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Trailing-Edge - PDP-10 Archives - decuslib20-04 - decus/20-0125/code6.for
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	SUBROUTINE CODE6(BYTE, NUM)

C  THIS SUBROUTINE IS USED TO CODE EIGHT BIT
C  BYTES INTO SIX BIT BYTES AND TRANSMIT THEM
C  TO THE GT40

	IMPLICIT INTEGER (A - Z)
	INTEGER BYTE(3), SIX(4)
	IF(NUM .LT. 3) BYTE(3) = 0
	IF(NUM .LT. 2) BYTE(2) = 0
	SIX(1) = GFIELD(BYTE(1), 28, 6)
	SIX(2) = (GFIELD(BYTE(1), 34, 2) * 16) .OR. GFIELD(BYTE(2), 28, 4)
	SIX(3) = (GFIELD(BYTE(2), 32, 4) * 4) .OR. GFIELD(BYTE(3), 28, 2)
	SIX(4) = GFIELD(BYTE(3), 30, 6)
	DO 10 I = 1, 4

C  MAKE SURE ALL CHARACTERS ARE PRINTABLE

		IF(SIX(I) .LT. "40) SIX(I) = SIX(I) + "100
		CALL SNDCHR(SIX(I))
10	CONTINUE
	RETURN
	END