.MCALL	.MODULE
.MODULE	INDASK,VERSION=01,COMMENT=<ASK directive>,GLOBAL=.IASK

; Copyright (c) 1998 by Mentec, Inc., Nashua, NH.
; All rights reserved
;
; 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 provided  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 Mentec, Inc.
;
; The information in this document is subject to change without
; notice and should not be construed as a commitment by Digital
; Equipment Corporation, or Mentec, Inc.
;
; Digital and Mentec  assume  no  responsibility for the use or
; reliability of its software on equipment which is not supplied
; by Digital  or Mentec,  and listed  in the  Software  Product
; Description.
.ENABL	GBL,LC

	.SBTTL	Macro definitions and internal data

	.MCALL	DEFIN$

DEFIN$				;Definitions for IND files

	.PSECT	INDASK
	.SBTTL	ASK directives

;+
;The following are entry points for the ask directives (.ASK, .ASKN, and
;.ASKS).  Upon entering the appropriate symbol type is set for the symbol.
;Then the routine calls INDAS1 to construct the prompt string and recieve
;the response.  After recieving the response, INDAS2 is called to process
;interpret the response. If the c-bit is set upon return from INDAS2 an
;error occured and a response is again requested.
;-

	.ENABL	LSB
ASK::	CLRB	R5		;Set symbol type to logical
	.ASSUME <TF> EQ 0
	MOV	#1,DEF		;Logical default is FALSE
	.ASSUME <LOGF> EQ 1
	BR	1$		;Goto common code

ASKN::	MOVB	#<NUM>,R5	;Set symbol type to numeric
	CLR	DEF		;Default is 0
	MOV	#-1,HIGH	;Default high limit is 177777
	BR	1$		;Goto common code

ASKS::	MOVB	#<STR>,R5	;Set symbol type to string
	CLR	DEF		;Default is 0
	MOV	#ASKBL-3,HIGH	;Default high limit is 132
1$:	MOV	R0,CLPTR	;Save command line pointer
	MOVB	R5,SYMTP	;Save symbol type
	CLR	TIMBLK		;Clear first word of timeout block
	CLR	TIMBLK+2	;Clear second word of timeout block
	CLR	LOW		;Clear low limit area
	CLR	TMOUT		;Assume no timeout value specified
	CLRB	ARG		;Assume no argument is specified
;	CLC			;C-bit should be clear from previous CLR inst.
2$:	CALL	INDAS1		;Generate message, prompt and get response
3$:	CALL	INDAS2		;Read answer and store result
	BCS	2$		;Illegal response - retry
	JMP	INDRD		;Valid response - process next line

	.DSABL	LSB

	.END