GitHub_collection_hello-world/a/Assembler pdp11 palx.palx

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.TITLE Hello World
R0=%0
R1=%1
TPS==177564
TPB==177566
.=400
START: MOV #1,@#TPS
MOV #HELLO,R0
LOOP: TSTB @#TPS
BPL LOOP
MOVB (R0)+,R1
BEQ STOP
MOVB R1,@#TPB
BR LOOP
STOP: HALT
HELLO: .ASCIZ /Hello World/
.END START