COMP212S2004MidTermExam1p2 ID             NAME

(2) Consider the following circuit which is the Instruction Decoder unit of 16 bit CAPC processor.

(2a) Design and draw the 16 bit IR, Instruction Register, by making use of devices in the Tool Box of LogicWorks4.

      

      

      

      

      

      

      

(2b) Design and draw the 4x16 Decoder MACH, Machine OP Code Decoder, by making use of devices in the Tool Box of LogicWorks4.

      

      

      

      

      

      

      

(2c) Design and draw a 12 Bit Buffer and 4 Bit Zero units by making use of devices in the Tool Box of LogicWorks4.

      

      

      

      

      

      

      

(2d) What is the content of 12 Bit Buffer (in terms of Assembly Language Instruction) ?