MB89160/160A Series
■ INSTRUCTIONS
Execution instructions can be divided into the following four groups:
• Transfer
• Arithmetic operation
• Branch
• Others
Table 1 lists symbols used for notation for instructions.
Table 1 Instruction Symbols
Symbol
dir
Meaning
Direct address (8 bits)
off
Offset (8 bits)
ext
Extended address (16 bits)
Vector table number (3 bits)
Immediate data (8 bits)
Immediate data (16 bits)
Bit direct address (8:3 bits)
Branch relative address (8 bits)
#vct
#d8
#d16
dir: b
rel
@
Register indirect (Example: @A, @IX, @EP)
A
Accumulator A (Whether its length is 8 or 16 bits is determined by the instruction in use.)
Upper 8 bits of accumulator A (8 bits)
AH
AL
Lower 8 bits of accumulator A (8 bits)
Temporary accumulator T (Whether its length is 8 or 16 bits is determined by the
instruction in use.)
T
TH
TL
IX
Upper 8 bits of temporary accumulator T (8 bits)
Lower 8 bits of temporary accumulator T (8 bits)
Index register IX (16 bits)
(Continued)
47
FUJITSU [ FUJITSU ]
