Home » CEEFAX disks » telesoftware2.adl » 26_09_87/L\INFO
26_09_87/L\INFO
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 » telesoftware2.adl |
| Filename: | 26_09_87/L\INFO |
| Read OK: | ✔ |
| File size: | 0996 bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
Logic Designer
For the BBC 'B' Microcomputer
By Darren Bird.
1.1 Program Description
This program allows logic circuits to be designed using
the main building blocks of digital systems to be implement a
specific function. Once designed the circuit can be saved to disk
(or tape) as a file, and at a later time re-loaded back into the
memory when required. The program also allows for a printer copy
to be produced, though the screen dump was designed to work on an
EPSON printer, it should also work on other compatible ones.
The program is menu driven and fairly easy to use. It is
quite possible to return to the menu page at any time when
designing a circuit without any loss to the present circuit in the
memory. To erase a circuit, it is necessary to either; load in
another circuit or press option 5 on the menu, which will erase
the current circuit.
1.2 Using the program
The program is menu driven and suitable prompts will be
given when required to specific commands. In the design section of
the program the position on the screen is indicated by a
cross-wire cursor configuration which allows for the correct
alignment of logic blocks on the screen. The position of the
cursor is controlled by the cursor keys. To position a gate on the
screen you must place the cursor at the required position on the
screen, this will represent the top-left hand corner of the gate
and then press the function key for the gate wanted. The list of
available gates is given at the bottom of the screen. If you want
to delete this block, place the cursor at the same position and
press the function key that that gate represents.
Wiring is acheived by pressing f7 - MOVE, to position the
starting point of the wire and then move the cursor to the next
position and press f8 - WIRE to generate a wire between these two
points. Deleting a wire is acheived by exactly the same method as
placing one in.
1.3 Gates Available
The following gates and blocks are available in the
program;
f0 f1 f2 f3 f4 f5 f6
OR NOR AND NAND INV EOR flip
00000000 0d 0d 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |.. | 00000010 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000020 20 4c 6f 67 69 63 20 44 65 73 69 67 6e 65 72 0d | Logic Designer.| 00000030 0d 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |. | 00000040 20 20 20 20 20 20 20 20 46 6f 72 20 74 68 65 20 | For the | 00000050 42 42 43 20 27 42 27 20 4d 69 63 72 6f 63 6f 6d |BBC 'B' Microcom| 00000060 70 75 74 65 72 0d 0d 20 20 20 20 20 20 20 20 20 |puter.. | 00000070 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000080 20 20 20 20 20 42 79 20 44 61 72 72 65 6e 20 42 | By Darren B| 00000090 69 72 64 2e 0d 0d 31 2e 31 20 50 72 6f 67 72 61 |ird...1.1 Progra| 000000a0 6d 20 44 65 73 63 72 69 70 74 69 6f 6e 0d 0d 20 |m Description.. | 000000b0 20 20 20 20 20 20 20 20 20 20 20 20 54 68 69 73 | This| 000000c0 20 70 72 6f 67 72 61 6d 20 20 61 6c 6c 6f 77 73 | program allows| 000000d0 20 6c 6f 67 69 63 20 20 63 69 72 63 75 69 74 73 | logic circuits| 000000e0 20 74 6f 20 62 65 20 20 64 65 73 69 67 6e 65 64 | to be designed| 000000f0 20 75 73 69 6e 67 0d 20 20 20 20 20 74 68 65 20 | using. the | 00000100 20 6d 61 69 6e 20 62 75 69 6c 64 69 6e 67 20 20 | main building | 00000110 62 6c 6f 63 6b 73 20 6f 66 20 20 64 69 67 69 74 |blocks of digit| 00000120 61 6c 20 73 79 73 74 65 6d 73 20 20 74 6f 20 62 |al systems to b| 00000130 65 20 20 69 6d 70 6c 65 6d 65 6e 74 20 61 0d 20 |e implement a. | 00000140 20 20 20 20 73 70 65 63 69 66 69 63 20 66 75 6e | specific fun| 00000150 63 74 69 6f 6e 2e 20 4f 6e 63 65 20 64 65 73 69 |ction. Once desi| 00000160 67 6e 65 64 20 74 68 65 20 20 63 69 72 63 75 69 |gned the circui| 00000170 74 20 63 61 6e 20 62 65 20 73 61 76 65 64 20 74 |t can be saved t| 00000180 6f 20 64 69 73 6b 0d 20 20 20 20 20 28 6f 72 20 |o disk. (or | 00000190 74 61 70 65 29 20 61 73 20 61 20 20 66 69 6c 65 |tape) as a file| 000001a0 2c 20 61 6e 64 20 61 74 20 61 20 6c 61 74 65 72 |, and at a later| 000001b0 20 74 69 6d 65 20 20 72 65 2d 6c 6f 61 64 65 64 | time re-loaded| 000001c0 20 62 61 63 6b 20 69 6e 74 6f 20 74 68 65 0d 20 | back into the. | 000001d0 20 20 20 20 6d 65 6d 6f 72 79 20 77 68 65 6e 20 | memory when | 000001e0 72 65 71 75 69 72 65 64 2e 20 20 54 68 65 20 70 |required. The p| 000001f0 72 6f 67 72 61 6d 20 61 6c 73 6f 20 61 6c 6c 6f |rogram also allo| 00000200 77 73 20 66 6f 72 20 20 61 20 70 72 69 6e 74 65 |ws for a printe| 00000210 72 20 63 6f 70 79 0d 20 20 20 20 20 74 6f 20 62 |r copy. to b| 00000220 65 20 70 72 6f 64 75 63 65 64 2c 20 74 68 6f 75 |e produced, thou| 00000230 67 68 20 74 68 65 20 73 63 72 65 65 6e 20 20 64 |gh the screen d| 00000240 75 6d 70 20 77 61 73 20 64 65 73 69 67 6e 65 64 |ump was designed| 00000250 20 74 6f 20 77 6f 72 6b 20 6f 6e 20 61 6e 0d 20 | to work on an. | 00000260 20 20 20 20 45 50 53 4f 4e 20 70 72 69 6e 74 65 | EPSON printe| 00000270 72 2c 20 69 74 20 73 68 6f 75 6c 64 20 61 6c 73 |r, it should als| 00000280 6f 20 77 6f 72 6b 20 6f 6e 20 6f 74 68 65 72 20 |o work on other | 00000290 63 6f 6d 70 61 74 69 62 6c 65 20 6f 6e 65 73 2e |compatible ones.| 000002a0 0d 0d 20 20 20 20 20 20 20 20 20 20 20 20 20 54 |.. T| 000002b0 68 65 20 70 72 6f 67 72 61 6d 20 69 73 20 20 6d |he program is m| 000002c0 65 6e 75 20 64 72 69 76 65 6e 20 61 6e 64 20 66 |enu driven and f| 000002d0 61 69 72 6c 79 20 65 61 73 79 20 74 6f 20 20 75 |airly easy to u| 000002e0 73 65 2e 20 49 74 20 69 73 0d 20 20 20 20 20 71 |se. It is. q| 000002f0 75 69 74 65 20 20 70 6f 73 73 69 62 6c 65 20 74 |uite possible t| 00000300 6f 20 20 72 65 74 75 72 6e 20 20 74 6f 20 20 74 |o return to t| 00000310 68 65 20 6d 65 6e 75 20 20 70 61 67 65 20 20 61 |he menu page a| 00000320 74 20 20 61 6e 79 20 74 69 6d 65 20 20 77 68 65 |t any time whe| 00000330 6e 0d 20 20 20 20 20 64 65 73 69 67 6e 69 6e 67 |n. designing| 00000340 20 61 20 63 69 72 63 75 69 74 20 77 69 74 68 6f | a circuit witho| 00000350 75 74 20 61 6e 79 20 6c 6f 73 73 20 74 6f 20 74 |ut any loss to t| 00000360 68 65 20 70 72 65 73 65 6e 74 20 63 69 72 63 75 |he present circu| 00000370 69 74 20 69 6e 20 74 68 65 0d 20 20 20 20 20 6d |it in the. m| 00000380 65 6d 6f 72 79 2e 20 54 6f 20 20 65 72 61 73 65 |emory. To erase| 00000390 20 61 20 63 69 72 63 75 69 74 2c 20 20 69 74 20 | a circuit, it | 000003a0 69 73 20 20 6e 65 63 65 73 73 61 72 79 20 74 6f |is necessary to| 000003b0 20 65 69 74 68 65 72 3b 20 20 6c 6f 61 64 20 69 | either; load i| 000003c0 6e 0d 20 20 20 20 20 61 6e 6f 74 68 65 72 20 63 |n. another c| 000003d0 69 72 63 75 69 74 20 20 6f 72 20 70 72 65 73 73 |ircuit or press| 000003e0 20 6f 70 74 69 6f 6e 20 35 20 20 6f 6e 20 74 68 | option 5 on th| 000003f0 65 20 6d 65 6e 75 2c 20 77 68 69 63 68 20 20 77 |e menu, which w| 00000400 69 6c 6c 20 65 72 61 73 65 0d 20 20 20 20 20 74 |ill erase. t| 00000410 68 65 20 63 75 72 72 65 6e 74 20 63 69 72 63 75 |he current circu| 00000420 69 74 2e 0d 0d 31 2e 32 20 55 73 69 6e 67 20 74 |it...1.2 Using t| 00000430 68 65 20 70 72 6f 67 72 61 6d 0d 0d 20 20 20 20 |he program.. | 00000440 20 20 20 20 20 20 20 20 20 54 68 65 20 70 72 6f | The pro| 00000450 67 72 61 6d 20 20 69 73 20 6d 65 6e 75 20 64 72 |gram is menu dr| 00000460 69 76 65 6e 20 20 61 6e 64 20 73 75 69 74 61 62 |iven and suitab| 00000470 6c 65 20 70 72 6f 6d 70 74 73 20 20 77 69 6c 6c |le prompts will| 00000480 20 62 65 0d 20 20 20 20 20 67 69 76 65 6e 20 77 | be. given w| 00000490 68 65 6e 20 72 65 71 75 69 72 65 64 20 74 6f 20 |hen required to | 000004a0 73 70 65 63 69 66 69 63 20 63 6f 6d 6d 61 6e 64 |specific command| 000004b0 73 2e 20 49 6e 20 74 68 65 20 64 65 73 69 67 6e |s. In the design| 000004c0 20 73 65 63 74 69 6f 6e 20 6f 66 0d 20 20 20 20 | section of. | 000004d0 20 74 68 65 20 20 70 72 6f 67 72 61 6d 20 20 74 | the program t| 000004e0 68 65 20 20 70 6f 73 69 74 69 6f 6e 20 20 6f 6e |he position on| 000004f0 20 20 74 68 65 20 20 73 63 72 65 65 6e 20 20 69 | the screen i| 00000500 73 20 20 69 6e 64 69 63 61 74 65 64 20 20 62 79 |s indicated by| 00000510 20 20 61 0d 20 20 20 20 20 63 72 6f 73 73 2d 77 | a. cross-w| 00000520 69 72 65 20 20 63 75 72 73 6f 72 20 20 63 6f 6e |ire cursor con| 00000530 66 69 67 75 72 61 74 69 6f 6e 20 20 77 68 69 63 |figuration whic| 00000540 68 20 61 6c 6c 6f 77 73 20 20 66 6f 72 20 20 74 |h allows for t| 00000550 68 65 20 20 63 6f 72 72 65 63 74 0d 20 20 20 20 |he correct. | 00000560 20 61 6c 69 67 6e 6d 65 6e 74 20 20 6f 66 20 6c | alignment of l| 00000570 6f 67 69 63 20 20 62 6c 6f 63 6b 73 20 6f 6e 20 |ogic blocks on | 00000580 20 74 68 65 20 20 73 63 72 65 65 6e 2e 20 54 68 | the screen. Th| 00000590 65 20 20 70 6f 73 69 74 69 6f 6e 20 6f 66 20 20 |e position of | 000005a0 74 68 65 0d 20 20 20 20 20 63 75 72 73 6f 72 20 |the. cursor | 000005b0 69 73 20 63 6f 6e 74 72 6f 6c 6c 65 64 20 62 79 |is controlled by| 000005c0 20 74 68 65 20 63 75 72 73 6f 72 20 6b 65 79 73 | the cursor keys| 000005d0 2e 20 54 6f 20 70 6f 73 69 74 69 6f 6e 20 61 20 |. To position a | 000005e0 67 61 74 65 20 6f 6e 20 74 68 65 0d 20 20 20 20 |gate on the. | 000005f0 20 73 63 72 65 65 6e 20 79 6f 75 20 6d 75 73 74 | screen you must| 00000600 20 20 70 6c 61 63 65 20 74 68 65 20 63 75 72 73 | place the curs| 00000610 6f 72 20 61 74 20 74 68 65 20 72 65 71 75 69 72 |or at the requir| 00000620 65 64 20 20 70 6f 73 69 74 69 6f 6e 20 6f 6e 20 |ed position on | 00000630 74 68 65 0d 20 20 20 20 20 73 63 72 65 65 6e 2c |the. screen,| 00000640 20 74 68 69 73 20 77 69 6c 6c 20 20 72 65 70 72 | this will repr| 00000650 65 73 65 6e 74 20 74 68 65 20 74 6f 70 2d 6c 65 |esent the top-le| 00000660 66 74 20 68 61 6e 64 20 63 6f 72 6e 65 72 20 20 |ft hand corner | 00000670 6f 66 20 74 68 65 20 67 61 74 65 0d 20 20 20 20 |of the gate. | 00000680 20 61 6e 64 20 74 68 65 6e 20 70 72 65 73 73 20 | and then press | 00000690 20 74 68 65 20 66 75 6e 63 74 69 6f 6e 20 6b 65 | the function ke| 000006a0 79 20 66 6f 72 20 74 68 65 20 67 61 74 65 20 20 |y for the gate | 000006b0 77 61 6e 74 65 64 2e 20 54 68 65 20 6c 69 73 74 |wanted. The list| 000006c0 20 6f 66 0d 20 20 20 20 20 61 76 61 69 6c 61 62 | of. availab| 000006d0 6c 65 20 67 61 74 65 73 20 69 73 20 67 69 76 65 |le gates is give| 000006e0 6e 20 61 74 20 74 68 65 20 20 62 6f 74 74 6f 6d |n at the bottom| 000006f0 20 6f 66 20 74 68 65 20 73 63 72 65 65 6e 2e 20 | of the screen. | 00000700 49 66 20 79 6f 75 20 77 61 6e 74 0d 20 20 20 20 |If you want. | 00000710 20 74 6f 20 64 65 6c 65 74 65 20 20 74 68 69 73 | to delete this| 00000720 20 62 6c 6f 63 6b 2c 20 70 6c 61 63 65 20 74 68 | block, place th| 00000730 65 20 20 63 75 72 73 6f 72 20 61 74 20 74 68 65 |e cursor at the| 00000740 20 73 61 6d 65 20 20 70 6f 73 69 74 69 6f 6e 20 | same position | 00000750 61 6e 64 0d 20 20 20 20 20 70 72 65 73 73 20 74 |and. press t| 00000760 68 65 20 66 75 6e 63 74 69 6f 6e 20 6b 65 79 20 |he function key | 00000770 74 68 61 74 20 74 68 61 74 20 67 61 74 65 20 72 |that that gate r| 00000780 65 70 72 65 73 65 6e 74 73 2e 0d 0d 20 20 20 20 |epresents... | 00000790 20 20 20 20 20 20 20 20 20 57 69 72 69 6e 67 20 | Wiring | 000007a0 69 73 20 61 63 68 65 69 76 65 64 20 62 79 20 70 |is acheived by p| 000007b0 72 65 73 73 69 6e 67 20 20 66 37 20 2d 20 4d 4f |ressing f7 - MO| 000007c0 56 45 2c 20 74 6f 20 70 6f 73 69 74 69 6f 6e 20 |VE, to position | 000007d0 74 68 65 0d 20 20 20 20 20 73 74 61 72 74 69 6e |the. startin| 000007e0 67 20 70 6f 69 6e 74 20 20 6f 66 20 74 68 65 20 |g point of the | 000007f0 77 69 72 65 20 61 6e 64 20 20 74 68 65 6e 20 6d |wire and then m| 00000800 6f 76 65 20 74 68 65 20 63 75 72 73 6f 72 20 20 |ove the cursor | 00000810 74 6f 20 74 68 65 20 6e 65 78 74 0d 20 20 20 20 |to the next. | 00000820 20 70 6f 73 69 74 69 6f 6e 20 61 6e 64 20 70 72 | position and pr| 00000830 65 73 73 20 66 38 20 2d 20 57 49 52 45 20 20 74 |ess f8 - WIRE t| 00000840 6f 20 67 65 6e 65 72 61 74 65 20 61 20 77 69 72 |o generate a wir| 00000850 65 20 62 65 74 77 65 65 6e 20 74 68 65 73 65 20 |e between these | 00000860 74 77 6f 0d 20 20 20 20 20 70 6f 69 6e 74 73 2e |two. points.| 00000870 20 44 65 6c 65 74 69 6e 67 20 61 20 77 69 72 65 | Deleting a wire| 00000880 20 69 73 20 61 63 68 65 69 76 65 64 20 20 62 79 | is acheived by| 00000890 20 65 78 61 63 74 6c 79 20 74 68 65 20 73 61 6d | exactly the sam| 000008a0 65 20 6d 65 74 68 6f 64 20 61 73 0d 20 20 20 20 |e method as. | 000008b0 20 70 6c 61 63 69 6e 67 20 6f 6e 65 20 69 6e 2e | placing one in.| 000008c0 0d 0d 31 2e 33 20 47 61 74 65 73 20 41 76 61 69 |..1.3 Gates Avai| 000008d0 6c 61 62 6c 65 0d 0d 20 20 20 20 20 20 20 20 20 |lable.. | 000008e0 20 20 20 20 54 68 65 20 20 66 6f 6c 6c 6f 77 69 | The followi| 000008f0 6e 67 20 20 67 61 74 65 73 20 20 61 6e 64 20 20 |ng gates and | 00000900 62 6c 6f 63 6b 73 20 61 72 65 20 20 61 76 61 69 |blocks are avai| 00000910 6c 61 62 6c 65 20 20 69 6e 20 20 74 68 65 0d 20 |lable in the. | 00000920 20 20 20 20 70 72 6f 67 72 61 6d 3b 0d 0d 20 20 | program;.. | 00000930 20 20 20 66 30 20 20 20 20 20 66 31 20 20 20 20 | f0 f1 | 00000940 20 66 32 20 20 20 20 20 66 33 20 20 20 20 20 66 | f2 f3 f| 00000950 34 20 20 20 20 20 20 66 35 20 20 20 20 20 66 36 |4 f5 f6| 00000960 0d 20 20 20 20 20 4f 52 20 20 20 20 20 4e 4f 52 |. OR NOR| 00000970 20 20 20 20 41 4e 44 20 20 20 20 4e 41 4e 44 20 | AND NAND | 00000980 20 20 49 4e 56 20 20 20 20 20 45 4f 52 20 20 20 | INV EOR | 00000990 20 66 6c 69 70 0d | flip.| 00000996
26_09_87/L\INFO.m0
26_09_87/L\INFO.m1
26_09_87/L\INFO.m2
26_09_87/L\INFO.m4
26_09_87/L\INFO.m5
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