AHDL Code Errors

I am getting these errors in my code and I have no idea where I went wrong:

Error $(287127)$: Text Design File syntax error: Text Design File contains $\text{'}(\text{'}$ where $\text{'}$:$\text{'}$ was expected

Error $(287127)$: Text Design File syntax error: Text Design File contains $\text{'}=\text{'}$ where $\text{'})\text{'}$ was expected

Error $(287127)$: Text Design File syntax error: Text Design File contains ELSIF where END was expected

Error $(287127)$: Text Design File syntax error: Text Design File contains ELSIF where END was expected

Error $(287127)$: Text Design File syntax error: Text Design File contains ELSIF where END was expected

Here is my code, any help would be appreciated:

SUBDESIGN miniproject

$($

clk$,$ reset$\_$n$,$ SW$9,$ SW$0,$ KEY$3,$ KEY$2,$ KEY$1,$ KEY$0$ : INPUT; $--$ Inputs

HEX$5\backslash [6.\mathrm{.}0\backslash ],$ HEX$2\backslash [6.\mathrm{.}0\backslash ],$ HEX$1\backslash [6.\mathrm{.}0\backslash ],$ HEX$0\backslash [6.\mathrm{.}0\backslash ],--7-$segment display outputs LEDR$2,$ LEDR$1,$ LEDR$0,$ LEDR$9$ : OUTPUT; $--$ LED outputs

$)$

VARIABLE

balance : UNSIGNED$(8)$; $--$ Account balance, $8-$bit

next$\_$balance : UNSIGNED$(8)$; $--$ Next state balance value

state : UNSIGNED$(2)$; $--$ State machine variable

countdown$\_$timer: UNSIGNED$(4)$; $--$ Countdown timer $(9-0)$

sec$\_$count : UNSIGNED$(26)$; $--$ Counter for $1$Hz clock

clk$\_1$hz : NODE; $--1$Hz clock signal

BEGIN

RESET $=0$;

IDLE $=1$;

DEPOSIT $=2$;

WITHDRAW $=3$;

MAX$\_$BALANCE $=255$;

ONE$\_$SEC$\_$COUNT $=50000000$;

$--$ Clock divider to generate $1$Hz clock

sec$\_$count.CLK $=$ clk;

IF reset$\_$n $==$ GND THEN

sec$\_$count $=0$;

ELSE

IF sec$\_$count $==$ ONE$\_$SEC$\_$COUNT $-1$ THEN

sec$\_$count $=0$;

ELSE

sec$\_$count $=$ sec$\_$count $+1$;

END IF;

END IF;

clk$\_1$hz $=($sec$\_$count $==$ ONE$\_$SEC$\_$COUNT $-1)$;

$--$ State Machine Logic

state.CLK $=$ clk;

balance.CLK $=$ clk;

CASE state IS

WHEN RESET $=>$

next$\_$balance $=0$;

IF reset$\_$n $==$ VCC THEN

state $=$ IDLE;

END IF;

WHEN IDLE $=>$

IF SW$9==$ VCC THEN

state $=$ DEPOSIT;

ELSIF SW$0==$ VCC THEN

state $=$ WITHDRAW;

END IF;

WHEN DEPOSIT $=>$

IF $($KEY$3==$ GND AND $($balance $+1<=$ MAX$\_$BALANCE$))$ THEN

next$\_$balance $=$ balance $+1$; $--$ Deposit $$1$

ELSIF $($KEY$2==$ GND AND $($balance $+10<=$ MAX$\_$BALANCE$))$ THEN

next$\_$balance $=$ balance $+10$; $--$ Deposit $$10$

ELSIF $($KEY$1==$ GND AND $($balance $+100<=$ MAX$\_$BALANCE$))$ THEN

next$\_$balance $=$ balance $+100$;$--$ Deposit $$100$

END IF;

state $=$ IDLE;

WHEN WITHDRAW $=>$

IF $($KEY$3==$ GND AND balance $=1)$ THEN

next$\_$balance $=$ balance $-1$;

LEDR$0=$ VCC; $--$ Withdraw $$1,$ turn on LEDR$[0]$

ELSIF $($KEY$2==$ GND AND balance $>=10)$ THEN

next$\_$balance $=$ balance $-10$;

LEDR$1=$ VCC; $--$ Withdraw $$10,$ turn on LEDR$[1]$

ELSIF $($KEY$1==$ GND AND balance $>=100)$ THEN

next$\_$balance $=$ balance $-100$;

LEDR$2=$ VCC; $--$ Withdraw $$100,$ turn on LEDR$[2]$

ELSIF $(($KEY$3==$ GND AND balance $<1)$ OR

$($KEY$2==$ GND AND balance $<10)$ OR

$($KEY$1==$ GND AND balance $<100))$ THEN

LEDR$9=$ VCC; $--$ Insufficient funds, turn on LEDR$9$

END IF;

state $<=$ IDLE;

END CASE;

balance $<=$ next$\_$balance;

$--$ Countdown timer for $10$ seconds

countdown$\_$timer.CLK $=$ clk$\_1$hz;

IF reset$\_$n $==$ GND THEN

countdown$\_$timer $=9$;

ELSIF state $==$ WITHDRAW AND countdown$\_$timer $>0$ THEN

countdown$\_$timer $=$ countdown$\_$timer $-1$;

END IF;

$--$ Countdown display on HEX$5$

WITH countdown$\_$timer SELECT

HEX$5=7$B$"1000000"$ WHEN $0,$

$7$B$"1111001"$ WHEN $1,$

$7$B$"0100100"$ WHEN $2,$

$7$B$"0110000"$ WHEN $3,$

$7$B$"0011001"$ WHEN $4,$

$7$B$"0010010"$ WHEN $5,$

$7$B$"0000010"$ WHEN $6,$

$7$B$"1111000"$ WHEN $7,$

$7$B$"0000000"$ WHEN $8,$

$7$B$"0010000"$ WHEN $9,$

$7$B$"1111111"$ WHEN OTHERS;

$--$ Display balance on $7-$segment displays $($HEX$2-$HEX$0)$

WITH balance$[7.\mathrm{.}4]$ SELECT

HEX$2=7$B$"1000000"$ WHEN $0,$

$7$B$"1111001"$ WHEN $1,$

$7$B$"0100100"$ WHEN $2,$

$7$B$"0110000"$ WHEN $3,$

$7$B$"0011001"$ WHEN $4,$

$7$B$"0010010"$ WHEN $5,$

$7$B$"0000010"$ WHEN $6,$

$7$B$"1111000"$ WHEN $7,$

$7$B$"0000000"$ WHEN $8,$

$7$B$"0010000"$ WHEN $9,$

$7$B$"1111111"$ WHEN OTHERS;

WITH balance$[3.\mathrm{.}0]$ SELECT

HEX$0=7$B$"1000000"$ WHEN $0,$

$7$B$"1111001"$ WHEN $1,$

$7$B$"0100100"$ WHEN $2,$

$7$B$"0110000"$ WHEN $3,$

$7$B$"0011001"$ WHEN $4,$

$7$B$"0010010"$ WHEN $5,$

$7$B$"0000010"$ WHEN $6,$

$7$B$"1111000"$ WHEN $7,$

$7$B$"0000000"$ WHEN $8,$

$7$B$"0010000"$ WHEN $9,$

$7$B$"1111111"$ WHEN OTHERS;

END miniproject;