Upload hello world template

src/main.s

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+.import serial_setup
+.import serial_print_char
+
+.segment "ZEROPAGE"
+; Zero-page variables ($0000 - $00ff)
+
+.segment "BSS"
+; RAM variables ($0100 - $7fff)
+
+.segment "CODE"
+; Actual program code ($c000 - $fff9)
+
+reset:  ; Program starts here
+    jsr serial_setup
+
+    ldx #0
+hello_world_loop:
+    lda str_hello_world,x   ; get char
+    beq hello_world_end     ; IF char is 0, done
+    jsr serial_print_char   ; send char to console
+    inx                     ; increment x (next char)
+    jmp hello_world_loop
+hello_world_end:
+    jmp hello_world_end
+
+
+irq:    ; IRQ Handler
+    rti ; Do nothing
+
+nmi:    ; NMI handler
+    rti ; Do nothing
+
+str_hello_world:
+.asciiz "Hello, World!"
+
+.segment "VECTORS"
+; NMI, RESET and IRQ vectors
+.word nmi
+.word reset
+.word irq