MOVFPE (MOVe data From Peripheral with E clock)
MOVFPE
<Description>
This instruction moves one byte of data from an absolute address location to a destination
register, and sets the condition code flags according to the data value. The transfer is
performed in synchronization with the E (enable) clock used by peripheral devices. The
transfer requires 9 to 16 states, so the execution time is variable. For further information on
basic timing, See the each
Hardware Manuals .
This instruction should not be used with chips not having an E clock output pin or in single-
chip mode.
When the source operand is located in on-chip memory or the on-chip register field, the
MOVFPE instruction is identical in operation to MOV.B @aa:16, Rd.
Note that only 16-bit absolute addressing can be used, and word data cannot be transferred.
<Instruction Formats>
Absolute address
MOVFPE @aa:16, Rd
6
A
4
rd
abs.
13-20
Addressing
mode
Mnem.
Operands
1st byte
Instruction code
No. of
states
2nd byte
3rd byte
4th byte
<Operation>
synchronization with the E clock
(EAs)
→
Rd
<Assembly-Language Format>
MOVFPE
@aa:16, Rd
<Examples>
MOVFPE @H'FF81, R0H
<Operand Size>
Byte
<Condition Code>
I: Previous value remains unchanged.
H: Previous value remains unchanged.
N: Set to "1" if the data value is negative;
otherwise cleared to "0."
Z: Set to "1" if the data value is zero;
otherwise cleared to "0."
V: Cleared to "0."
C: Previous value remains unchanged
I
H
N
Z
V
C
—
—
—
—
↕
↕
0
—
88
Содержание H8/300 Series
Страница 2: ...H8 300 Programming Manual...