MB89160/160A Series
(Continued)
Symbol
Meaning
EP
PC
SP
PS
dr
Extra pointer EP (16 bits)
Program counter PC (16 bits)
Stack pointer SP (16 bits)
Program status PS (16 bits)
Accumulator A or index register IX (16 bits)
Condition code register CCR (8 bits)
Register bank pointer RP (5 bits)
CCR
RP
Ri
General-purpose register Ri (8 bits, i = 0 to 7)
Indicates that the very × is the immediate data.
(Whether its length is 8 or 16 bits is determined by the instruction in use.)
×
Indicates that the contents of × is the target of accessing.
(Whether its length is 8 or 16 bits is determined by the instruction in use.)
( × )
(( × ))
The address indicated by the contents of × is the target of accessing.
(Whether its length is 8 or 16 bits is determined by the instruction in use.)
Columns indicate the following:
Mnemonic:
~:
Assembler notation of an instruction
Number of instructions
Number of bytes
#:
Operation:
TL, TH, AH:
Operation of an instruction
A content change when each of the TL, TH, and AH instructions is executed. Symbols in
the column indicate the following:
• “–” indicates no change.
• dH is the 8 upper bits of operation description data.
• AL and AH must become the contents of AL and AH immediately before the instruction
is executed.
• 00 becomes 00.
N, Z, V, C:
OP code:
An instruction of which the corresponding flag will change. If + is written in this column,
the relevant instruction will change its corresponding flag.
Code of an instruction. If an instruction is more than one code, it is written according to
the following rule:
Example: 48 to 4F ← This indicates 48, 49, ... 4F.
48
FUJITSU [ FUJITSU ]
