UPD17062 datasheet(44/298 Pages) RENESAS

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µPD17062

6.3

ADDRESS GENERATION FOR GENERAL-PURPOSE REGISTER AND DATA MEMORY IN INDIVIDUAL

INSTRUCTIONS

Table 6-1 lists the operation and transfer instructions that can be executed for the data in the general-

purpose register and data memory.

Consider the following instruction:

ADD r, m ((r)

← (r) + (m))

Upon executing this instruction, the address of the general-purpose register is generated from the value

of the general-purpose register pointer and the value specified in r, as shown in Table 6-2. Then, the contents

of the general-purpose register specified by the generated address of the general-purpose register are added

to the contents of the data memory location specified in m, the result being stored into the general-purpose

The address of the general-purpose register is generated, as described above, for each of the instructions

listed in Table 6-1.

Table 6-1

Manipulation Instructions Executed between the General-Purpose Register and Data Memory

Table 6-2

Address Generation for General-Purpose Register and Data Memory

Data memory address

specified in m

Instruction

Address

Generated address

Bank

Row address

Column address

General-purpose register

address specified in r

ADD r, m

(0000B)

(BANK)

(00

× × B)

(RP)

Instruction set

Instruction

Operation

Addition

ADD

r, m

(r)

← (r) + (m)

ADDC

r, m

(r)

← (r) + (m) + CY

Subtraction

SUB

r, m

(r)

← (r) – (m)

SUBC

r, m

(r)

← (r) – (m) – CY

Logical operation

AND

r, m

(r)

← (r) ∧ (m)

r, m

(r)

← (r) ∨ (m)

XOR

r, m

(r)

← (r) ∨− (m)

Transfer

r, m

(r)

← (m)

m, r

(m)

← (r)

MOV

@r, m

if MPE = 1: (MP, (r))

← (m)

if MPE = 0: (BANK, mR, (r))

← (m)

MOV

m, @r

if MPE = 1: (m)

← (MP, (r))

if MPE = 0: (m)

← (BANK, mR, (r))

Shift

RORC

Right shift, including a carry

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