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F/+BARCD2
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 » Personal collection » Acorn ADFS disks » Electron_User_Group » EUG_36.ADF |
| Filename: | F/+BARCD2 |
| Read OK: | ✔ |
| File size: | 08C7 bytes |
| Load address: | 2B204556 |
| Exec address: | 43524142 |
Duplicates
There is 1 duplicate copy of this file in the archive:
- Personal collection » Acorn ADFS disks » Electron_User_Group » EUG_36.ADF » F/+BARCD2
- Personal collection » Acorn hard disk » zipped_disks » elk03 » eug36/F/+BARCD2
File contents
CODE 13 BARCODES...
Using the EAN (European article number) encoding the barcode consists of
1.Combination number.This is the first digit,in our example is 5.
It refers to how the next 6 digits are encrypted as
follows
COMB # PATTERN TO FOLLOW
0 A A A A A A
1 A A B A B B
2 A A B B A B
3 A A B B B A
4 A B A A B B
5 A B B A A B
6 A B B B A A
7 A B A B A B
8 A B A B B A
9 A B B A B A
2.The start bit.Two parallel bars
3.The following 6.Encrypted as above,then (taking '1' as black and '0' as
white) are converted onto 7 bit binary digits.
REPRESENTS... SET A SET B SET C
0 0001101 0100111 1110010
1 0011001 0110011 1100110
2 0010011 0011011 1101100
3 0111101 0100001 1000010
4 0100011 0011101 1011100 Notice that not C = A and that
5 0110001 0111001 1001110 reverse of C = B
6 0101111 0000101 1010000
7 0111011 0010001 1000100
8 0110111 0001001 1001000
9 0001011 0010111 1110100
4.The guard bit.Two parallel bars
5.The following 6.Encrypted in set C always,then (taking '1' as black and
white as '0') are converted onto 7 bit binary digits.
6.The end bit.Two parallel bars
7.The checksum.For the barcode 123456782093C where C is the check bit to be determined by the following calculation
1.Add up the alternate numbers starting at the 12th:
[3+0+8+6+4+2=23]
2.Times (1) by 3 => 69
3.Add up the alternate numbers starting at the 11th:
[9+2+7+5+3+1=27]
4.Add parts (2) and (3) => 96
5.Find the smallest number needed to make part (4) evenly divisible by ten
[100-96=4 so C=4 as 100x10 is even and 4 < 14 which would be the next]
FROM...
Robert Sprowson.
Happy soldering!
00000000 0d 43 4f 44 45 20 31 33 20 42 41 52 43 4f 44 45 |.CODE 13 BARCODE| 00000010 53 2e 2e 2e 0d 0d 55 73 69 6e 67 20 74 68 65 20 |S.....Using the | 00000020 45 41 4e 20 28 45 75 72 6f 70 65 61 6e 20 61 72 |EAN (European ar| 00000030 74 69 63 6c 65 20 6e 75 6d 62 65 72 29 20 65 6e |ticle number) en| 00000040 63 6f 64 69 6e 67 20 74 68 65 20 62 61 72 63 6f |coding the barco| 00000050 64 65 20 63 6f 6e 73 69 73 74 73 20 6f 66 20 0d |de consists of .| 00000060 0d 31 2e 43 6f 6d 62 69 6e 61 74 69 6f 6e 20 6e |.1.Combination n| 00000070 75 6d 62 65 72 2e 54 68 69 73 20 69 73 20 74 68 |umber.This is th| 00000080 65 20 66 69 72 73 74 20 64 69 67 69 74 2c 69 6e |e first digit,in| 00000090 20 6f 75 72 20 65 78 61 6d 70 6c 65 20 69 73 20 | our example is | 000000a0 35 2e 0d 20 20 20 20 20 20 20 20 20 20 20 20 20 |5.. | 000000b0 20 20 20 20 20 20 20 20 49 74 20 72 65 66 65 72 | It refer| 000000c0 73 20 74 6f 20 68 6f 77 20 74 68 65 20 6e 65 78 |s to how the nex| 000000d0 74 20 36 20 64 69 67 69 74 73 20 61 72 65 20 65 |t 6 digits are e| 000000e0 6e 63 72 79 70 74 65 64 20 61 73 20 0d 20 20 20 |ncrypted as . | 000000f0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000100 20 20 66 6f 6c 6c 6f 77 73 0d 20 20 20 20 20 20 | follows. | 00000110 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 43 | C| 00000120 4f 4d 42 20 23 20 20 20 20 20 20 20 50 41 54 54 |OMB # PATT| 00000130 45 52 4e 20 54 4f 20 46 4f 4c 4c 4f 57 0d 20 20 |ERN TO FOLLOW. | 00000140 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000150 20 20 20 20 20 20 30 20 20 20 20 20 20 20 20 20 | 0 | 00000160 41 20 20 41 20 20 41 20 20 41 20 20 41 20 20 41 |A A A A A A| 00000170 0d 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 |. | 00000180 20 20 20 20 20 20 20 20 20 31 20 20 20 20 20 20 | 1 | 00000190 20 20 20 41 20 20 41 20 20 42 20 20 41 20 20 42 | A A B A B| 000001a0 20 20 42 0d 20 20 20 20 20 20 20 20 20 20 20 20 | B. | 000001b0 20 20 20 20 20 20 20 20 20 20 20 20 32 20 20 20 | 2 | 000001c0 20 20 20 20 20 20 41 20 20 41 20 20 42 20 20 42 | A A B B| 000001d0 20 20 41 20 20 42 0d 20 20 20 20 20 20 20 20 20 | A B. | 000001e0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 33 | 3| 000001f0 20 20 20 20 20 20 20 20 20 41 20 20 41 20 20 42 | A A B| 00000200 20 20 42 20 20 42 20 20 41 0d 20 20 20 20 20 20 | B B A. | 00000210 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000220 20 20 34 20 20 20 20 20 20 20 20 20 41 20 20 42 | 4 A B| 00000230 20 20 41 20 20 41 20 20 42 20 20 42 0d 20 20 20 | A A B B. | 00000240 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000250 20 20 20 20 20 35 20 20 20 20 20 20 20 20 20 41 | 5 A| 00000260 20 20 42 20 20 42 20 20 41 20 20 41 20 20 42 0d | B B A A B.| 00000270 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000280 20 20 20 20 20 20 20 20 36 20 20 20 20 20 20 20 | 6 | 00000290 20 20 41 20 20 42 20 20 42 20 20 42 20 20 41 20 | A B B B A | 000002a0 20 41 0d 20 20 20 20 20 20 20 20 20 20 20 20 20 | A. | 000002b0 20 20 20 20 20 20 20 20 20 20 20 37 20 20 20 20 | 7 | 000002c0 20 20 20 20 20 41 20 20 42 20 20 41 20 20 42 20 | A B A B | 000002d0 20 41 20 20 42 0d 20 20 20 20 20 20 20 20 20 20 | A B. | 000002e0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 38 20 | 8 | 000002f0 20 20 20 20 20 20 20 20 41 20 20 42 20 20 41 20 | A B A | 00000300 20 42 20 20 42 20 20 41 0d 20 20 20 20 20 20 20 | B B A. | 00000310 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | 00000320 20 39 20 20 20 20 20 20 20 20 20 41 20 20 42 20 | 9 A B | 00000330 20 42 20 20 41 20 20 42 20 20 41 0d 0d 32 2e 54 | B A B A..2.T| 00000340 68 65 20 73 74 61 72 74 20 62 69 74 2e 54 77 6f |he start bit.Two| 00000350 20 70 61 72 61 6c 6c 65 6c 20 62 61 72 73 0d 0d | parallel bars..| 00000360 33 2e 54 68 65 20 66 6f 6c 6c 6f 77 69 6e 67 20 |3.The following | 00000370 36 2e 45 6e 63 72 79 70 74 65 64 20 61 73 20 61 |6.Encrypted as a| 00000380 62 6f 76 65 2c 74 68 65 6e 20 28 74 61 6b 69 6e |bove,then (takin| 00000390 67 20 27 31 27 20 61 73 20 62 6c 61 63 6b 20 61 |g '1' as black a| 000003a0 6e 64 20 27 30 27 20 61 73 20 0d 20 20 20 20 20 |nd '0' as . | 000003b0 20 20 20 20 20 20 20 20 20 20 20 20 20 77 68 69 | whi| 000003c0 74 65 29 20 61 72 65 20 63 6f 6e 76 65 72 74 65 |te) are converte| 000003d0 64 20 6f 6e 74 6f 20 37 20 62 69 74 20 62 69 6e |d onto 7 bit bin| 000003e0 61 72 79 20 64 69 67 69 74 73 2e 0d 0d 52 45 50 |ary digits...REP| 000003f0 52 45 53 45 4e 54 53 2e 2e 2e 20 20 53 45 54 20 |RESENTS... SET | 00000400 41 20 20 20 20 20 53 45 54 20 42 20 20 20 20 20 |A SET B | 00000410 53 45 54 20 43 0d 20 20 20 20 20 30 20 20 20 20 |SET C. 0 | 00000420 20 20 20 20 20 30 30 30 31 31 30 31 20 20 20 30 | 0001101 0| 00000430 31 30 30 31 31 31 20 20 20 31 31 31 30 30 31 30 |100111 1110010| 00000440 0d 20 20 20 20 20 31 20 20 20 20 20 20 20 20 20 |. 1 | 00000450 30 30 31 31 30 30 31 20 20 20 30 31 31 30 30 31 |0011001 011001| 00000460 31 20 20 20 31 31 30 30 31 31 30 0d 20 20 20 20 |1 1100110. | 00000470 20 32 20 20 20 20 20 20 20 20 20 30 30 31 30 30 | 2 00100| 00000480 31 31 20 20 20 30 30 31 31 30 31 31 20 20 20 31 |11 0011011 1| 00000490 31 30 31 31 30 30 0d 20 20 20 20 20 33 20 20 20 |101100. 3 | 000004a0 20 20 20 20 20 20 30 31 31 31 31 30 31 20 20 20 | 0111101 | 000004b0 30 31 30 30 30 30 31 20 20 20 31 30 30 30 30 31 |0100001 100001| 000004c0 30 0d 20 20 20 20 20 34 20 20 20 20 20 20 20 20 |0. 4 | 000004d0 20 30 31 30 30 30 31 31 20 20 20 30 30 31 31 31 | 0100011 00111| 000004e0 30 31 20 20 20 31 30 31 31 31 30 30 20 20 4e 6f |01 1011100 No| 000004f0 74 69 63 65 20 74 68 61 74 20 6e 6f 74 20 43 20 |tice that not C | 00000500 3d 20 41 20 61 6e 64 20 74 68 61 74 0d 20 20 20 |= A and that. | 00000510 20 20 35 20 20 20 20 20 20 20 20 20 30 31 31 30 | 5 0110| 00000520 30 30 31 20 20 20 30 31 31 31 30 30 31 20 20 20 |001 0111001 | 00000530 31 30 30 31 31 31 30 20 20 72 65 76 65 72 73 65 |1001110 reverse| 00000540 20 6f 66 20 43 20 3d 20 42 0d 20 20 20 20 20 36 | of C = B. 6| 00000550 20 20 20 20 20 20 20 20 20 30 31 30 31 31 31 31 | 0101111| 00000560 20 20 20 30 30 30 30 31 30 31 20 20 20 31 30 31 | 0000101 101| 00000570 30 30 30 30 0d 20 20 20 20 20 37 20 20 20 20 20 |0000. 7 | 00000580 20 20 20 20 30 31 31 31 30 31 31 20 20 20 30 30 | 0111011 00| 00000590 31 30 30 30 31 20 20 20 31 30 30 30 31 30 30 0d |10001 1000100.| 000005a0 20 20 20 20 20 38 20 20 20 20 20 20 20 20 20 30 | 8 0| 000005b0 31 31 30 31 31 31 20 20 20 30 30 30 31 30 30 31 |110111 0001001| 000005c0 20 20 20 31 30 30 31 30 30 30 0d 20 20 20 20 20 | 1001000. | 000005d0 39 20 20 20 20 20 20 20 20 20 30 30 30 31 30 31 |9 000101| 000005e0 31 20 20 20 30 30 31 30 31 31 31 20 20 20 31 31 |1 0010111 11| 000005f0 31 30 31 30 30 0d 0d 34 2e 54 68 65 20 67 75 61 |10100..4.The gua| 00000600 72 64 20 62 69 74 2e 54 77 6f 20 70 61 72 61 6c |rd bit.Two paral| 00000610 6c 65 6c 20 62 61 72 73 0d 0d 35 2e 54 68 65 20 |lel bars..5.The | 00000620 66 6f 6c 6c 6f 77 69 6e 67 20 36 2e 45 6e 63 72 |following 6.Encr| 00000630 79 70 74 65 64 20 69 6e 20 73 65 74 20 43 20 61 |ypted in set C a| 00000640 6c 77 61 79 73 2c 74 68 65 6e 20 28 74 61 6b 69 |lways,then (taki| 00000650 6e 67 20 27 31 27 20 61 73 20 62 6c 61 63 6b 20 |ng '1' as black | 00000660 61 6e 64 20 0d 20 20 20 20 20 20 20 20 20 20 20 |and . | 00000670 20 20 20 20 20 20 20 77 68 69 74 65 20 61 73 20 | white as | 00000680 27 30 27 29 20 61 72 65 20 63 6f 6e 76 65 72 74 |'0') are convert| 00000690 65 64 20 6f 6e 74 6f 20 37 20 62 69 74 20 62 69 |ed onto 7 bit bi| 000006a0 6e 61 72 79 20 64 69 67 69 74 73 2e 0d 0d 36 2e |nary digits...6.| 000006b0 54 68 65 20 65 6e 64 20 62 69 74 2e 54 77 6f 20 |The end bit.Two | 000006c0 70 61 72 61 6c 6c 65 6c 20 62 61 72 73 0d 0d 37 |parallel bars..7| 000006d0 2e 54 68 65 20 63 68 65 63 6b 73 75 6d 2e 46 6f |.The checksum.Fo| 000006e0 72 20 74 68 65 20 62 61 72 63 6f 64 65 20 31 32 |r the barcode 12| 000006f0 33 34 35 36 37 38 32 30 39 33 43 20 77 68 65 72 |3456782093C wher| 00000700 65 20 43 20 69 73 20 74 68 65 20 63 68 65 63 6b |e C is the check| 00000710 20 62 69 74 20 74 6f 20 62 65 20 64 65 74 65 72 | bit to be deter| 00000720 6d 69 6e 65 64 20 62 79 20 74 68 65 20 66 6f 6c |mined by the fol| 00000730 6c 6f 77 69 6e 67 20 63 61 6c 63 75 6c 61 74 69 |lowing calculati| 00000740 6f 6e 0d 31 2e 41 64 64 20 75 70 20 74 68 65 20 |on.1.Add up the | 00000750 61 6c 74 65 72 6e 61 74 65 20 6e 75 6d 62 65 72 |alternate number| 00000760 73 20 73 74 61 72 74 69 6e 67 20 61 74 20 74 68 |s starting at th| 00000770 65 20 31 32 74 68 3a 0d 20 20 5b 33 2b 30 2b 38 |e 12th:. [3+0+8| 00000780 2b 36 2b 34 2b 32 3d 32 33 5d 0d 32 2e 54 69 6d |+6+4+2=23].2.Tim| 00000790 65 73 20 28 31 29 20 62 79 20 33 20 3d 3e 20 36 |es (1) by 3 => 6| 000007a0 39 0d 33 2e 41 64 64 20 75 70 20 74 68 65 20 61 |9.3.Add up the a| 000007b0 6c 74 65 72 6e 61 74 65 20 6e 75 6d 62 65 72 73 |lternate numbers| 000007c0 20 73 74 61 72 74 69 6e 67 20 61 74 20 74 68 65 | starting at the| 000007d0 20 31 31 74 68 3a 0d 20 20 5b 39 2b 32 2b 37 2b | 11th:. [9+2+7+| 000007e0 35 2b 33 2b 31 3d 32 37 5d 0d 34 2e 41 64 64 20 |5+3+1=27].4.Add | 000007f0 70 61 72 74 73 20 28 32 29 20 61 6e 64 20 28 33 |parts (2) and (3| 00000800 29 20 3d 3e 20 39 36 0d 35 2e 46 69 6e 64 20 74 |) => 96.5.Find t| 00000810 68 65 20 73 6d 61 6c 6c 65 73 74 20 6e 75 6d 62 |he smallest numb| 00000820 65 72 20 6e 65 65 64 65 64 20 74 6f 20 6d 61 6b |er needed to mak| 00000830 65 20 70 61 72 74 20 28 34 29 20 65 76 65 6e 6c |e part (4) evenl| 00000840 79 20 64 69 76 69 73 69 62 6c 65 20 62 79 20 74 |y divisible by t| 00000850 65 6e 0d 20 20 5b 31 30 30 2d 39 36 3d 34 20 73 |en. [100-96=4 s| 00000860 6f 20 43 3d 34 20 61 73 20 31 30 30 78 31 30 20 |o C=4 as 100x10 | 00000870 69 73 20 65 76 65 6e 20 61 6e 64 20 34 20 3c 20 |is even and 4 < | 00000880 31 34 20 77 68 69 63 68 20 77 6f 75 6c 64 20 62 |14 which would b| 00000890 65 20 74 68 65 20 6e 65 78 74 5d 0d 0d 46 52 4f |e the next]..FRO| 000008a0 4d 2e 2e 2e 0d 52 6f 62 65 72 74 20 53 70 72 6f |M....Robert Spro| 000008b0 77 73 6f 6e 2e 0d 48 61 70 70 79 20 73 6f 6c 64 |wson..Happy sold| 000008c0 65 72 69 6e 67 21 0d |ering!.| 000008c7
F/+BARCD2.m0
F/+BARCD2.m1
F/+BARCD2.m2
F/+BARCD2.m4
F/+BARCD2.m5
.