Listing of file='@MENU' on disk='vmedia/701-2118N.wvd.zip'
# Sector 911, program filename = '@MENU' 0010 REM %@MENU -- SOFTWARE MENU : REM 12/31/79 REV 05/13/81 : REM 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 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........ : DIM U$8,U1$68,U8$68,U2$30,U6$1,W$(95,3)1,U(5),R$10,W$1,U4$8,U9$1 0070 REM Display : REM W$=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 0100 REM %GET NEXT NODE ............. : REM Entry- $PSTAT=node name (if " ", node name loaded from .STARTD) 0110 REM %ROOT NODE : U$=$PSTAT(#PART) : $PSTAT=" " : IF U$<>" "THEN 120 0115 DATA LOAD DC OPEN T#U2,".STARTD" : DATA LOAD DC #U2,U$ 0120 REM %GET NEXT NODE : LOAD T#U2,U$ 9000,9999 BEG 140 : ERRORREM 0130 SELECT P9 : PRINT HEX(07000404000E);"File not found";HEX(0D0D) 0140 REM NODE DESCRIPTORS : RESTORE LINE 8100 : READ U$,U1$,U1,U 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$="*" 0165 REM %DETERMINE DISPLAY COORDINATES OF NODE ITEMS........ 0170 REM %# NODE ITEMS : R=-1 : RESTORE LINE 8100,5+U 0180 GOSUB 560 : IF U$<>"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 560 : IF MOD(R,R9)=0 THEN W1=W1+1 : U(W1)=MAX(U(W1),LEN(U1$)+2) : NEXT W 0210 REM %CALC. DISPLAY COORDS : R0=INT((R5-5-R9)/2)+5 : W0,U3=INT((W5-U(1)-U(2)-U(3)-U(4)-U(5))/(W1+1)) : IF U3<5 THEN STOP "Screen too small -- reduce length or no. of items. " : W8=0 : RESTORE LINE 8100,5+U : R2=-1 0220 FOR W=1 TO W9 : R1=MOD(W-1,R9) : W1=INT((W-1)/R9) : IF R1=0 AND W1>0 THEN W0=W0+U(W1)+U3 : GOSUB 560 : IF STR(U2$,,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$,U1,U : SELECT PRINT 005(W5),P : PRINT HEX(030D0C030F06);AT(0,(W5-LEN(U1$))/2);HEX(0E);U1$;HEX(0F) : PRINT 0290 REM %DISPLAY INSTRUCTIONS : PRINT AT(2,0);"Select item with SPACE & BACKSPACE." 0292 IF W5 = 80 THEN 295 : PRINT AT(3,0);"Key RUN to execute, CLEAR for previous screen." : GOTO 298 0295 PRINT AT(3,0);"Key RUN to execute, CLEAR or PREV SCRN for previous screen ." 0298 PRINT AT(2,W5-22);"Partition";#PART;HEX(08);",";SPACEK;"K" : PRINT AT(3,W5-15);"Terminal";#TERM 0300 REM %DISPLAY NODE : RESTORE LINE 8100,5+U : FOR W=1 TO W8 : GOSUB 530 : U8$=U1$ : GOSUB 650 : NEXT W : W=1 0310 REM %PROCESS USER REQUESTS........ 0320 REM %DISPLAY CURRENT ENTRY HIGHLIT : RESTORE LINE 8100,5+U+U1*VAL(W$(W,3)) : GOSUB 530 : U8$=U1$ : PRINT HEX(0E);AT(VAL(W$(W,1)),VAL(W$(W,2)));W$;" ";U8$;HEX(0F); 0330 REM %USER REQUEST : KEYIN U6$,,465 : ON POS(HEX(20088281)=U6$) GOTO 400,410,420,470 0340 REM %Starting character? : RESTORE LINE 8100,5+U : R=0 0350 GOSUB 530 : IF W<>R THEN 350 0360 GOSUB 530 : IF U$="no more" THEN 370 : U9$ = HEX(20) OR STR(U1$,,1) : IF STR(U1$,,1)<>U6$ AND U9$ <> U6$ THEN 360 : GOTO 390 0370 RESTORE LINE 8100,5+U : R=0 0380 GOSUB 530 : IF W=R THEN 330 : U9$ = HEX(20) OR STR(U1$,,1) : IF STR(U1$,,1)<>U6$ AND U9$ <> U6$ THEN 380 0390 GOSUB 650 : W=R : GOTO 320 0400 REM %SPACE key : GOSUB 650 : W=MOD(W,W8)+1 : GOTO 320 0410 REM %BACKSPACE key : GOSUB 650 : W=MOD(W-2,W8)+1 : GOTO 320 0420 REM %RUN key : RESTORE LINE 8100,5+U : R=0 0430 GOSUB 530 : IF W<>R THEN 430 0440 REM Device selection : U7$,U3$,U5$,U4$=" " : $UNPACK(D=HEX(012C)) U2$ TO R$,U7$,U4$,U3$,U5$ : GOSUB 610 0450 REM Check for password : GOSUB 580 : IF U4$<>" " THEN 240 0452 REM Check SPACEK : IF U7$=" " THEN 460 : CONVERT U7$ TO U4 : ERRORPRINT "Error in spacek." : END 0454 IF U4<=SPACEK THEN 460 : SELECT P9 : PRINT HEX(0E);AT(2,0,40);"Insufficient memory.";AT(3,0,48);U4;"K partitio n required.";HEX(0D0D) : GOTO 240 0460 PRINT AT(3,0,59);AT(2,0,40);HEX(0E05);"Loading ";BOX(1,LEN(U$)+1);" ";U$; " ";HEX(0F); : IF STR(U2$,,1)<>"P" THEN 120 : RESTORE LINE 8100 : READ R$ : $PSTAT=R$ : LOAD T#U2,U$ : ERRORGOTO 130 0465 REM %'31 (CLEAR) : IF U6$=HEX(42)OR U6$=HEX(52) THEN 700 : IF U6$=HEX(43)OR U6$=HEX(53) THEN 710 : IF U6$<>HEX(1F) THEN 330 0470 REM %CLEAR key : IF U=0 THEN 330 : RESTORE LINE 8100,5 : READ U$ : U2$="M" : R$=" " : IF U>=2 THEN READ R$ : $UNPACK(D=HEX(012C)) R$ TO U3$,U5$ : GOSUB 610 : GOTO 460 0480 REM %SUBROUTINES......... 0490 DEFFN' 0"LISTSD 9000,";HEX(0D) 0500 DEFFN'24 : PRINT "Saving node data" : RESTORE LINE 8100 : READ U$ : SAVE T$(5)U$9000, : ERRORSCRATCH T U$ : SAVE T$()U$ 9000, 0510 RETURN 0520 REM %GET NEXT NODE ITEM (excluding blank lines) 0530 READ U$,U1$,U2$ : IF U1=3THEN 540 : FOR U4=4 TO U1 : READ R$ : NEXT U4 0540 IF POS("MP "=STR(U2$,,1))=0THEN 530 : R=R+1 : RETURN 0550 REM %GET NEXT NODE ITEM (including blank lines) 0560 READ U$,U1$,U2$ : IF U1=3THEN 570 : FOR U4=4 TO U1 : READ R$ : NEXT U4 0570 R2=R2+1 : IF POS("MPB "=STR(U2$,,1))=0THEN 560 : R=R+1 : RETURN 0580 REM %CHECK FOR PASSWORD : REM RETURN -- U4$=" " iff password ok or none : REM : IF U4$=" " THEN RETURN 0590 PRINT AT(3,0,48);AT(2,0,40);HEX(0E05);"Enter password "; : FOR U4=1 TO LEN(U4$) : KEYIN U6$ : STR(U4$,U4,1)=XOR U6$ : PRINT W$; : NEXT U4 : $TRAN(U4$,HEX(2000))R : RETURN 0600 REM %DISK SELECT : REM Entry-- N$=file# (" " ==> #0), A$=device-addr (" " ==> no selection) : REM Return-- N=file# (selected) 0610 U2=0 : IF U3$<>" " THEN CONVERT U3$ TO U2 : ERRORGOTO 640 0620 IF U2<0 OR U2>15 THEN 640 : IF U5$<>" " THEN SELECT #U2<U5$> : ERRORGOTO 640 0630 RETURN 0640 PRINT "Error in selecting";U2;" ";U5$ : END 0650 REM %DISPLAY CURRENT ENTRY (W) WITHOUT HIGHLIGHT : PRINT AT(VAL(W$(W,1)),VAL(W$(W,2)));". ";U8$; : RETURN 0700 DEFFN'42 0705 DEFFN'52 : U6$=HEX(81) : GOTO 470 : RETURN 0710 DEFFN'43 0715 DEFFN'53 : U6$=HEX(82) : GOTO 420 : RETURN 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, default no selection) : 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