r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 98

• Manufacturer Part Number: r4f2456
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 2 CPU
Table 2.10 Block Data Transfer Instructions
2.6.2
The H8S/2600 Series instructions consist of 2-byte (1-word) units. An instruction consists of an
operation field (op), a register field (r), an effective address extension (EA), and a condition field
(cc).
Figure 2.11 shows examples of instruction formats.
•
• Register Field
• Effective Address Extension
• Condition Field
Rev. 1.00 Sep. 19, 2008 Page 68 of 1342
REJ09B0467-0100
Instruction
EEPMOV.B
EEPMOV.W
Indicates the function of the instruction, the addressing mode, and the operation to be carried
out on the operand. The operation field always includes the first four bits of the instruction.
Some instructions have two operation fields.
Specifies a general register. Address registers are specified by 3 bits, data registers by 3 bits or
4 bits. Some instructions have two register fields. Some have no register field.
8, 16, or 32 bits specifying immediate data, an absolute address, or a displacement.
Specifies the branching condition of Bcc instructions.
Operation Field
Basic Instruction Formats
Size
—
—
Function
if R4L ≠ 0 then
else next;
if R4 ≠ 0 then
else next;
Transfers a data block. Starting from the address set in ER5, transfers
data for the number of bytes set in R4L or R4 to the address location set
in ER6.
Execution of the next instruction begins as soon as the transfer is
completed.
Repeat @ER5+ → @ER6+
Until R4L = 0
Repeat @ER5+ → @ER6+
Until R4 = 0
R4L–1 → R4L
R4–1 → R4