.Model small
code_seg        segment         'code'
                assume cs:code_seg

                ORG 0000h

                                        ;store constant values
                DW 0200h                ;new IP for main program
                DW 0FF80h               ;new CS for main program
                                        ;CS + IP = FFA00h = 200h in ROM

                ORG 0200h
        init:   MOV AX, 0F000h          ;initialization
                MOV DS, AX              ;set DS to F0000h to target peripherals

        main:                           ;main program - start inifinite loop

        comm:                           ;read input port register

        lamp:                           ;turn lamp on/off

        lght:                           ;read photoresistor and A/D circuit data

        fifo:                           ;write the data to the fifo


                JMP main

                ORG 07F0h
        cold:   MOV AX, 0FF80h
                MOV DS, AX              ;set DS to FF800h=000h in ROM
                MOV BX, 0000h
                JMP DWORD PTR [BX]
                END
code_seg        ends