MAS281 Dynex, MAS281 Datasheet - Page 21

• Manufacturer Part Number: MAS281
• Description: MIL-STD-1750A Microprocessor
• Manufacturer: Dynex

4.4 INSTRUCTION SUMMARY
* M = memory, P = processor (5 OSC cycles) B = processor (6 OSC cycles),
a = average if more than one alternative exists
Single Precision Load
Double-Precision Load
Single-Precision Store
Store a Non-Negative
Constant
Double-Precision Store
Load Multiple Registers
Store Multiple Registers
INTEGER ARITHMETIC
Single-Precision Integer Add
Increment Memory by a
Positive Integer
Single-Precision Absolute
Value of Register
Double-Precision Absolute
Value of Register
LOAD/STORE
Operation
Op Code/Ext
81
0X
4X 0
82
83
80
85
84
87
0X
4X 1
86
88
0X
4X 2
90
94
91
92
0X
4X 3
96
98
89
99
A1
1 X
4X 4
A2
A0
4A 1
A3
A4
A5
Table 7a: Instruction Summary
Mnemonic
LR
LB
LBX
LISP
LISN
L
LIM
Ll
DLR
DLB
DLBX
DL
DLI
STB
STBX
ST
STI
STC
STCI
DSTB
DSTX
DST
DSTI
LM
STM
AR
AB
ABX
AISP
A
AIM
INCM
ABS
DABS
BX
BX
Format
R
B
ISP
ISN
D, DX
IM,IMX
I,IX
R
B
BX
D, DX
I,IX
B
BX
D, DX
I, IX
D,DX
I, IX
B
BX
D DX
I, IX
D,DX
D,DX
R
B
ISP
D, DX
IM
D,DX
R
R
M
1
2
2
1
1
3
2
4
1
3
3
4
5
2
2
3
4
3
4
3
3
4
5
3+n
3+n
1
2
2
1
3
2
4
1
1
Cycles *
MAS281
P
0
1
1
0
0
0
0
1
2
1
2
0
1
2
2
1
1
1
1
2
2
0
1
1
1
1
2
2
1
1
1
1
1.5
2.5
21/55
B
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
1a
1a