參數(shù)資料
型號: MAS281
廠商: Dynex Semiconductor Ltd.
英文描述: MIL-STD-1750A Microprocessor
中文描述: 符合MIL - STD - 1750A微處理器
文件頁數(shù): 26/55頁
文件大?。?/td> 551K
代理商: MAS281
MAS281
26/55
Operation
Op Code/Ext
Mnemonic
Format
Cycles *
FLOATING-POINT
Extended-Precision Floating-
Point Load
8A
EFL
D, DX
5
0
1
Extended-Precision Floating-
Point Store
9A
EFST
D, DX
5
0
1
Floating-Point Absolute Value
of Register
AC
FABS
R
1
1.75
3.25a
Floating-Point Negate Register
BC
FNEG
R
1
3.25
3.75a
Floating-Point Compare
F9
3X
4X D
F8
FCR
FCB
FCBX
FC
R
B
BX
D, DX
1
2
2
3
2.75
2.75
2.75
1.75
2.875wa
2.875wa
2.875wa
2.875wa
Extended-Precision Floating-
Point Compare
FB
FA
EFCR
EFC
R
D,DX
1
4.25a 2.75
3.25
2.875wa
2.875wa
Floating-Point Add
A9
2X
4X 8
A8
FAR
FAB
FABX
FA
R
B
BX
D, DX
1
3
3
4
7.625
6.625
6.625
5.625
8.25wa
8.25wa
8.25wa
8.25wa
Extended-Precision Floating-
Point Add
AB
AA
EFAR
EFA
R
D, DX
1
5
21.3125
19.3125
10.5625wa
10.5625wa
Floating-Point Subtract
B9
2X
4X 9
B8
FSR
FSB
FSBX
FS
R
B
BX
D, DX
1
3
3
4
8.625
7.625
7.625
6.625
8.625wa
8.625wa
8.625wa
8.625wa
Extended-Precision Floating-
Point Subtract
BB
BA
EFSR
EFS
R
D, DX
1
5
23.0625
21.0625
11.8125wa
11.8125wa
Floating-Point Multiply
C9
2X
4X A
C8
FMR
FMB
FMBX
FM
R
B
BX
D, DX
1
3
3
4
12.75a
12.75a
12.75a
11.75a
6.25wa
6.25wa
6.25wa
6.25wa
Extended-Precision Floating-
point Multiply
CB
CA
EFMR
EFM
R
D, DX
1
5
59.75
57.75
6.25wa
6.25wa
Floating-Point Divide
D9
2X
4X B
D8
FDR
FDB
FDBX
FD
R
B
BX
D, DX
1
3
3
4
31.5
30 5
30 5
29.5
32.75wa
32.75wa
32.75wa
32.75wa
Extended-Precision Floating-
Point Divide
DB
DA
EFDR
EFD
R
D, DX
1
5
102.625
100.625
47.875wa
47 875wa
*
M = memory, P = processor (5 OSC cycles), B = processor (6 OSC cycles),
a = average if more than one alternative exists
wa = weighted average favouring one or more possible alternatives
M
P
B
Table 7a: Instruction Summary (continued)
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