• 8832 registered ALU
• 8818 microsequencer
• WCS data field
As indicated in Figure 16.17, the 32 bits of the WCS data field are fed into the DA
bus to be provided as data to the ALU, floating-point processor, or microsequencer.
The other 96 bits (fields 1–27) of the microinstruction are control signals that are fed
directly to the appropriate module. For simplicity, these other connections are not
shown in Figure 16.17.
The first six fields deal with operations that pertain to the control of the
board, rather than controlling an individual component. Control operations include
the following: