50
Table 2.10
Block Transfer Instruction
Instruction
Size
Function
EEPMOV.B
—
if R4L
≠
0 then
repeat
@ER5+
→
@ER6+, R4L – 1
→
R4L
until R4L = 0
else next;
EEPMOV.W
—
if R4
≠
0 then
repeat
@ER5+
→
@ER6+, R4 – 1
→
R4
until R4 = 0
else next;
Block transfer instruction. This instruction transfers the number of data bytes
specified by R4L or R4, starting from the address indicated by ER5, to the
location starting at the address indicated by ER6. At the end of the transfer,
the next instruction is executed.
2.6.4
Basic Instruction Formats
The H8/300H instructions consist of 2-byte (word) units. An instruction consists of an operation
field (OP field), a register field (r field), an effective address extension (EA field), and a condition
field (cc).
Operation Field: 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 4 bits of the
instruction. Some instructions have two operation fields.
Register Field: 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.
Effective Address Extension: 8, 16, or 32 bits specifying immediate data, an absolute address, or
a displacement. A 24-bit address or displacement is treated as 32-bit data in which the first 8 bits
are 0 (H'00).
Condition Field: Specifies the branching condition of Bcc instructions.
Figure 2.9 shows examples of instruction formats.
Содержание H8/3060
Страница 10: ......
Страница 16: ......
Страница 114: ...66 ...
Страница 132: ...84 ...
Страница 144: ...96 ...
Страница 170: ...122 ...
Страница 212: ...164 ...
Страница 268: ...220 ...
Страница 332: ...284 ...
Страница 396: ...348 ...
Страница 494: ...446 ...
Страница 698: ...650 ...
Страница 729: ...681 H8 3062F ZTAT or H8 3062F ZTAT R mask version Ports 1 2 5 LED 600 Ω Figure 22 5 Sample LED Circuit ...
Страница 748: ...700 H8 3064F ZTAT B mask version Ports 1 2 5 LED 600 Ω Figure 22 8 Sample LED Circuit ...
Страница 777: ...729 H8 3062F ZTAT B mask version Ports 1 2 5 LED 600 Ω Figure 22 14 Sample LED Circuit ...
Страница 810: ...762 ...
Страница 994: ...946 ...