MAS281 Dynex, MAS281 Datasheet - Page 25

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

* M = memory, P = processor (5 OSC cycles), B = processor (6 OSC cycles),
a = average if more than one alternative exists
** Priveleged instruction
Operation
CONVERT
Convert Floating-Point to 16-Bit
Integer
Convert 16-Bit Integer to Floating-
Point
Convert Extended-Precision
Floating-Point to 32-Bit Integer
Convert 32-Bit Integer to
Extended-Precision Floating-Point
STACK
Stack IC and Jump to Subroutine
Unstack IC and return from
Subroutine
Pop Multiple registers off the
Stack
Push Multiple Registers on to the
Stack
I/O (See l/O Command Summary)
Execute l/O
Vectored l/O
SPECIAL
Built-ln Function Call
Move Multiple Words, Memory-to-
Memory
Exchange Words in Registers
Load Status
No Operation
Break Point
Table 7a: Instruction Summary (continued)
Op Code/Ext
E8
E9
EA
EB
7E
7F
8F
9F
48
49
4F
93
ED
7D
7C
FF
FF
Mnemonic
FIX
FLT
EFIX
EFLT
SJS
URS
POPM
PSHM
XlO**
VlO**
BIF
MOV
XWR
LST**
LSTI**
NOP
BPT
Format
R
R
R
R
D, DX
S
S
S
IM,IMX
D,DX
S
S
R
D, DX
I, IX
S
S
M
1
1
1
1
4
3
2.5+n
(n=O to 15)
1 + n
(n=O to 15)
3
-
1+4n
1
8
9
1
3
Cycles *
P
4.25
3
12.25
7.5
3
1
2.25+n
(n=O to 15)
4.5 + n
(n=O to 15)
3.583
-
1+3n
2
2
2
2
4
MAS281
6.277a
1+2na
B
4.5a
2a
6.25a
3.5a
0
1
4.25a
2a
-
0
3
4
2
4
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