Ii. Instruction Repertoire; Internal Instructions - GE DATANET-30 Programming Reference Manual

II. INSTRUCTION REPERTOIRE
There are over 78 basic instructions with many variations of some of them. These are classified
into three groups:
1. Internal instructions
2. Buffer selector instructions
3. Controller selector instructions.
INTERNAL INSTRUCTIONS
The internal instructions are further classified into eight subgroups:
1. Load
2. Store
3. Arithmetic
4. Logical
5. Register Transfer
6. Branch
7. Macro
8. Special
In the following discussion, an M in the "Operand" column means that the instruction refers
to a memory location. All such instructions use one of the addressing modes; therefore, no
specific mention is made of these modes here.
I or FROM, TO in the operand column means that the information to be used in executing the
instruction is made up of the bits in the low-order part of the instruction itself.
For brevity, the notation I (1-7) will be used for the 7 low-order bits of the instruction word.
B (18) stands for the high-order bit of B. M stands for all 18 bits of the memory location;
B stands for all 18 bits of the B-register; C stands for all 7 bits of the C-register, etc.
rID&1J&~~1JCJ ~®------------
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