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LDX #$00 ; Loop index (0-9)
TXA ; Put loop index into A
CLC
LDY #$00 ; Character number to print
LDA MSG,Y ; Get a character
BEQ DONE ; Done if it's NULL
JSR CHROUT ; Print character
INY ; Increment char number
JMP DO CHARACTER ; Process next character
DONE:
INX ; Increment loop index
CPX #10 ; Is it 10?
BNE GO LINE ; If not, branch to GOprint next line
BRK ; Stop
