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116
Rabbit 2000/3000 Microprocessor
Description
Rotates to the left with the C flag the contents of register DE. Each bit in the register moves to the next high-
est-order bit position (bit 0 moves to bit 1, etc.) while the C flag moves to bit 0 and bit 15 moves to the C flag.
See figure below.
Figure 2: Bit logic of the RL instruction.
RL DE
Opcode
Instruction
Clocks
Operation
F3
RL DE
2
{CF,DE} = {DE,CF}
Flags
ALTD
I/O
S
Z
L/V
C
F
R
SP
S
D
•
•
L
•
•
•
15
0
CF
Содержание 2000
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