Question

UUTUULUUL 001 2. Realize the following SM Chart using a two-address microprogram: a) Convert the SM chart to proper form by adding a minimum number of states. b) Write the microprogram required to implement the circuit. SO GO S1/BK Mi M2 S3/RD S4/YW

Answer 1

erity Code in input and outate verity Code implented with SM chart module sm-chart (input Go input Mi, input me, input clk, rstni output Bk, output RD, output yw, output LD, output GR): wirreny LD, GR; meg (2:0) Cur-state, nut_state; always @ (posedge clk of negedge ost_n) (!rsta) cur_state 2= 36ooo, begin else cur-state ( nxt.state; always @ (*) begin nxt state = Cur-state; Case (cur_state) O: 4 (GO) nxt-state = $1; else not state = 60; 1 if (MI) 11 state 1 1 stay in state o 11 go to state 3 nxt-state = 83; else (M2) next state = 3: 11 go to state 3 nxt.state = 2; 11 go to state 2 23: nxt state = 4; 4: nxt.state = 0; 11 No Condition Cont... end

11 following outputs only dependent on state assign Bk = (cur-state == 36001) lasserts in state 1 assign RD = (Cur-state == 36011) / asserts in state 3 assign yw = (cur-state 2-36100) 11 asserts in State 4 I following outputs depends on both current state & input assigen LD-((current_state == 2'000) 44 GO); assign GR = ((cur-state == 36001) && ! MA && !M2); end module ll above is the design M following is the test bench for module tb.sm chart (); above code meg GO, MI,M), cuk, ustan wire BK, RD, YW, LD, GR; Il but instance sm-Chart u-dut (GO, M1, M2, Clk, est-n, BK, RD, YWI, LD, GR); initial generation begin ilk = 0; forever 1 ck cuk; and initial begin Il apply the reset initially and release the #2 rstan=lbo, 11 apply reset #5 aston = rbr ; 11 releasing the reset end

inputs once the reset is released apply the mittal begin GO =0 COMICO; M2 = #10 11 delaying by lounits . Go = 1 MI=1; 1 starts the state machine M2 = 1; #22 Eldelaying by 12 units, GORA', MI; M2=0; "I look into wave forms for outputs end endmodule

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