URGENT!!

The established circuit can count numbers between 0-999. The counting process is directed by pin_a0 as forward counting and counting down. If pin_a0 = 1, it counts in the forward direction 0 => 999. The counting process continues in a loop. If pin_a0 = 0, it counts in the reverse direction, that is, it counts in the direction of 999 => 0. The counting process can be displayed simultaneously on the LCD screen and on the 3-bit 7-segment display.

Please write the required code for counting. Show all your work!

RV1 Say Degeri 989 383 R. 86887885 GRAFE C1 c2" DX1 CRYSTAL SW1 SW SPOT 89 P991 PRAE U1 33 TO OSCICLON RBOINT OSC2 CUKOUT R81 035 RADIANO RESPOM RALIANI RB4 D RAZIANONREF-CVREF RAS RABANI REF. RESPOC RAUTOCXCTOUT FERGO RASIANUS SCOUT RCOTIOSOIT100 REINS RCVT1OSCOP2 RELANSW RCZ CCP1 REZANTIC RCSOKIS RCA SOUSA App/TH ROSSO ROSTICK RCTIXOT st DU BURBO RBI DS 00 ROOPSPO DE RCOPED U3 012 ROUPSPI Da ROMPS RD4PSP D DU ROSPSS D RDS PSPS ROTIPSPT BURBO RBI LT OF 00 PIC16F877A 04 BURBO Bir 9