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	UNIVERSAL RDRMAC -- Monitor specific definitions for RDREG
	SUBTTL	G.M. Uhler/GMU


;This universal file contains the monitor specific definitions for the
;assembly of RDREG.  By changing the value of the symbol TOPS on the next
;page, RDREG may be assembled for either the TOPS-10 or TOPS-20 monitors.



	.DIRECTIVE .XTABM,FLBLST,.NOBIN
	SALL


;Copyright (C) 1980,1981,1982,1983 by
;Digital Equipment Corporation, Maynard, Mass.
;
;
;This software is furnished under a license and may be used and copied
;only  in  accordance  with  the  terms  of  such license and with the
;inclusion of the above copyright notice.  This software or any  other
;copies thereof may not be provided or otherwise made available to any
;other person.  No title to and ownership of the  software  is  hereby
;transferred.
;
;The information in this software is subject to change without  notice
;and  should  not  be  construed  as a commitment by Digital Equipment
;Corporation.
;
;Digital assumes no responsibility for the use or reliability  of  its
;software on equipment which is not supplied by Digital.


	RDMVER==1		;Major version
	RDMMIN==0		;Minor version
	RDMEDT==0		;Edit number
	RDMWHO==0		;Who edited

	SUBTTL	Parameter definitions


;The following symbol determines which monitor RDREG is to be assembled
;for.  Setting the symbol TOPS to the value 10 (octal) will cause RDREG
;to be assembled for the TOPS-10 monitor.  Setting the symbol TOPS to
;the value 20 (octal) will cause RDREG to be assembled for the TOPS-20
;monitor.  The rest of this file contains conditionally assembled definitions
;that depend on the value of TOPS.


IFNDEF TOPS, <TOPS==10>		;Default assembly is for TOPS-10



;The following statement defines the symbol IF as a synonym for IFE.
;This lets us do conditional assembly of the form IF TOPS-10,<>.

	SYN	IFE,IF



;Define the ACs used by the program

	T1==1			;First of 4 temporary register
	T2==2
	T3==3
	T4==4
	P1==5			;First of 3 preserved registers
	P2==6
	P3==7
	N==P3			;Returned numbers
	C==10			;Character
	DTR==11			;Drive type register index
	P==17			;PDL pointer

	SUBTTL	TOPS-10 specific definitions


IF TOPS-10,<

	OPDEF	CALL[PUSHJ P,0]	;Define the CALL instruction
	OPDEF	RET[POPJ P,0]	;Define the RET instruction


;Define the RETSKP macro to give a skip return

	DEFINE	RETSKP,<
	  JRST	.POPJ1
	>

;Define the USRIOT macro to get User IOT privs

	DEFINE	USRIOT,<
	  XLIST
	  MOVEI	T1,0		;;TRPSET with a zero arg gives
	  LIST
	  TRPSET T1,		;;  us User IOT
	>

>

	SUBTTL	TOPS-20 specific definitions


IF TOPS-20,<

;Define the EXIT macro so that we can use EXIT for both TOPS-10 and
;TOPS-20

	DEFINE	EXIT,<
	  XLIST
	  RESET			;;Reset the program
	  LIST
	  HALTF			;;Stop it
	  XLIST
	  JRST	.-1		;;No restart
	  LIST
	>


;Define the RETSKP macro to give a skip return

	DEFINE	RETSKP,<
	  JRST	.POPJ1
	>


;Define the USRIOT macro to get User IOT privs

	DEFINE	USRIOT,<
	  USRIO			;;Use the USRIO JSYS
	>


;Opdef MONRT. to be HALTF so we can use MONRT. for both TOPS-10 and TOPS-20.

	OPDEF	MONRT.[104000,,170]


;Ofdef PJRST to be JRST

	OPDEF	PJRST[JRST]

> ;End IF TOPS-20


	END