MA31750 Datasheet, PDF (20/42 Pages) Dynex Semiconductor – High Performance MIL-STD-1750 Microprocessor

MA31750
OPERATION
Mnem.
Format
Opcode
(Ext)
1750B MODE INSTRUCTIONS
The following instructions may
only be executed in 1750B mode
and are illegal in 1750A
'LONG' LOADS AND STORES
Long Load Single
Long Load Double
Long Load Extended Precision
Floating-Point
Long Store Single
Long Store Double
Long Store Extended Precision
Floating-Point
LSL
LDL
LEFL
LSS
LDS
LEFS
UNSIGNED ARITHMETIC
Unsigned Integer Add
Unsigned Integer Subtract
Unsigned Integer Compare
UAR
UA
USR
US
UCR
UC
UCIM
BYTE LOADS AND STORES
Load Byte
Load Byte With Increment
Store Byte
Store Byte With Increment
LBY
LBYI
SBY
SBYI
BIT OPERATION
Search First Bit Set
SFBS
S
S
S
S
S
S
R
D,DX
R
D,DX
R
D,DX
IM
S
S
S
S
R
CC
CD
CE
DC
DD
DE
AD
AE
BD
BE
FC
FD
4A 0
BF
AF
DF
CF
95
Notes:
a
wa
**
***
Average if more than one alternative exists.
Weighted average where data dependency exists.
Privileged instruction - illegal if PS≠0.
VIO execution time dependent on number and type of transfer.
Memory
cycles
3
4
5
4
6
8
1
3
1
3
1
3
2
2
2
2
2
1
Internal
Cycles
11
20
27
9
16
23
4
4
4
4
5
5
5
3
3
3
3
3.75a
Figure 20b: MIL-STD-1750B Instruction Summary
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