.TITLE	CVTOB - Convert binary to decimal.
	.VERSION 20
	.ENABLE	7BIT
/ ++
/	CVTOB Y2.0
/
/	(c) 1988, 1989 by Johnny Billquist
/
/	History:
/
/	88/12/29 15:15	BQT	X1.0. Initial coding.
/	89/01/04 15:35	BQT	X1.1. Split into PRSLIB.
/	89/12/27 05:00	BQT	Y2.0. Made from STRLIB.
/
/ --
/
	.FSECT	CVTOB
/
/ CVTOB convert an octal ascii string into binary.
/
	0			/For return address.
	CLA
	TAD I	CVTOB		/Get arg1.
	ISZ	CVTOB
	DCA	SP$		/Save as source pointer.
	RDF			/Get return field.
	TAD	(CDF CIF)
	DCA	R$
	DCA	V$		/Clear value.
1$:	TAD I	SP$		/Get char.
	ISZ	SP$		/Bump pointer.
	TAD	(-60)		/Check if octal digit.
	SPA
	JMP	E$		/Was not.
	TAD	(-10)
	SMA
	JMP	E$		/Was not.
	TAD	(10)
	DCA	T$		/Was. Save number.
	TAD	V$		/Get value.
	RTL;RAL			/Shift one digit left.
	AND	(7770)		/Clear low digit.
	TAD	T$		/Insert number at low digit.
	DCA	V$		/Save value.
	JMP	1$		/Repeat.
E$:	CLA			/End of convert.
	TAD	V$		/Get value.
R$:	HLT			/Return field.
	JMP I	CVTOB		/Return.

SP$:	0			/Source pointer.
V$:	0			/Value.
T$:	0			/Number.
/
$