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Copy pathA+_UOS_in_ECE
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A+_UOS_in_ECE
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`timescale 1ns / 1ps
module LCD_hard(CLK, RESET, BUTTON, LCD_E, LCD_RS, LCD_RW, LCD_DATA, BUS);
//NUMBER1, NUMBER2, NUMBER3, NUMBER4, OP, ANS1, ANS2, ANS3, ANS4, ANS5,check);
//디버그용
reg [7:0] NUMBER1, NUMBER2, NUMBER3, NUMBER4, OP, ANS1, ANS2, ANS3, ANS4, ANS5;
reg [5:0] check;
reg [3:0] save1, save2, save3, save4;
input CLK, RESET;
input [15:0] BUTTON;
input [4:0] BUS; //계산기 실행
output LCD_E, LCD_RS, LCD_RW;
output [7:0] LCD_DATA;
reg [2:0] STATE;
reg LCD_RS, LCD_RW;
reg [7:0] LCD_DATA;
//CAL
reg [127:0] CAL_TEXT;
reg [7:0] facto1, facto2;
//2018440087
//button
reg BUTTON0,BUTTON1,BUTTON2,BUTTON3,BUTTON4,BUTTON5,BUTTON6,BUTTON7,BUTTON8, BUTTON9,
BUTTON10,BUTTON11, BUTTON12, BUTTON13, BUTTON14, BUTTON15, BUS0,BUS1,BUS2,BUS3,BUS4;
wire BUTTONe_0, BUTTONe_1,BUTTONe_2,BUTTONe_3, BUTTONe_4, BUTTONe_5, BUTTONe_6, BUTTONe_7, BUTTONe_8, BUTTONe_9,
BUTTONe_10, BUTTONe_11, BUTTONe_12, BUTTONe_13, BUTTONe_14, BUTTONe_15, BUS0_e,BUS1_e,BUS2_e,BUS3_e,BUS4_e;
integer NUM1, NUM2, NUM_temp, i, n, NUM_temp1, Memory1, Memory2, //Memory는 결과값을 저장하거나 출력할 때 쓴다.
temp1,temp2 , temp3; //temp는 제곱 구할때 사용
integer save_op;
integer CNT;
parameter DELAY = 3'b000,
FUNCTION_SET = 3'b001,
ENTRY_MODE = 3'b010,
DISP_ONOFF = 3'b011,
LINE1 = 3'b100,
LINE2 = 3'b101,
DELAY_T = 3'b110;
//상수 선언
`define n0 8'h30
`define space 8'h20
`define C 8'h43
`define E 8'h45
`define O 8'h4F
`define R 8'h52
`define S 8'h53
always @(posedge CLK or negedge RESET)
begin
if (~RESET)
begin
CAL_TEXT = {`space,`space,`space,`space,`space,`space,
`space,`space,`space,`space,`space,`space,`space,`space,`space,`space};
end
else
begin
CAL_TEXT = {`space,NUMBER1,NUMBER2,facto1,OP,NUMBER3,NUMBER4,facto2,8'b00111101,`space,
ANS1,ANS2,ANS3,ANS4,ANS5,`space};
end
end
always @(posedge CLK or negedge RESET)
begin
if (~RESET)
begin
BUTTON0 <=0; BUTTON1 <=0; BUTTON2 <=0;BUTTON3 <=0;
BUTTON4 <=0; BUTTON5 <=0; BUTTON6 <=0; BUTTON7 <=0; BUTTON8 <=0; BUTTON9<=0;
BUTTON10<=0; BUTTON11 <=0; BUTTON12<=0; BUTTON13<=0; BUTTON14<=0; BUTTON15<=0;
BUS0<=0; BUS1<=0; BUS2<=0; BUS3<=0; BUS4<=0;
end
else
begin
BUTTON0 <= ~BUTTON[0]; BUTTON1 <= ~BUTTON[1]; BUTTON2 <= ~BUTTON[2];
BUTTON3 <= ~BUTTON[3]; BUTTON4 <= ~BUTTON[4]; BUTTON5 <= ~BUTTON[5]; BUTTON6 <= ~BUTTON[6];
BUTTON7 <= ~BUTTON[7]; BUTTON8 <= ~BUTTON[8]; BUTTON9 <= ~BUTTON[9]; BUTTON10 <= ~BUTTON[10];
BUTTON11 <= ~BUTTON[11]; BUTTON12 <= ~BUTTON[12]; BUTTON13 <= ~BUTTON[13];
BUTTON14 <= ~BUTTON[14]; BUTTON15 <= ~BUTTON[15];
BUS0<=~BUS[0]; BUS1<=~BUS[1]; BUS2<=~BUS[2];
BUS3<=~BUS[3]; BUS4<=~BUS[4];
end
end
assign BUTTONe_0 = BUTTON0 & BUTTON[0]; //CLK가 아무리 돌아도 BUTTONe_N은 한번만 1이 된다.
assign BUTTONe_1 = BUTTON1 & BUTTON[1];
assign BUTTONe_2 = BUTTON2 & BUTTON[2];
assign BUTTONe_3 = BUTTON3 & BUTTON[3];
assign BUTTONe_4 = BUTTON4 & BUTTON[4];
assign BUTTONe_5 = BUTTON5 & BUTTON[5];
assign BUTTONe_6 = BUTTON6 & BUTTON[6];
assign BUTTONe_7 = BUTTON7 & BUTTON[7];
assign BUTTONe_8 = BUTTON8 & BUTTON[8];
assign BUTTONe_9 = BUTTON9 & BUTTON[9];
assign BUTTONe_10 = BUTTON10 & BUTTON[10];
assign BUTTONe_11 = BUTTON11 & BUTTON[11];
assign BUTTONe_12 = BUTTON12 & BUTTON[12];
assign BUTTONe_13 = BUTTON13 & BUTTON[13];
assign BUTTONe_14 = BUTTON14 & BUTTON[14];
assign BUTTONe_15 = BUTTON15 & BUTTON[15];
assign BUS0_e = BUS0 & BUS[0];
assign BUS1_e = BUS1 & BUS[1];
assign BUS2_e = BUS2 & BUS[2];
assign BUS3_e = BUS3 & BUS[3];
assign BUS4_e = BUS4 & BUS[4];
//--------------------------------BUTTON CLK 최적화----------------------------
//2018440087
//STATE 변화
always @ (negedge RESET or posedge CLK)
begin
if(RESET == 1'b0)
STATE <= DELAY;
else
begin
case (STATE)
//2018440087
DELAY :
if (CNT == 70) STATE <= FUNCTION_SET;
FUNCTION_SET :
if (CNT == 30) STATE <= DISP_ONOFF;
DISP_ONOFF :
if (CNT == 30) STATE <= ENTRY_MODE;
ENTRY_MODE :
if (CNT == 30) STATE <= LINE1;
LINE1 :
if (CNT == 20) STATE <= LINE2;
LINE2 :
if (CNT == 20) STATE <= LINE1;
default : STATE <= DELAY;
endcase
end
end
//CNT 변화
always @ (negedge RESET or posedge CLK)
begin
if(RESET == 1'b0)
CNT <= 0;
else
begin
case (STATE)
DELAY :
if (CNT >= 70) CNT <= 0;
else CNT <= CNT + 1;
FUNCTION_SET :
if (CNT >= 30) CNT <= 0;
else CNT <= CNT + 1;
DISP_ONOFF :
if (CNT >= 30) CNT <= 0;
else CNT <= CNT + 1;
ENTRY_MODE :
if (CNT >= 30) CNT <= 0;
else CNT <= CNT + 1;
LINE1 :
if (CNT >= 20) CNT <= 0;
else CNT <= CNT + 1;
LINE2 :
if (CNT >= 20) CNT <= 0;
else CNT <= CNT + 1;
default : CNT <= 0;
endcase
end
end
//LCD_DATA에 데이터 입력
always @ (negedge RESET or posedge CLK)
begin
if(RESET == 1'b0)
begin
LCD_RS <= 1'b1;
LCD_RW <= 1'b1;
LCD_DATA <= 8'b00000000;
end
else
begin
case (STATE)
FUNCTION_SET :
begin LCD_RS <= 1'b0; LCD_RW <= 1'b0; LCD_DATA <= 8'b00111100; end
DISP_ONOFF :
begin LCD_RS <= 1'b0; LCD_RW <= 1'b0; LCD_DATA <= 8'b00001100; end
ENTRY_MODE :
begin LCD_RS <= 1'b0; LCD_RW <= 1'b0; LCD_DATA <= 8'b00000110; end
LINE1 :
begin
LCD_RW <= 1'b0;
case(CNT)
0 : begin LCD_RS <= 1'b0; LCD_DATA <= 8'b10000000; end
1 : begin LCD_RS <= 1'b1; LCD_DATA <= 8'b00110010; end//2
2 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= 8'b00110000; // 0;
end
3 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= 8'b00110001; // 1
//2018440087
end
4 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= 8'b00111000; // 8
end
5 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= 8'b00110100; //4
//2018440087
end
6 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= 8'b00110100; // 4
end
7 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= 8'b00110000; // 0
end
8 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= 8'b00110000; //0
end
9 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= 8'b00111000; // 8
end
10 :
begin
LCD_RS <= 1'b1;
LCD_DATA <=8'b00110111; // 7
end
11 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= `space;
end
12 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= `space;
end
13 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= `O;
end
14 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= `C;
end
15 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= `S;
end
16 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= `space;
end
default :
begin
LCD_RS <= 1'b1;
LCD_DATA <= 8'b00100000;
end
endcase
//2018440087
end
LINE2 :
begin
LCD_RW <= 1'b0;
case(CNT)
0 :
begin
LCD_RS <= 1'b0;
LCD_DATA <= 8'b11000000;
end
1 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= CAL_TEXT[127:120];
end
2 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= CAL_TEXT[119:112];
end
3 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= CAL_TEXT[111:104];
end
4 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= CAL_TEXT[103:96];
end
5 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= CAL_TEXT[95:88];
end
6 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= CAL_TEXT[87:80];
end
7 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= CAL_TEXT[79:72];
end
8 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= CAL_TEXT[71:64];
end
9 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= CAL_TEXT[63:56];
end
10 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= CAL_TEXT[55:48];
//2018440087
end
11 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= CAL_TEXT[47:40];
end
12 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= CAL_TEXT[39:32];
end
13 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= CAL_TEXT[31:24];
end
14 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= CAL_TEXT[23:16];
end
15 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= CAL_TEXT[15:8];
end
16 :
begin
LCD_RS <= 1'b1;
LCD_DATA <= CAL_TEXT[7:0];
end
default :
begin
LCD_RS <= 1'b1;
LCD_DATA <= 8'b00100000;
end
endcase
end
default :
begin
LCD_RS <= 1'b1;
LCD_DATA <= 8'b00000000;
end
endcase
end
end
assign LCD_E = CLK;
//입력 & 연산
always @(posedge CLK or negedge RESET)
begin
if(~RESET)
begin
check <= 1;
temp1 <= 0;
temp2 <= 0;
temp3 <= 1;
NUMBER1 <= `space;
NUMBER2 <= `space;
NUMBER3 <= `space;
NUMBER4 <= `space;
OP <= `space;
NUM1 <= 0;
NUM2 <= 0;
NUM_temp <= 0;
Memory1 <=0;
//2018440087
Memory2 <=0;
ANS1 <= `space;
ANS2 <= `space;
ANS3 <= `space;
ANS4 <= `space;
ANS5 <= `space;
save_op <= 0;
facto1 <= `space;
facto2 <= `space;
end
else
begin
if (BUTTONe_11) //리셋
begin
check <= 1; temp1 <= 0; temp2 <= 0; temp3 <= 1;
NUMBER1 <= `space; NUMBER2 <= `space; NUMBER3 <= `space; NUMBER4 <= `space;
OP <= `space; NUM1 <= 0; NUM2 <= 0; NUM_temp <= 0;
ANS1 <= `space; ANS2 <= `space; ANS3<= `space; ANS4 <= `space; ANS5 <= `space;
save_op <= 0; facto1 <= `space; facto2 <= `space;
end
else if (BUS1_e) //팩토리
begin
if (save_op==0)
begin
NUMBER1 <= `space;
case (NUM1) //연산 계산
0 : begin NUM1 <= 1; facto1 <=8'b00100001; temp1 <=1; end
1 : begin NUM1 <= 1; temp1 <= 1; facto1 <=8'b00100001;end
2 : begin NUM1 <= 2; temp1 <= 2; facto1 <=8'b00100001;end
3 : begin NUM1 <= 6; temp1 <= 6; facto1 <=8'b00100001;end
4 : begin NUM1 <= 24; temp1 <= 24; facto1 <=8'b00100001;end
5 : begin NUM1 <= 120; temp1 <= 120; facto1 <=8'b00100001;end
6 : begin NUM1 <= 720; temp1 <= 720; facto1 <=8'b00100001;end
7 : begin NUM1 <= 5040; temp1 <= 5040; facto1 <=8'b00100001;end
8 : begin NUM1 <= 40320; temp1 <= 40320; facto1 <=8'b00100001;end
9 : begin NUM1 <= 362880; temp1 <= 362880; facto1 <=8'b00100001;end
default : NUM1 <= NUM1;
endcase
end
else
begin
NUMBER3 <= `space;
NUMBER4 <= 8'b00110000 + NUM2;
case (NUM2) //연산 계산
0 : begin NUM2 <= 1; temp2 <=1; facto2 <=8'b00100001;end
1 : begin NUM2 <= 1; temp2 <=1; facto2 <=8'b00100001;end
2 : begin NUM2 <= 2; temp2 <=2; facto2 <=8'b00100001;end
3 : begin NUM2 <= 6; temp2 <=6; facto2 <=8'b00100001;end
4 : begin NUM2 <= 24; temp2 <=24; facto2 <=8'b00100001;end
5 : begin NUM2 <= 120; temp2 <=120; facto2 <=8'b00100001;end
6 : begin NUM2 <= 720; temp2 <=720; facto2 <=8'b00100001;end
7 : begin NUM2 <= 5040; temp2 <=5040; facto2 <=8'b00100001;end
8 : begin NUM2 <= 40320; temp2 <=40320; facto2 <=8'b00100001;end
9 : begin NUM2 <= 362880; temp2 <=362880; facto2 <=8'b00100001;end
default : NUM2 <= NUM2;
endcase
end
end
else if (BUS3_e) //메모리 작동
begin
if (check ==1 | check==2) //첫 숫자 입력할 때 켰으면 첫 자리에 메모리 값 입력
begin
NUMBER1 <= 8'b00110000 + Memory1;
NUM1 <= Memory1*10;
save1 <= Memory1*10;
temp1 <=Memory1*10;
NUMBER2 <= 8'b00110000 + Memory2;
NUM1 <= NUM1 + Memory2;
save1 <= NUM1 + Memory2;
temp1 <=NUM1 + Memory2;
check <=3;
end
else if (check ==4 | check==5) // 두번째 숫자 입력 할 때
begin
NUMBER3 <= 8'b00110000 +Memory1;
NUM2 <= Memory1*10;
save2 <= Memory1*10;
temp2 <=Memory1*10;
NUMBER4 <= 8'b00110000 +Memory2;
NUM2 <= NUM2+Memory2;
save2 <= NUM2+Memory2;
//2018440087
temp2 <=NUM2+Memory2;
check <=6;
end
else // Memory에 값을 저장하기
begin
Memory1 <= ANS4;
Memory2 <= ANS5;
end
end
else if (check == 1) // 초기화를 해야 입력가능 첫 숫자 십의 자리
begin
if (BUTTONe_9)
begin
NUMBER1 <= 8'b00110000; //LCD_DATA에 입력 할 데이타
NUM1 <= 0; // 연산에 필요한 데이타
save1 <= 0;
temp1 <=0;
check <= 2;
end
else if (BUTTONe_0)
begin
NUMBER1 <= 8'b00110001;
NUM1 <= 10;
save1 <= 1;
temp1 <=10;
check <= 2;
end
else if (BUTTONe_1)
begin
NUMBER1 <= 8'b00110010;
NUM1 <= 20;
save1 <= 2;
temp1 <=20;
check <= 2;
end
else if (BUTTONe_2)
begin
NUMBER1 <= 8'b00110011;
NUM1 <= 30;
save1 <= 3;
temp1 <=30;
check <= 2;
end
else if (BUTTONe_3)
begin
NUMBER1 <= 8'b00110100;
NUM1 <= 40;
save1 <= 4;
temp1 <=40;
check <= 2;
end
else if (BUTTONe_4)
begin
NUMBER1 <= 8'b00110101;
NUM1 <= 50;
save1 <= 5;
temp1 <=50;
check <= 2;
end
else if (BUTTONe_5)
begin
NUMBER1 <= 8'b00110110;
NUM1 <= 60;
save1 <= 6;
temp1 <=60;
check <= 2;
end
else if (BUTTONe_6)
begin
NUMBER1 <= 8'b00110111;
NUM1 <= 70;
save1 <= 7;
temp1 <=70;
check <= 2;
end
else if (BUTTONe_7)
begin
NUMBER1 <= 8'b00111000;
NUM1 <= 80;
save1 <= 8;
temp1 <=80;
//2018440087
check <= 2;
end
else if (BUTTONe_8)
begin
NUMBER1 <= 8'b00111001;
NUM1 <= 90;
save1 <= 9;
temp1 <=90;
check <= 2;
end
else
begin
check <= check;
end
end
// 첫 숫자 일의 자리
else if (check == 2)
begin
if (BUTTONe_9)
begin
NUMBER2 <= 8'b00110000;
NUM1<= NUM1 + 0;
save2 <= 0;
temp1 <= temp1 +0;
check <= 3;
end
else if (BUTTONe_0)
begin
NUMBER2 <= 8'b00110001;
NUM1 <= NUM1 + 1;
save2 <= 1;
temp1 <= temp1 +1;
check <= 3;
end
else if (BUTTONe_1)
begin
NUMBER2 <= 8'b00110010;
NUM1 <= NUM1 + 2;
save2 <= 2;
temp1 <= temp1 +2;
check <= 3;
end
else if (BUTTONe_2)
begin
NUMBER2 <= 8'b00110011;
NUM1 <= NUM1 + 3;
save2<= 3;
temp1 <= temp1 +3;
check <= 3;
end
else if (BUTTONe_3)
begin
NUMBER2 <= 8'b00110100;
NUM1 <= NUM1 + 4;
save2 <= 4;
temp1 <= temp1 +4;
check <= 3;
end
else if (BUTTONe_4)
begin
NUMBER2 <= 8'b00110101;
NUM1 <= NUM1 + 5;
save2 <= 5;
temp1 <= temp1 +5;
check <= 3;
end
else if (BUTTONe_5)
begin
NUMBER2 <= 8'b00110110;
NUM1 <= NUM1 + 6;
save2 <= 6;
temp1 <= temp1 +6;
check <= 3;
end
else if (BUTTONe_6)
begin
NUMBER2 <= 8'b00110111;
NUM1 <= NUM1 + 7;
save2 <= 7;
temp1 <= temp1 +7;
check <= 3;
end
else if (BUTTONe_7)
begin
NUMBER2 <= 8'b00111000;
NUM1<= NUM1 + 8;
save2 <= 8;
temp1 <= temp1 +8;
check <= 3;
end
else if (BUTTONe_8)
begin
NUMBER2 <= 8'b00111001;
NUM1<= NUM1 + 9;
save2 <= 9;
temp1 <= temp1 +9;
check <= 3;
end
else
begin
check <= check;
//2018440087
end
end
else if (check == 3) // 연산자
begin
if (BUTTONe_12) // 덧셈
begin
OP <= 8'b00101011;
save_op <= 1;
check <= 4;
end
else if (BUTTONe_13) // 뺄셈
begin
OP <= 8'b00101101;
save_op <= 2;
check <= 4;
end
else if (BUTTONe_14) // 곱셈
begin
OP <= 8'b00101010;
save_op <= 3;
check <= 4;
end
else if (BUTTONe_15) // 제곱
begin
OP <= 8'b01011110;
save_op <= 4;
check <= 4;
end
else if (BUS0_e) // 나누기 몫 구하기
begin
NUM_temp1 <= NUM1;
OP <= 8'b00101111; // /
save_op <=5;
check <=4;
end
else if (BUS4_e) // 나누기 나머지 구하기
begin
NUM_temp1 <= NUM1;
OP <= 8'b00100101; //%
save_op <=6;
check <=4;
end
else
begin
check <= check;
end
end
// 두번째 숫자 십의 자리
else if (check == 4)
begin
if (BUTTONe_9)
begin
NUMBER3 <= 8'b00110000;
NUM2 <= 0;
save3 <= 0;
temp2 <= 0;
check <= 5;
end
else if (BUTTONe_0)
begin
NUMBER3 <= 8'b00110001;
NUM2 <= 10;
save3 <= 1;
temp2 <= 10;
check <= 5;
end
else if (BUTTONe_1)
begin
NUMBER3 <= 8'b00110010;
NUM2 <= 20;
save3 <= 2;
temp2 <= 20;
check <= 5;
end
else if (BUTTONe_2)
begin
NUMBER3 <= 8'b00110011;
NUM2 <= 30;
save3 <= 3;
temp2 <= 30;
check <= 5;
end
else if (BUTTONe_3)
begin
NUMBER3 <= 8'b00110100;
NUM2 <= 40;
save3 <= 4;
temp2 <= 40;
check <= 5;
end
else if (BUTTONe_4)
begin
NUMBER3 <= 8'b00110101;
NUM2 <= 50;
save3 <= 5;
temp2 <= 50;
check <= 5;
end
else if (BUTTONe_5)
begin
NUMBER3 <= 8'b00110110;
NUM2 <= 60;
save3 <= 6;
temp2 <= 60;
check <= 5;
end
else if (BUTTONe_6)
begin
NUMBER3 <= 8'b00110111;
NUM2 <= 70;
save3 <= 7;
temp2 <= 70;
check <= 5;
//2018440087
end
else if (BUTTONe_7)
begin
NUMBER3 <= 8'b00111000;
NUM2 <= 80;
save3 <= 8;
temp2 <= 80;
check <= 5;
end
else if (BUTTONe_8)
begin
NUMBER3 <= 8'b00111001;
NUM2 <= 90;
save3 <= 9;
temp2 <= 90;
check <= 5;
end
else
begin
check<= check;
end
end
else if (check == 5) // 두번째 숫자 일의 자리
begin
if (BUTTONe_9)
begin
NUMBER4 <= 8'b00110000;
NUM2 <= NUM2 + 0;
save4 <= 0;
temp2 <= temp2 +0;
check <= 6;
end
else if (BUTTONe_0)
begin
NUMBER4 <= 8'b00110001;
NUM2 <= NUM2 + 1;
save4 <= 1;
temp2 <= temp2 +1;
check <= 6;
end
else if (BUTTONe_1)
begin
NUMBER4 <= 8'b00110010;
NUM2<= NUM2 + 2;
save4 <= 2;
temp2 <= temp2 +2;
check <= 6;
end
else if (BUTTONe_2)
begin
NUMBER4 <= 8'b00110011;
NUM2 <= NUM2 + 3;
save4 <= 3;
temp2 <= temp2 +3;
check <= 6;
end
else if (BUTTONe_3)
begin
NUMBER4 <= 8'b00110100;
NUM2 <= NUM2 + 4;
save4 <= 4;
temp2 <= temp2 +4;
check <= 6;
end
else if (BUTTONe_4)
begin
NUMBER4 <= 8'b00110101;
NUM2 <= NUM2 + 5;
save4 <= 5;
temp2 <= temp2 +5;
check <= 6;
end
else if (BUTTONe_5)
begin
NUMBER4 <= 8'b00110110;
NUM2 <= NUM2 + 6;
save4 <= 6;
temp2 <= temp2 +6;
check <= 6;
end
else if (BUTTONe_6)
begin
NUMBER4 <= 8'b00110111;
NUM2 <= NUM2 + 7;
save4 <= 7;
temp2 <= temp2 +7;
check <= 6;
//2018440087
end
else if (BUTTONe_7)
begin
NUMBER4 <= 8'b00111000;
NUM2 <= NUM2 + 8;
save4 <= 8;
temp2 <= temp2 +8;
check <= 6;
end
else if (BUTTONe_8)
begin
NUMBER4 <= 8'b00111001;
NUM2 <= NUM2 + 9;
save4 <= 9;
temp2 <= temp2 +9;
check <= 6;
end
else
begin
check <= check;
end
end
else if (check ==6) // enter 누를 때까지 대기
begin
if (BUTTONe_10)
begin
check<=7;
end
else
check<=check;
end
else if (check == 7)
begin
case (save_op) //연산 계산
1 : begin NUM_temp <= NUM1 + NUM2; check <= 8; end
2 : begin NUM_temp <= NUM1 - NUM2; check <= 8; end
3 : begin NUM_temp <= NUM1 * NUM2; check <= 8; end
4 : begin
if (temp2>0)