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Operation
Operand
Table 3-25 continued:
1)
S BI
B
RS
60 to 63
1)
The value in the formal operand or system data is interpreted as the operation code of a STEP 5
operation and is then executed.
CPU 948 Programming Guide
C79000-G8576-C848-04
Function
Indirect processing of a formal operand:
execute an operation whose operation code is
stored in a formal operand. The number of the
formal operand must be stored in ACCU 1.
1)
Execute an operation whose operation code
is stored in the system data area (RS = free
system data: RS 60 to 63). In 2-word operations
the 2nd word must be loaded in RS n + 1.
Note
Only the following operations can be combined with DO DW, or
DO FW, DI or DO RS:
-
A.. , AN.. , O.. , ON.. , S.. , R.. , =..
with areas I, Q, F, S,
-
FR T, R T, SF T, SD T, SP T, SS T, SE T,
-
FR C, R C, S C, CD C, CU C,
-
L.., T.. with areas P, O, I, Q, F, S, D, RI, RJ, RS, RT,
-
L T, L C,
-
LC T, LC C,
-
JU=, JC=, JZ=, JN=, JP=, JM=, JO=,
-
SLW, SRW,
-
D, I, SED, SEE,
-
C DB, JU.. , JC.., G DB, GX DX, CX DX, DOC FX, DOU FX.
The PG does not check the legality of the combinations!
Executive Operations
3 - 67
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