COMPUTER ARCHITECTURE
Spring Semester 2001

COMPUTER ARCHITECTURE - Spring 2001 Programming Assignments

1. PROG #6: MIC-1 SIMULATOR - MICROPROGRAM LEVEL INTERPRETER
   
   Write an object-oriented program in C++ or Java that will properly simulate the
   microprogram and assembly language operation of the hypothetical Mic-1 computer as
   defined in chapter #4 of the Tanenbaum text (3rd Edition).
   (See Xerox copies and online help)
   

   The program will be graded in several phases:
   PROG #6a, PROG #6b, and PROG #6c (final version).

   Check out www.tjhsst.edu/~dhyatt/arch for more information about:
   1. Description of the Mic-1 hardware and control store ("The MIC-1 Computer").
   2. The hexadecimal code for the complete control store ("Microcode for the Mic-1 Control Store")
   
   
2. PART A: Decode a 32-bit control store microinstruction. Read a line from the
   file of control store microinstructions (32-bit instructions) and parse the
   instruction into the 13 fields of Fig. 4-9.
   • Example 1: Line 17 would output:
     AMUX = 1
     COND = 0
     ALU = 3
     SH = 0
     MBR = 0
     MAR = 0
     RD = 0
     WR = 0
     ENC = 1
     C = 10
     A, B, Address don't matter
     
     
   • Example 2: Line 19 (tir = lshift(tir); if n goto 25) would output:
     AMUX = 0
     COND = 1
     ALU = 2
     SH = 2
     MBR = 0
     MAR = 0
     RD = 0
     WR = 0
     ENC = 1
     C = 4
     B = xx
     A = 4
     ADDRESS = 25
     
   
   
3. PART B: Set up the 16 scratch pad registers, Fig. 4-8 in your packet, so that
   a microcode instruction (32-bit) "runs through" the registers. Print out the
   contents of the registers "before" and "after".
   
   
4. PART C: Interpret an entire Mac-1 Assembly language program (a program of
   16-bit macroinstructions) by the Mic-1 control store (32-bits).