Line Bundling With Dot Or Function; Special Symbols; Alu (Arithmetic Logic Unit) - IBM 5100 Maintenance Information Manual

Line Bundling with Dot OR Function
In some cases one bundle is shown dot ORed with another
bundle such as:
DOT
OR
1---10-7) _ _
IO-7)~
_ _ _ 10-7)
...aI
..... -
........
This representation conveys that a separate dot OR exists
for each corresponding line of the two bundles_ Also note
the method used to identify the lines (0-7) within the
bundle. This indicates 8 bits. beginning with bit 0 and
ending with bit 7.
SPECIAL SYMBOLS
ALU (Arithmetic Logic Unit)
Two inputs are fed into an ALU. one via the A input and
one via the 8 input and some function is performed on the
two inputs. The function such as add. subtract. complement.
shift. and other arithmetic or logical functions is determined
by
the ALU control input. The result is passed to the ALU
output.
AlU Control
logical Symbol legend 5-13