, #1000B ; RP
←
0000100B; The general-purpose register is allocated in row
; address 4H of BANK0.
LD 05H, 45H
LD 06H, 46H
LD 07H, 47H
LD 08H, 48H
0 1 2 3 4 5 6 7 8 9 A B C D E F
0
2
3
4
5
6
7
1
RP
BANK0
MOV
M
@ 04H, 56H
8
System register
Column address
General-purpose register
Row address