/
/ COPYRIGHT (C) 1975
/ DIGITAL EQUIPMENT CORPORATION, MAYNARD, MASS.
/
/ THIS SOFTWARE IS FURNISHED UNDER A LICENSE FOR USE ONLY
/ ON A SINGLE COMPUTER SYSTEM AND MAY BE COPIED ONLY WITH
/ THE INCLUSION OF THE ABOVE COPYRIGHT NOTICE.  THIS
/ SOFTWARE, OR ANY OTHER COPIES THEREOF, MAY NOT BE PRO-
/ VIDED OR OTHERWISE MADE AVAILABLE TO ANY OTHER PERSON
/ EXCEPT FOR USE ON SUCH SYSTEM AND TO ONE WHO AGREES TO
/ THESE LICENSE TERMS.  TITLE TO AND OWNERSHIP OF THE
/ SOFTWARE SHALL AT ALL TIMES REMAIN IN DEC.
/
/ THE INFORMATION IN THIS DOCUMENT IS SUBJECT TO CHANGE
/ WITHOUT NOTICE AND SHOULD NOT BE CONSTRUED AS A COM-
/ MITMENT BY DIGITAL EQUIPMENT CORPORATION.
/
/ DEC ASSUMES NO RESPONSIBILITY FOR THE USE OR RELIABILITY
/ OF ITS SOFTWARE ON EQUIPMENT WHICH IS NOT SUPPLIED BY
/ DEC.
/
	.EJECT
/
/
/	SYSDEV TRANS IN SGNBLK AND RETURNS A VALUE INDICATING THE SYSTEM
/	DEVICE AS FOLLOWS:
/
/			RK = 1
/			DP = 2
/			DK = 3
/			ERROR = 0	!! MNEMONIC NOT RECOGNIZED !!
/
/
/	WRITTEN BY: GARTH A. REID	OCTOBER 6, 1975
/
/
/	.DAT SLOT USAGE:
/
/			-1 - MUST BE ASSIGNED TO THE SYSTEM DEVICE.
/
/
	.GLOBL	SYSDEV,.DA
	.IODEV	-1
SYSDEV	XX
	JMS*	.DA
	JMP	.+2
ANS	0
	.INIT	-1,0,0
	.TRAN	-1,0,36,BUF,256	/READ IN SGNBLK.
	.WAIT	-1		/
	LAC	BUF+4		/PICK UP THE SYSTEM DEVICE MNEMONIC IN SIXBT.
	SAD	RK		/RK?
	SKP			/YES.
	JMP	.+3		/NO.
	LAC	(1)
	JMP	AN.PT
	SAD	DP		/DP?
	SKP			/YES.
	JMP	.+3		/NO.
	LAC	(2)
	JMP	AN.PT
	SAD	DK		/DK?
	SKP			/YES.
	JMP	.+3		/NO.
	LAC	(3)
	JMP	AN.PT
	CLA			/ERROR -- MNEMONIC NOT RECOGNIZED!!
AN.PT	DAC*	ANS
	JMP*	SYSDEV
RK	.SIXBT	'RK'
DP	.SIXBT	'DP'
DK	.SIXBT	'DK'
BUF	.BLOCK	400
	.END	SYSDEV