MAS281 Dynex, MAS281 Datasheet - Page 22

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

MAS281
* M = memory, P = processor (5 OSC cycles), B = processor (6 OSC cycles),
a = average if more than one alternative exists
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Operation
Double-Precision Integer
Add
Single Precision Integer
Subtract
Decrement Memory by a
Positive Integer
Single Precision Negate
Register
Double-Precision Negate
Register
Double-Precision Integer
Subtract
Single Precision Integer
Multiply with 16-Bit Product
Single Precision Integer
Multiply with 32-Bit Product
Double-Precision Integer
Multiply
Single Precision Integer
Divide with 16-Bit Dividend
Single Precision Integer
Dividewith 32-Bit Dividend
Double-Precision Integer
Divide
Table 7a: Insttruction Summary (continued)
Op Code/Ext
A7
A6
B1
1 X
4X 5
B2
B0
4A 2
B3
B4
B5
B7
B6
C1
C2
C3
C0
4A 4
C5
1X
4X 6
C4
4A 3
C7
C6
D1
D2
D3
D0
4A 6
D5
1X
4X 7
D4
4A 5
D7
D6
Mnemonic
DAR
DA
SR
SBB
SBBX
SISP
S
SIM
DECM
NEG
DNEG
DSR
DS
MSR
MISP
MISN
MS
MSIM
MR
MB
MBX
M
MIM
DMR
DM
DVR
DISP
DISN
DV
DVIM
DR
DB
DBX
D
DIM
DDR
DD
Format
R
D, DX
R
B
BX
ISP
D, DX
IM
D,DX
R
R
R
D,DX
R
ISP
ISN
D,DX
IM
R
B
BX
D, DX
IM
R
D,DX
R
ISP
ISN
D,DX
IM
R
R
BX
D,DX
IM
R
D,DX
1
3
2
2
2
M
1
4
1
2
2
1
3
2
4
1
1
1
4
1
1
3
2
1
2
2
3
2
1
4
1
1
1
1
2
3
1
4
Cycles *
3
1
1
2
2
1
1
1
1
1
3
3
1
6.5
7.5
7.5
6 5
6.5
5
7
7
5
5
41
40
20.25 5.5a
20
20.5
20.25 5.5a
20.25 5.5a
21.75 6.5a
22.75 6.5a
22.75 6.5a
21.75 6.5a
22.75 6.5a
79.5
77.5
P
0
0
0
0
0
0
0
0
0
0
0
0
0
4a
4a
4a
4a
4a
3
3
3
3
3
4.5a
4.5a
5.5a
5.5a
5.5a
5.5a
B