Listing of file='@MENU' on disk='vmedia/2282_graphics_crt_demos.wvd.zip'
# Sector 16, program filename = '@MENU'
0010 REM %@MENU -- SOFTWARE MENU
: REM 12/31/79 REV 07/09/81 BY R.L.Droz
0020 REM @MENU provides a menu structure for program selection.
: REM Multiple levels of menu can be set up with each successive screen
: REM displaying the next menu node. Node information is overlayed in at
0030 REM lines 9000-9999; each node is saved as a separate program file ('24).
: REM Access to the root node is always available with RESET & LOADRUN if
: REM the progam START is this program or loads in this program.
: REM
0035 REM @MENU1 generally operates under the control of a menu stack
: REM kept in file @MENUSTK; @MENU is used in the absence of the stack file
0040 REM @MENU is loaded from a program (eg START) that sets $PSTAT=" ".
: REM $PSTAT indicates which node is to be loaded (if " ", the root node).
: REM @MENU sets $PSTAT=node-name when a program is selected, so that the
0050 REM program can return to this menu node by overlaying in @MENU.
0060 REM %VARIABLES........
: COM C9
: DIM U$8,U1$68,U8$68,U2$30,U6$1,W$(95,3)1,U(5),R$10,W$1,U4$8
0061 REM These variables are not ISS compatible; should be changed
0065 DIM M$(7)33,M1$(7)33,M,S1$64,M0$80
0070 REM Display
: REM W$=cursor
: REM W1=column#
: REM W0=CRT column
: REM W5=# CRT columns
: REM U3=tab
: REM R1=row#
: REM R0=CRT row
: REM R5=# CRT rows
: REM R9=# rows
: REM W$(=item coordinates
: REM U(i)=length column(i)
0080 REM Node Items
: REM U1=# fields/item
: REM U$=filename
: REM U1$,U8$=description
: REM U2$=type
: REM W,R=item#
: REM R2=data record#
: REM U=# extra fields in node descriptor
: REM W9=# items (including blank lines)
: REM W8=# items (excluding blank lines)
: REM U4$=password
0090 REM Other
: REM U6$=keystroke
: REM U4,R$=scratch
0091 REM Menu stack handling
: REM M=Stack pointer
: REM M$()=stack
: REM M1$() external node buffer
0100 DEFFN'126
: RETURN CLEAR ALL
0108 U$=$PSTAT(#PART)
: IF U$=" " THEN U$=".STARTD"
0116 IF U$<>".STARTD" AND U$<>"@STARTD" THEN 130
: DATA LOAD DC OPEN T#U2,U$
: DATA LOAD DC #U2,U$
: IF M>1 THEN $PSTAT=U$
: ELSE $PSTAT=" "
: GOTO 130
0120 REM %GET NEXT NODE
: $PSTAT=U$
0130 LOAD T#U2,U$ 9000,9999 BEG 140
: ERRORPRINT AT(23,0,);HEX(02040B000F0E);"ERROR LOADING MENU NODE ";U$;
: $PSTAT=" "
: GOTO 108
0140 REM NODE DESCRIPTORS
: RESTORE LINE 8100
: READ U$,U1$,U1,U
0150 %DATA LOAD DC #0,M,M$(): DBACKSPACE #0,1S
0160 REM %CRT SIZE
: REM Exit-- R5=#rows, W5=#columns, W$=cursor character
: R5=24
: W5=80
: W$=HEX(8B)
: $GIO/005(7601,R$)
: R$=AND HEX(10)
: IF STR(R$,,1)=HEX(10) THEN 170
: R5=16
: W5=64
: W$="*"
0165 REM %DETERMINE DISPLAY COORDINATES OF NODE ITEMS........
0170 REM %# NODE ITEMS
: R=-1
: RESTORE LINE 8100,5+U
0180 GOSUB 935
: IF U$<>"no more" THEN 180
: W9=R
: W1=INT((W9+R5-6)/(R5-5))
: R9=-INT(-W9/W1)
0190 REM %MAX ITEM LENGTH FOR EACH COL
: R=-1
: W1=0
: MAT U=ZER
: RESTORE LINE 8100,5+U
0200 FOR W=1 TO W9
: GOSUB 935
: IF MOD(R,R9)=0 THEN W1=W1+1
: U(W1)=MAX(U(W1),LEN(U1$)+2)
: NEXT W
0210 REM %CALC. DISPLAY COORDS
: R0=INT((R5-5-R9)/2)+5
: W0,U3=INT((W5-U(1)-U(2)-U(3)-U(4)-U(5))/(W1+1))
: IF U3<5 THEN STOP "Screen too small -- reduce length or no. of items. "
: W8=0
: RESTORE LINE 8100,5+U
: R2=-1
0220 FOR W=1 TO W9
: R1=MOD(W-1,R9)
: W1=INT((W-1)/R9)
: IF R1=0 AND W1>0 THEN W0=W0+U(W1)+U3
: GOSUB 935
: IF STR(U2$,,1)="B" THEN 230
: W8=W8+1
: W$(W8,1)=BIN(R1+R0)
: W$(W8,2)=BIN(W0)
: W$(W8,3)=BIN(R2)
0230 NEXT W
0240 REM %DISPLAY NODE.........
0280 REM %DISPLAY NODE TITLE
: RESTORE LINE 8100
: READ U$,U1$,U1,U
: SELECT PRINT 005(W5),P
: PRINT HEX(020D0C030F06);AT(0,(W5-LEN(U1$))/2);HEX(0E);U1$;HEX(0F)
: PRINT
0290 REM %DISPLAY INSTRUCTIONS
: PRINT AT(2,0);"Select item with SPACE & BACKSPACE."
: PRINT AT(3,0);"Key RETURN to execute, FN for previous menu,"
: PRINT AT(4,0);" SHIFT FN for root menu."
: PRINT AT(2,W5-22);"Partition";#PART;HEX(08);",";SPACEK;"K"
: PRINT AT(3,W5-15);"Terminal";#TERM
0300 REM %DISPLAY NODE
: RESTORE LINE 8100,5+U
: FOR W=1 TO W8
: GOSUB 920
: U8$=U1$
: GOSUB 980
: NEXT W
: W=1
0301 REM % DISPLAY PARTITION WAITING OR $MSG
0302 $IF ON /001,325
: IF R0+R9>21 THEN 325
: M0$=$MSG
: IF M0$<>" " AND RND(1)>.6 THEN 310
0303 GOSUB 700
: IF R$<>"T" THEN 310
0308 PRINT AT(22,10);HEX(020404000E);"At least one background partition is wai
ting for service."
0309 PRINT AT(23,0);HEX(020402000E);TAB(25);"Key SF '4 to Release Terminal";HE
X(0F);
: GOTO 325
0310 M0$=$MSG
: IF M0$=" " THEN 325
0315 PRINT AT(22,0);"SYSTEM BROADCAST MESSAGE:"
: PRINT AT(23,0);M0$;HEX(020402000F);
0324 REM %PROCESS USER REQUESTS........
0325 REM %DISPLAY CURRENT ENTRY HIGHLIT
: RESTORE LINE 8100,5+U+U1*VAL(W$(W,3))
: GOSUB 920
: U8$=U1$
: PRINT HEX(0E);AT(VAL(W$(W,1)),VAL(W$(W,2)));W$;" ";U8$;HEX(0F);
0330 REM %USER REQUEST
: KEYIN U6$,,465
: ON POS(HEX(200882810D)=U6$) GOTO 400,410,420,470,420
0340 REM %Starting character?
: $TRAN(U6$,"AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz") R
: RESTORE LINE 8100,5+U
: R=0
0350 GOSUB 920
: IF W<>R THEN 350
0360 GOSUB 920
: IF U$="no more" THEN 370
: IF STR(U1$,,1)<>U6$ THEN 360
: GOTO 390
0370 RESTORE LINE 8100,5+U
: R=0
0380 GOSUB 920
: IF W=R THEN 330
: IF STR(U1$,,1)<>U6$ THEN 380
0390 GOSUB 980
: W=R
: GOTO 325
0400 REM %SPACE key
: GOSUB 980
: W=MOD(W,W8)+1
: GOTO 325
0410 REM %BACKSPACE key
: GOSUB 980
: W=MOD(W-2,W8)+1
: GOTO 325
0420 REM %RUN key
: RESTORE LINE 8100,5+U
: R=0
: M=M+1
0430 GOSUB 920
: IF W<>R THEN 430
0440 REM Unpack rest of entry
: U7$,U3$,U5$,U4$=" "
: $UNPACK(D=HEX(012C)) U2$ TO R$,U7$,U4$,U3$,U5$
0441 IF STR(R$,,1)="P" THEN 442
: REM IF U3$=" " OR U3$="0" THEN U3$="1"
: REM IF U5$=" " THEN U5$=STR(M$(M-1),22)
: GOTO 443
0442 IF U3$=" " THEN U3$="0"
: REM IF U5$=" " THEN U5$=STR(M$(M-1),22)
0443 CONVERT U3$ TO U2
: ERRORU2=0
0444 CONVERT U7$ TO U4
: ERRORU4=1.25
0445 GOSUB 7010
: $PACK (F=U1$) M$(M) FROM U$,R$,U4,U4$,U2,U5$
0446 %DATA SAVE DC #0,M,M$(): DBACKSPACE #0,1S
0450 REM Check for password
: GOSUB 945
: IF U4$<>" " THEN 108
0452 REM Check SPACEK
: IF U7$=" " THEN 455
: CONVERT U7$ TO U4
: ERRORPRINT "Error in spacek."
: END
0454 IF U4<=SPACEK THEN 455
: SELECT P9
: PRINT HEX(0E);AT(2,0,40);"Insufficient memory.";AT(3,0,48);U4;"K partitio
n required."
: PRINT TAB(79)
: PRINT
: GOTO 108
0455 GOSUB 960
: PRINT AT(4,0,79);AT(3,0,48);AT(2,0,40);HEX(0E05);"Loading ";BOX(1,LEN(U$)
+1);" ";U$;" ";HEX(0F);
: IF STR(R$,,1)<>"P" THEN 130
: RESTORE LINE 8100
: READ R$
: $PSTAT=R$
: IF U2>0 OR U5$=STR(M$(1),22) THEN 464
0464 DATA SAVE DC CLOSE#0
: DATA SAVE DC CLOSE#U2
: LOAD T#U2,U$
: ERRORGOTO 726
0465 REM %SF KEYS
: IF U6$=HEX(7E) OR U6$=HEX(F0) OR U6$=HEX(1F) THEN 470
: IF U6$=HEX(04) THEN 475
: IF U6$<>HEX(7F) AND U6$<>HEX(50) THEN 330
: M=1
: GOTO 108
0470 REM %CLEAR key
: IF U=0 THEN 108
: RESTORE LINE 8100,5
: READ U$
: $PSTAT=U$
: U2$="M"
: R$=" "
: IF U>2 THEN READ R$
: $UNPACK(D=HEX(012C)) R$ TO U3$,U5$
: GOSUB 955
: GOTO 455
0475 GOSUB 700
: IF R$<>"T" THEN 325
: PRINT HEX(020D0C030F);
: $RELEASE TERMINAL
: FOR U4=1 TO 10
: $BREAK 255
: NEXT U4
: GOTO 280
0480 REM %SUBROUTINES.........
0700 PACK (##) R$ FROM #TERM
: STR(R$,2)="W"
0705 FOR U4=1 TO 16
: S1$=$PSTAT(U4)
: ERRORRETURN
0710 IF STR(S1$,15,2)=STR(R$,,2) THEN 715
: NEXT U4
: RETURN
0715 R$="T"
: RETURN
0720 REM % SCAN @XNODES
0725 IF U2>0 THEN 730
: U2=1
: SELECT #0 <STR(M$(1),22)>
0726 DATA LOAD DC OPEN T#0,"@MENUSTK"
: U4=(C9-1)*16+#PART-1
: IF U4>0 THEN DSKIP #0,U4 S
0727 %DATA LOAD DC #0,M,M$(): DBACKSPACE #0,1S
0730 SELECT #U2 <STR(M$(1),22)>
: DATA LOAD DC OPEN T#U2,"@XNODES"
0735 GOSUB '30(STR(M$(M),,9))
: IF U4=0 THEN 755
0740 GOSUB 7010
: $UNPACK (F=U1$) M1$(U4) TO U$,R$,U4,U4$,Q,U5$
: GOSUB 890
0741 SELECT #U2 <U5$>
: ERRORGOTO 755
0742 LIMITS T#U2,U$,U4,U4,U4,Q
: ERRORGOTO 755
0750 IF Q>0 THEN 795
0755 GOSUB 7010
: $UNPACK (F=U1$) M$(M) TO U$,R$,U4,U4$,Q,U5$
: PRINT AT(4,0,)
0760 PRINT AT(6,0); HEX(07); HEX(020404000F0E);"Unable to find file ";U$;" on
disk ";U5$
0765 PRINT AT(7,0);HEX(020402000F0E);"Correct disk address, or key FN to abort
->";
: LINPUT ?- STR(U5$,,3)
0770 IF POS("3BD" = STR(U5$,,1))=0 OR VER(U5$,"HHH")<3 THEN 765
0771 SELECT #U2 <U5$>
: ERRORGOTO 760
0772 LIMITS T#U2,U$,U4,U4,U4,Q
: ERRORGOTO 760
0773 IF Q<1 THEN 760
0780 GOSUB 890
0785 SELECT #U2 <STR(M$(1),22)>
: DATA LOAD DC OPEN T#U2,"@XNODES"
0790 M0$=STR(U$,,8) & R$
: GOSUB '30(M0$)
: IF U4>0 THEN 791
: GOSUB '30(" ")
: IF U4=0 THEN 792
0791 M1$(U4)=M$(M)
: DBACKSPACE #U2,1S
: DATA SAVE DC #U2,M1$()
0792 DATA SAVE DC CLOSE#U2
0795 $UNPACK (F=U1$) M$(M) TO U$,R$,U4,U4$,U2,U5$
0797 GOTO 441
0824 REM % SCAN @XNODES
0825 DEFFN'30(M0$)
: U4=0
: DBACKSPACE #U2,BEG
0830 DATA LOAD DC #U2,M1$()
: IF END THEN RETURN
0850 MAT SEARCH M1$(),=STR(M0$,,9) TO U5$ STEP 33
: IF STR(U5$,,2)=HEX(0000) THEN 830
0855 U4=(32+VAL(U5$,2))/33
: RETURN
0890 REM % UPDATE STACK ENTRY
: $UNPACK (F=U1$) M$(M) TO U$,R$,U4,U4$,Q,M0$
: $PACK (F=U1$) M$(M) FROM U$,R$,U4,U4$,Q,U5$
: RETURN
0900 DEFFN'29"LISTSD 9000,";HEX(0D)
0905 DEFFN'24
: PRINT "Saving node data"
: RESTORE LINE 8100
: READ U$
: SAVE T#U2,(5)U$ 9000,
: ERRORSCRATCH T#U2,U$
: SAVE T#U2,()U$ 9000,
0910 RETURN
0915 REM %GET NEXT NODE ITEM (excluding blank lines)
0920 READ U$,U1$,U2$
: IF U1=3THEN 925
: FOR U4=4 TO U1
: READ R$
: NEXT U4
0925 IF POS("MP "=STR(U2$,,1))=0THEN 920
: R=R+1
: RETURN
0930 REM %GET NEXT NODE ITEM (including blank lines)
0935 READ U$,U1$,U2$
: IF U1=3THEN 940
: FOR U4=4 TO U1
: READ R$
: NEXT U4
0940 R2=R2+1
: IF POS("MPB "=STR(U2$,,1))=0THEN 935
: R=R+1
: RETURN
0945 REM %CHECK FOR PASSWORD
: REM RETURN -- U4$=" " iff password ok or none
: REM
: IF U4$=" " THEN RETURN
0950 PRINT AT(4,0,79);AT(3,0,48);AT(2,0,40);HEX(0E05);"Enter password ";
: FOR U4=1 TO LEN(U4$)
: KEYIN U6$
: STR(U4$,U4,1)=XOR U6$
: PRINT W$;
: NEXT U4
: $TRAN(U4$,HEX(2000))R
: RETURN
0955 REM %DISK SELECT
: REM Entry-- N$=file# (" " ==> #0), A$=device-addr (" " ==> no selection)
: REM Return-- N=file# (selected)
0960 U2=0
: IF U3$<>" " THEN CONVERT U3$ TO U2
: ERRORGOTO 975
0965 IF U2<0 OR U2>15 THEN 975
: IF U5$<>" " THEN SELECT #U2<U5$>
: ERRORGOTO 975
0970 RETURN
0975 PRINT "Error in selecting";U2;" ";U5$
: END
0980 REM %DISPLAY CURRENT ENTRY (W) WITHOUT HIGHLIGHT
: PRINT AT(VAL(W$(W,1)),VAL(W$(W,2)));". ";U8$;
: RETURN
0985 REM % RETURNS R$="T" IF A BACKGROUND IS PARTITION WAITING
7000 REM % $FORMAT OF MENU STACK
7010 $FORMAT U1$=A8,A1,P2.2,A8,P2,A12
: RETURN
7450 LOAD T#0,"START"
: ERRORGOTO 7550
7500 REM % START or ! GENERATED BY MENU PACKAGE
7505 $PSTAT=" "
7510 DATA LOAD DC OPEN T#0,"APPSAVE"
: ERROR$PSTAT=" "
: LOAD T#0,"@MENU"
7520 DATA LOAD DC #0,U5$
7530 SELECT #1 <U5$>
: LIMITS T#1,"@MENU",U4,U4,U4,Q
: ERRORGOTO 7550
7540 IF Q<>1 THEN 7550
: SELECT #0 <U5$>
: LOAD T#0,"@MENU"
7550 PRINT AT(22,0,);HEX(02040B000F0E);"Unable to find disk or file containing
next menu."
7560 LINPUT "DISK ADDRESS?",U5$
: IF POS("3BD"=STR(U5$,,1))=0 OR VER(U5$,"HHH")<>3 THEN 7560
7570 DATA LOAD DC OPEN T#0,"APPSAVE"
: ERRORGOTO 7530
7580 DATA SAVE DC #0,U5$
: ERRORGOTO 7530
7585 GOTO 7530
8000 REM %NODE DATA (lines 9000-)
8010 REM 1st line of data is the NODE DESCRIPTION --
: REM
: REM DATA "node filename" (required)
: REM "node title" (required)
: REM "# items in each ITEM DESCRIPTION" (required)
8020 REM "# other items in NODE DESCRIPTION" (required)
: REM "previous node name" (optional)
: REM "[file#][,device-address]" (optional,see below)
8030 REM other alpha items (optional)
: REM
8040 REM Each other line of data is an ITEM DESCRIPTION --
: REM
: REM DATA "item name (ie, filename)" (required)
: REM "item description (displayed information)" (required)
8050 REM "type" (required)
: REM P=program
: REM M=menu node
: REM B=blank display line
: REM O=overlay or related file (not used by @MENU)
: REM (must follow an item of type P or O)
8060 REM other alpha items (optional)
: REM
8070 REM Types P & M can optionally be followed by, separated by commas,
: REM
: REM required partition size (SPACEK)
: REM execution password (8 bytes)
8080 REM file# to load from (default #0)
: REM device-addr (file# selected to this, same disk as menu node)
: REM
: REM Eg, "P,14,password,1,B10"
: REM "M,,,,D32"
: REM
8090 REM Last line of data defines the end of items --
: REM
: REM DATA "no more","end of node"," "
8100 REM