; crt0.s - Custom startup code for junior computer

;.segment "CODE"
.segment "STARTUP"
.export __STARTUP__ : absolute = 1


.export __reset_handler
.import main      ; 

.proc __reset_handler: near
    SEI         ; Disable interrupts
    CLD         ; Disable decimal mode
    LDX #$FF
    TXS         ; Set stack pointer to $FF

    ; Clear lower RAM (0x00-0xFF)
    LDA #0
    LDX #0
clear_ram:
    STA $00,X
    INX
    BNE clear_ram

    ;JSR main    ; Call C main()
    JMP *       ; Loop forever
.endproc