GMS30C2116 Datasheet, PDF (70/322 Pages) Hynix Semiconductor – USERS MANUAL

3-6
CHAPTER 3
Address Mode Encoding:
The encoding of the displacement and absolute address mode types of memory instructions
is shown in table 3.1:
D-code dis(1) dis(0)
0
X
X
1
X
X
2
X
0
2
X
1
3
0
0
3
0
1
3
1
0
3
1
1
LDxx.D/A/IOD/IOA
Rd does not Rd denotes SR
denote SR
LDBS.D
LDBS.A
LDBU.D
LDHU.D
LDBU.A
LDHU.A
LDHS.D
LDHS.A
LDW.D
LDD.D
LDW.A
LDD.A
LDW.IOD
LDW.IOA
LDD.IOD
LDD.IOA
STxx.D/A/IOD/IOA
Rd does not Rd denotes SR
denote SR
STBS.D
STBS.A
STBU.D
STHU.D
STBU.A
STHU.A
STHS.D
STHS.A
STW.D
STD.D
STW.A
STD.A
STW.IOD
STW.IOA
STD.IOD
STD.IOA
Table 3.1: Encoding of Displacement and Absolute Address Mode
The encoding of the next and stack address mode types of memory instructions is shown in
table 3.2:
With the instructions below, Rd must not denote the PC or the SR
D-code dis(1) dis(0)
LDxx.N/S
STxx.N/S
0
X
X
1
X
X
LDBS.N
LDBU.N
STBS.N
STBU.N
2
X
0
LDHU.N
STHU.N
2
X
1
3
0
0
LDHS.N
LDW.N
STHS.N
STW.N
3
0
1
LDD.N
STD.N
3
1
0
3
1
1
Reserved
LDW.S
Reserved
STW.S
Table 3.2: Encoding of Next and Stack Address Mode