Home » CEEFAX disks » telesoftware17.adl » 30-07-89/MazeTxt
30-07-89/MazeTxt
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
| Tape/disk: | Home » CEEFAX disks » telesoftware17.adl |
| Filename: | 30-07-89/MazeTxt |
| Read OK: | ✔ |
| File size: | 0C10 bytes |
| Load address: | 0000 |
| Exec address: | FFFFFFFF |
Duplicates
There is 1 duplicate copy of this file in the archive:
- CEEFAX disks » telesoftware11.adl » 16-12-88/MAZETXT
- CEEFAX disks » telesoftware17.adl » 30-07-89/MazeTxt
File contents
The program constructs mazes that can be displayed on the screen or sent to an epson compatible printer. The principal feature, apart from the ability to print mazes, is the sheer size of the mazes. They can be over 130x130 cells, and even a 'slow' full size maze will be constructed in less that 10 minutes. Quick mazes take about half the time but tend to have quite large areas of plain background. All versions of BASIC are catered for. The program makes direct access to the screen and is therefore NOT compatible with second processors and some shadow ram systems. Due to the memory limitations of the machine it has been necessary to produce a rather compacted program. This will adjust itself to the memory space available. The result is that the Master can usually generate considerably larger mazes than the BBC The program is menu driven and alows you to ESCAPE to the menu from any operation without corrupting a resident maze. However the printer will not take kindly to being interupted and will have to be re-initialised if further printing is required. There are editing controls to allow additions to be made, or even an entire maze to be constructed by hand. Details are given by the 'Prompt' option. The start of the maze is marked by a small 'o' on the printed copy and 'S' on screen. Printing is for the EPSON FX80. It should be noted that the maximum maze width for this printer is 120 cells. The maze can be 'Played' on screen as a game. This is very difficult as the largest maze size is around 15500 cells and you can only see 805 at a time. Occasionally the program will produce a ridiculously simple maze, or even no maze at all. This is not a bug but a logical situation that is bound to occur some times due to the random distance and direction checks whilst building mazes. I have tried to make the program as easy to use as possible whilst retaining reasonable error trapping. I have also enabled the use of star commands, although obviously *BACKUP etc. would be fatal! The assembly routine in PROCinitialise is neccessary for speed. .move is used to move the maze around on the screen. .wipe clears out all the array space used by the maze. The various procedures describe themselves fairly well, however below is a list of the major variables and their functions. R% defines the start address of the maze array G% and H% are arrays used in the construction of the maze and contain the X and Y co-ordinates of the maze path Q% is the address of the indirection string pointed to by X% and Y% for the OSCLII calls. K% maze width L% maze depth V% screen cursor X position W% screen cursor Y position E% maze cursor position ?E% character at cursor position M% screen/maze top left corner Z% valid maze flag !(R%-8) valid file test ?(R%-4) and ?(R%-3) stored values of maze size ?(R%-2) and ?(R%-1) stored values of maze 'start' Some of these variable descriptions apply strictly to PROCview. They are re-used in other routines. For example, M% is used in the construction procedures to mark the current path length of the maze.
00000000 54 68 65 20 70 72 6f 67 72 61 6d 20 63 6f 6e 73 |The program cons| 00000010 74 72 75 63 74 73 20 6d 61 7a 65 73 20 74 68 61 |tructs mazes tha| 00000020 74 20 63 61 6e 20 62 65 20 64 69 73 70 6c 61 79 |t can be display| 00000030 65 64 20 6f 6e 20 74 68 65 20 73 63 72 65 65 6e |ed on the screen| 00000040 20 6f 72 20 73 65 6e 74 0d 74 6f 20 61 6e 20 65 | or sent.to an e| 00000050 70 73 6f 6e 20 63 6f 6d 70 61 74 69 62 6c 65 20 |pson compatible | 00000060 70 72 69 6e 74 65 72 2e 20 54 68 65 20 70 72 69 |printer. The pri| 00000070 6e 63 69 70 61 6c 20 66 65 61 74 75 72 65 2c 20 |ncipal feature, | 00000080 61 70 61 72 74 20 66 72 6f 6d 20 74 68 65 0d 61 |apart from the.a| 00000090 62 69 6c 69 74 79 20 74 6f 20 70 72 69 6e 74 20 |bility to print | 000000a0 6d 61 7a 65 73 2c 20 69 73 20 74 68 65 20 73 68 |mazes, is the sh| 000000b0 65 65 72 20 73 69 7a 65 20 6f 66 20 74 68 65 20 |eer size of the | 000000c0 6d 61 7a 65 73 2e 20 54 68 65 79 20 63 61 6e 20 |mazes. They can | 000000d0 62 65 20 6f 76 65 72 0d 31 33 30 78 31 33 30 20 |be over.130x130 | 000000e0 63 65 6c 6c 73 2c 20 61 6e 64 20 65 76 65 6e 20 |cells, and even | 000000f0 61 20 27 73 6c 6f 77 27 20 66 75 6c 6c 20 73 69 |a 'slow' full si| 00000100 7a 65 20 6d 61 7a 65 20 77 69 6c 6c 20 62 65 20 |ze maze will be | 00000110 63 6f 6e 73 74 72 75 63 74 65 64 20 69 6e 0d 6c |constructed in.l| 00000120 65 73 73 20 74 68 61 74 20 31 30 20 6d 69 6e 75 |ess that 10 minu| 00000130 74 65 73 2e 20 51 75 69 63 6b 20 6d 61 7a 65 73 |tes. Quick mazes| 00000140 20 74 61 6b 65 20 61 62 6f 75 74 20 68 61 6c 66 | take about half| 00000150 20 74 68 65 20 74 69 6d 65 20 62 75 74 20 74 65 | the time but te| 00000160 6e 64 20 74 6f 0d 68 61 76 65 20 71 75 69 74 65 |nd to.have quite| 00000170 20 6c 61 72 67 65 20 61 72 65 61 73 20 6f 66 20 | large areas of | 00000180 70 6c 61 69 6e 20 62 61 63 6b 67 72 6f 75 6e 64 |plain background| 00000190 2e 0d 0d 41 6c 6c 20 76 65 72 73 69 6f 6e 73 20 |...All versions | 000001a0 6f 66 20 42 41 53 49 43 20 61 72 65 20 63 61 74 |of BASIC are cat| 000001b0 65 72 65 64 20 66 6f 72 2e 0d 0d 54 68 65 20 70 |ered for...The p| 000001c0 72 6f 67 72 61 6d 20 6d 61 6b 65 73 20 64 69 72 |rogram makes dir| 000001d0 65 63 74 20 61 63 63 65 73 73 20 74 6f 20 74 68 |ect access to th| 000001e0 65 20 73 63 72 65 65 6e 20 61 6e 64 20 69 73 20 |e screen and is | 000001f0 74 68 65 72 65 66 6f 72 65 20 4e 4f 54 0d 63 6f |therefore NOT.co| 00000200 6d 70 61 74 69 62 6c 65 20 77 69 74 68 20 73 65 |mpatible with se| 00000210 63 6f 6e 64 20 70 72 6f 63 65 73 73 6f 72 73 20 |cond processors | 00000220 61 6e 64 20 73 6f 6d 65 20 73 68 61 64 6f 77 20 |and some shadow | 00000230 72 61 6d 20 73 79 73 74 65 6d 73 2e 0d 0d 44 75 |ram systems...Du| 00000240 65 20 74 6f 20 74 68 65 20 6d 65 6d 6f 72 79 20 |e to the memory | 00000250 6c 69 6d 69 74 61 74 69 6f 6e 73 20 6f 66 20 74 |limitations of t| 00000260 68 65 20 6d 61 63 68 69 6e 65 20 69 74 20 68 61 |he machine it ha| 00000270 73 20 62 65 65 6e 20 6e 65 63 65 73 73 61 72 79 |s been necessary| 00000280 20 74 6f 0d 70 72 6f 64 75 63 65 20 61 20 72 61 | to.produce a ra| 00000290 74 68 65 72 20 63 6f 6d 70 61 63 74 65 64 20 70 |ther compacted p| 000002a0 72 6f 67 72 61 6d 2e 20 54 68 69 73 20 77 69 6c |rogram. This wil| 000002b0 6c 20 61 64 6a 75 73 74 20 69 74 73 65 6c 66 20 |l adjust itself | 000002c0 74 6f 20 74 68 65 20 6d 65 6d 6f 72 79 0d 73 70 |to the memory.sp| 000002d0 61 63 65 20 61 76 61 69 6c 61 62 6c 65 2e 20 54 |ace available. T| 000002e0 68 65 20 72 65 73 75 6c 74 20 69 73 20 74 68 61 |he result is tha| 000002f0 74 20 74 68 65 20 4d 61 73 74 65 72 20 63 61 6e |t the Master can| 00000300 20 75 73 75 61 6c 6c 79 20 67 65 6e 65 72 61 74 | usually generat| 00000310 65 0d 63 6f 6e 73 69 64 65 72 61 62 6c 79 20 6c |e.considerably l| 00000320 61 72 67 65 72 20 6d 61 7a 65 73 20 74 68 61 6e |arger mazes than| 00000330 20 74 68 65 20 42 42 43 0d 0d 54 68 65 20 70 72 | the BBC..The pr| 00000340 6f 67 72 61 6d 20 69 73 20 6d 65 6e 75 20 64 72 |ogram is menu dr| 00000350 69 76 65 6e 20 61 6e 64 20 61 6c 6f 77 73 20 79 |iven and alows y| 00000360 6f 75 20 74 6f 20 45 53 43 41 50 45 20 74 6f 20 |ou to ESCAPE to | 00000370 74 68 65 20 6d 65 6e 75 20 66 72 6f 6d 20 61 6e |the menu from an| 00000380 79 0d 6f 70 65 72 61 74 69 6f 6e 20 77 69 74 68 |y.operation with| 00000390 6f 75 74 20 63 6f 72 72 75 70 74 69 6e 67 20 61 |out corrupting a| 000003a0 20 72 65 73 69 64 65 6e 74 20 6d 61 7a 65 2e 20 | resident maze. | 000003b0 48 6f 77 65 76 65 72 20 74 68 65 20 70 72 69 6e |However the prin| 000003c0 74 65 72 20 77 69 6c 6c 20 6e 6f 74 0d 74 61 6b |ter will not.tak| 000003d0 65 20 6b 69 6e 64 6c 79 20 74 6f 20 62 65 69 6e |e kindly to bein| 000003e0 67 20 69 6e 74 65 72 75 70 74 65 64 20 61 6e 64 |g interupted and| 000003f0 20 77 69 6c 6c 20 68 61 76 65 20 74 6f 20 62 65 | will have to be| 00000400 20 72 65 2d 69 6e 69 74 69 61 6c 69 73 65 64 20 | re-initialised | 00000410 69 66 0d 66 75 72 74 68 65 72 20 70 72 69 6e 74 |if.further print| 00000420 69 6e 67 20 69 73 20 72 65 71 75 69 72 65 64 2e |ing is required.| 00000430 0d 0d 54 68 65 72 65 20 61 72 65 20 65 64 69 74 |..There are edit| 00000440 69 6e 67 20 63 6f 6e 74 72 6f 6c 73 20 74 6f 20 |ing controls to | 00000450 61 6c 6c 6f 77 20 61 64 64 69 74 69 6f 6e 73 20 |allow additions | 00000460 74 6f 20 62 65 20 6d 61 64 65 2c 20 6f 72 20 65 |to be made, or e| 00000470 76 65 6e 20 61 6e 0d 65 6e 74 69 72 65 20 6d 61 |ven an.entire ma| 00000480 7a 65 20 74 6f 20 62 65 20 63 6f 6e 73 74 72 75 |ze to be constru| 00000490 63 74 65 64 20 62 79 20 68 61 6e 64 2e 20 44 65 |cted by hand. De| 000004a0 74 61 69 6c 73 20 61 72 65 20 67 69 76 65 6e 20 |tails are given | 000004b0 62 79 20 74 68 65 20 27 50 72 6f 6d 70 74 27 0d |by the 'Prompt'.| 000004c0 6f 70 74 69 6f 6e 2e 0d 0d 54 68 65 20 73 74 61 |option...The sta| 000004d0 72 74 20 6f 66 20 74 68 65 20 6d 61 7a 65 20 69 |rt of the maze i| 000004e0 73 20 6d 61 72 6b 65 64 20 62 79 20 61 20 73 6d |s marked by a sm| 000004f0 61 6c 6c 20 27 6f 27 20 6f 6e 20 74 68 65 20 70 |all 'o' on the p| 00000500 72 69 6e 74 65 64 20 63 6f 70 79 20 61 6e 64 20 |rinted copy and | 00000510 27 53 27 0d 6f 6e 20 73 63 72 65 65 6e 2e 20 50 |'S'.on screen. P| 00000520 72 69 6e 74 69 6e 67 20 69 73 20 66 6f 72 20 74 |rinting is for t| 00000530 68 65 20 45 50 53 4f 4e 20 46 58 38 30 2e 20 49 |he EPSON FX80. I| 00000540 74 20 73 68 6f 75 6c 64 20 62 65 20 6e 6f 74 65 |t should be note| 00000550 64 20 74 68 61 74 20 74 68 65 0d 6d 61 78 69 6d |d that the.maxim| 00000560 75 6d 20 6d 61 7a 65 20 77 69 64 74 68 20 66 6f |um maze width fo| 00000570 72 20 74 68 69 73 20 70 72 69 6e 74 65 72 20 69 |r this printer i| 00000580 73 20 31 32 30 20 63 65 6c 6c 73 2e 0d 0d 54 68 |s 120 cells...Th| 00000590 65 20 6d 61 7a 65 20 63 61 6e 20 62 65 20 27 50 |e maze can be 'P| 000005a0 6c 61 79 65 64 27 20 6f 6e 20 73 63 72 65 65 6e |layed' on screen| 000005b0 20 61 73 20 61 20 67 61 6d 65 2e 20 54 68 69 73 | as a game. This| 000005c0 20 69 73 20 76 65 72 79 20 64 69 66 66 69 63 75 | is very difficu| 000005d0 6c 74 20 61 73 0d 74 68 65 20 6c 61 72 67 65 73 |lt as.the larges| 000005e0 74 20 6d 61 7a 65 20 73 69 7a 65 20 69 73 20 61 |t maze size is a| 000005f0 72 6f 75 6e 64 20 31 35 35 30 30 20 63 65 6c 6c |round 15500 cell| 00000600 73 20 61 6e 64 20 79 6f 75 20 63 61 6e 20 6f 6e |s and you can on| 00000610 6c 79 20 73 65 65 20 38 30 35 20 61 74 20 61 0d |ly see 805 at a.| 00000620 74 69 6d 65 2e 0d 0d 4f 63 63 61 73 69 6f 6e 61 |time...Occasiona| 00000630 6c 6c 79 20 74 68 65 20 70 72 6f 67 72 61 6d 20 |lly the program | 00000640 77 69 6c 6c 20 70 72 6f 64 75 63 65 20 61 20 72 |will produce a r| 00000650 69 64 69 63 75 6c 6f 75 73 6c 79 20 73 69 6d 70 |idiculously simp| 00000660 6c 65 20 6d 61 7a 65 2c 20 6f 72 20 65 76 65 6e |le maze, or even| 00000670 0d 6e 6f 20 6d 61 7a 65 20 61 74 20 61 6c 6c 2e |.no maze at all.| 00000680 20 54 68 69 73 20 69 73 20 6e 6f 74 20 61 20 62 | This is not a b| 00000690 75 67 20 62 75 74 20 61 20 6c 6f 67 69 63 61 6c |ug but a logical| 000006a0 20 73 69 74 75 61 74 69 6f 6e 20 74 68 61 74 20 | situation that | 000006b0 69 73 20 62 6f 75 6e 64 20 74 6f 0d 6f 63 63 75 |is bound to.occu| 000006c0 72 20 73 6f 6d 65 20 74 69 6d 65 73 20 64 75 65 |r some times due| 000006d0 20 74 6f 20 74 68 65 20 72 61 6e 64 6f 6d 20 64 | to the random d| 000006e0 69 73 74 61 6e 63 65 20 61 6e 64 20 64 69 72 65 |istance and dire| 000006f0 63 74 69 6f 6e 20 63 68 65 63 6b 73 20 77 68 69 |ction checks whi| 00000700 6c 73 74 0d 62 75 69 6c 64 69 6e 67 20 6d 61 7a |lst.building maz| 00000710 65 73 2e 0d 0d 49 20 68 61 76 65 20 74 72 69 65 |es...I have trie| 00000720 64 20 74 6f 20 6d 61 6b 65 20 74 68 65 20 70 72 |d to make the pr| 00000730 6f 67 72 61 6d 20 61 73 20 65 61 73 79 20 74 6f |ogram as easy to| 00000740 20 75 73 65 20 61 73 20 70 6f 73 73 69 62 6c 65 | use as possible| 00000750 20 77 68 69 6c 73 74 0d 72 65 74 61 69 6e 69 6e | whilst.retainin| 00000760 67 20 72 65 61 73 6f 6e 61 62 6c 65 20 65 72 72 |g reasonable err| 00000770 6f 72 20 74 72 61 70 70 69 6e 67 2e 20 49 20 68 |or trapping. I h| 00000780 61 76 65 20 61 6c 73 6f 20 65 6e 61 62 6c 65 64 |ave also enabled| 00000790 20 74 68 65 20 75 73 65 20 6f 66 20 73 74 61 72 | the use of star| 000007a0 0d 63 6f 6d 6d 61 6e 64 73 2c 20 61 6c 74 68 6f |.commands, altho| 000007b0 75 67 68 20 6f 62 76 69 6f 75 73 6c 79 20 2a 42 |ugh obviously *B| 000007c0 41 43 4b 55 50 20 65 74 63 2e 20 77 6f 75 6c 64 |ACKUP etc. would| 000007d0 20 62 65 20 66 61 74 61 6c 21 0d 0d 54 68 65 20 | be fatal!..The | 000007e0 61 73 73 65 6d 62 6c 79 20 72 6f 75 74 69 6e 65 |assembly routine| 000007f0 20 69 6e 20 50 52 4f 43 69 6e 69 74 69 61 6c 69 | in PROCinitiali| 00000800 73 65 20 69 73 20 6e 65 63 63 65 73 73 61 72 79 |se is neccessary| 00000810 20 66 6f 72 20 73 70 65 65 64 2e 0d 0d 2e 6d 6f | for speed....mo| 00000820 76 65 20 69 73 20 75 73 65 64 20 74 6f 20 6d 6f |ve is used to mo| 00000830 76 65 20 74 68 65 20 6d 61 7a 65 20 61 72 6f 75 |ve the maze arou| 00000840 6e 64 20 6f 6e 20 74 68 65 20 73 63 72 65 65 6e |nd on the screen| 00000850 2e 0d 0d 2e 77 69 70 65 20 63 6c 65 61 72 73 20 |....wipe clears | 00000860 6f 75 74 20 61 6c 6c 20 74 68 65 20 61 72 72 61 |out all the arra| 00000870 79 20 73 70 61 63 65 20 75 73 65 64 20 62 79 20 |y space used by | 00000880 74 68 65 20 6d 61 7a 65 2e 0d 0d 54 68 65 20 76 |the maze...The v| 00000890 61 72 69 6f 75 73 20 70 72 6f 63 65 64 75 72 65 |arious procedure| 000008a0 73 20 64 65 73 63 72 69 62 65 20 74 68 65 6d 73 |s describe thems| 000008b0 65 6c 76 65 73 20 66 61 69 72 6c 79 20 77 65 6c |elves fairly wel| 000008c0 6c 2c 20 68 6f 77 65 76 65 72 20 62 65 6c 6f 77 |l, however below| 000008d0 20 69 73 20 61 0d 6c 69 73 74 20 6f 66 20 74 68 | is a.list of th| 000008e0 65 20 6d 61 6a 6f 72 20 76 61 72 69 61 62 6c 65 |e major variable| 000008f0 73 20 61 6e 64 20 74 68 65 69 72 20 66 75 6e 63 |s and their func| 00000900 74 69 6f 6e 73 2e 0d 0d 52 25 20 64 65 66 69 6e |tions...R% defin| 00000910 65 73 20 74 68 65 20 73 74 61 72 74 20 61 64 64 |es the start add| 00000920 72 65 73 73 20 6f 66 20 74 68 65 20 6d 61 7a 65 |ress of the maze| 00000930 20 61 72 72 61 79 0d 0d 47 25 20 61 6e 64 20 48 | array..G% and H| 00000940 25 20 61 72 65 20 61 72 72 61 79 73 20 75 73 65 |% are arrays use| 00000950 64 20 69 6e 20 74 68 65 20 63 6f 6e 73 74 72 75 |d in the constru| 00000960 63 74 69 6f 6e 20 6f 66 20 74 68 65 20 6d 61 7a |ction of the maz| 00000970 65 20 61 6e 64 20 63 6f 6e 74 61 69 6e 20 74 68 |e and contain th| 00000980 65 0d 58 20 61 6e 64 20 59 20 63 6f 2d 6f 72 64 |e.X and Y co-ord| 00000990 69 6e 61 74 65 73 20 6f 66 20 74 68 65 20 6d 61 |inates of the ma| 000009a0 7a 65 20 70 61 74 68 0d 0d 51 25 20 69 73 20 74 |ze path..Q% is t| 000009b0 68 65 20 61 64 64 72 65 73 73 20 6f 66 20 74 68 |he address of th| 000009c0 65 20 69 6e 64 69 72 65 63 74 69 6f 6e 20 73 74 |e indirection st| 000009d0 72 69 6e 67 20 70 6f 69 6e 74 65 64 20 74 6f 20 |ring pointed to | 000009e0 62 79 20 58 25 20 61 6e 64 20 59 25 20 66 6f 72 |by X% and Y% for| 000009f0 0d 74 68 65 20 4f 53 43 4c 49 49 20 63 61 6c 6c |.the OSCLII call| 00000a00 73 2e 20 0d 0d 4b 25 20 6d 61 7a 65 20 77 69 64 |s. ..K% maze wid| 00000a10 74 68 0d 0d 4c 25 20 6d 61 7a 65 20 64 65 70 74 |th..L% maze dept| 00000a20 68 0d 0d 56 25 20 73 63 72 65 65 6e 20 63 75 72 |h..V% screen cur| 00000a30 73 6f 72 20 58 20 70 6f 73 69 74 69 6f 6e 0d 0d |sor X position..| 00000a40 57 25 20 73 63 72 65 65 6e 20 63 75 72 73 6f 72 |W% screen cursor| 00000a50 20 59 20 70 6f 73 69 74 69 6f 6e 0d 0d 45 25 20 | Y position..E% | 00000a60 6d 61 7a 65 20 63 75 72 73 6f 72 20 70 6f 73 69 |maze cursor posi| 00000a70 74 69 6f 6e 0d 0d 3f 45 25 20 63 68 61 72 61 63 |tion..?E% charac| 00000a80 74 65 72 20 61 74 20 63 75 72 73 6f 72 20 70 6f |ter at cursor po| 00000a90 73 69 74 69 6f 6e 0d 0d 4d 25 20 73 63 72 65 65 |sition..M% scree| 00000aa0 6e 2f 6d 61 7a 65 20 74 6f 70 20 6c 65 66 74 20 |n/maze top left | 00000ab0 63 6f 72 6e 65 72 0d 0d 5a 25 20 76 61 6c 69 64 |corner..Z% valid| 00000ac0 20 6d 61 7a 65 20 66 6c 61 67 0d 0d 21 28 52 25 | maze flag..!(R%| 00000ad0 2d 38 29 20 76 61 6c 69 64 20 66 69 6c 65 20 74 |-8) valid file t| 00000ae0 65 73 74 0d 0d 3f 28 52 25 2d 34 29 20 61 6e 64 |est..?(R%-4) and| 00000af0 20 3f 28 52 25 2d 33 29 20 73 74 6f 72 65 64 20 | ?(R%-3) stored | 00000b00 76 61 6c 75 65 73 20 6f 66 20 6d 61 7a 65 20 73 |values of maze s| 00000b10 69 7a 65 0d 0d 3f 28 52 25 2d 32 29 20 61 6e 64 |ize..?(R%-2) and| 00000b20 20 3f 28 52 25 2d 31 29 20 73 74 6f 72 65 64 20 | ?(R%-1) stored | 00000b30 76 61 6c 75 65 73 20 6f 66 20 6d 61 7a 65 20 27 |values of maze '| 00000b40 73 74 61 72 74 27 0d 0d 53 6f 6d 65 20 6f 66 20 |start'..Some of | 00000b50 74 68 65 73 65 20 76 61 72 69 61 62 6c 65 20 64 |these variable d| 00000b60 65 73 63 72 69 70 74 69 6f 6e 73 20 61 70 70 6c |escriptions appl| 00000b70 79 20 73 74 72 69 63 74 6c 79 20 74 6f 20 50 52 |y strictly to PR| 00000b80 4f 43 76 69 65 77 2e 20 54 68 65 79 20 61 72 65 |OCview. They are| 00000b90 0d 72 65 2d 75 73 65 64 20 69 6e 20 6f 74 68 65 |.re-used in othe| 00000ba0 72 20 72 6f 75 74 69 6e 65 73 2e 20 46 6f 72 20 |r routines. For | 00000bb0 65 78 61 6d 70 6c 65 2c 20 4d 25 20 69 73 20 75 |example, M% is u| 00000bc0 73 65 64 20 69 6e 20 74 68 65 20 63 6f 6e 73 74 |sed in the const| 00000bd0 72 75 63 74 69 6f 6e 0d 70 72 6f 63 65 64 75 72 |ruction.procedur| 00000be0 65 73 20 74 6f 20 6d 61 72 6b 20 74 68 65 20 63 |es to mark the c| 00000bf0 75 72 72 65 6e 74 20 70 61 74 68 20 6c 65 6e 67 |urrent path leng| 00000c00 74 68 20 6f 66 20 74 68 65 20 6d 61 7a 65 2e 0d |th of the maze..| 00000c10
30-07-89/MazeTxt.m0
30-07-89/MazeTxt.m1
30-07-89/MazeTxt.m2
30-07-89/MazeTxt.m4
30-07-89/MazeTxt.m5
.