Summary of QGEN instruction codes
Instructions take from 0 to 4 operands.
Logical instructions cause the data modification or action specified in the
result field to take place.
Arithmetic and data conversion instructions place their output in the result
field.
Prefixing the letter "C" to any instruction (except LOOP and NOP)
makes it conditional on operand A evaluating true.
Logical instructions:
| Code |
Ops |
Meaning |
| ALL |
None |
Do for all records |
| AND |
1-4 |
A [and B [and C [and D]]] must be true |
| IF |
1-4 |
Identical to AND |
| OR |
1-4 |
A [or B [or C [or D]]] must be true |
| EOR |
2-4 |
One and only one of A or B [or C [or D]] must be true |
Arithmetic instructions:
| Code |
Ops |
Meaning |
| ADD |
1-4 |
add A[+B[+C[+D]]] and place sum in result field |
| DIV |
2 |
divide A by B |
| MPY |
2-4 |
multiply A*B[*C[*D]] |
| MPD |
3 |
multiply A*B and divide by C |
| SUB |
2 |
subtract B from A |
| SQ |
1 |
square root of A |
Comparison instructions (logical):
| Code |
Ops |
Meaning (F=field compare/N=numeric compare) |
| FEQ/NEQ |
2-4 |
A equal to B [and C [and D]] |
| FNE/NNE |
2-4 |
A not equal to B [and C [and D]] |
| FHE/NHE |
2-4 |
A higher than or equal to B [and C [and D]] |
| FHI/NHI |
2-4 |
A higher than B [and C [and D]] |
| FLE/NLE |
2-4 |
A lower than or equal to B [and C [and D]] |
| FLE/NLO |
2-4 |
A lower than B [and C [and D]] |
| FRN/NRN |
3 |
A is in range [B to C] inclusive |
| FNR/NNR |
3 |
A is not in range [B to C] inclusive |
Punch instructions (for column binary data only):
| Code |
Ops |
Meaning |
| MP |
1-4 |
test for more than one punch present |
| NEN |
2-4 |
Bit-wise AND of A and B [and C [and D]]] |
| NET |
2-4 |
Bit-wise OR of A and B [and C [and D]]] |
| NEX |
2 |
Bit-wise Exclusive OR of A and B |
| SHI |
1 |
save only highest punch |
| SLO |
1 |
save only lowest punch |
| SPB |
1-4 |
test for single punch or blank |
| TAL |
1-4 |
tally (count) the number of punches |
Data conversion instructions:
| Code |
Ops |
Meaning |
| ATB |
1 |
translate characters to column-binary |
| BTA |
1 |
translate column-binary to characters |
| DEC |
1-4 |
decode column-binary into a character string of 1's and 0's |
| ED |
1 |
edit a field with a mask |
| ATE |
1 |
translate ASCII to EBCDIC |
| ETA |
1 |
translate EBCDIC to ASCII |
| STR |
1-4 |
string out the character values of the punches |
Other instructions:
| Code |
Ops |
Meaning |
| LOOP |
1-4 |
repeat instruction, with increments |
| MOV |
1 |
copy data to another location |
| NOP |
None |
dummy instruction (use as place marker) |
| TLU |
2 |
Table lookup |
| TLN |
2 |
Table lookup (numeric) |
| TLR |
2 |
Table lookup (numeric range) |
