Try this.

DEFINE OSC 20
INCLUDE "modedefs.bas"
PAUSE 1000
start:
SEROUT portb.1,2,[1]
PAUSE 40
SEROUT portb.1,2,[72,101,108,108,111,8,87,111,114,108,100]
PAUSE 400
GOTO start
END

Assuming where talking about the same display, the above in theory should work. Make shure the jumper is attached on the lcd.

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