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CeeFax/I\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 » telesoftware1.adl |
| Filename: | CeeFax/I\INFO |
| Read OK: | ✔ |
| File size: | 0A6D bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
Teletext Index Printer The programs "INDEX1" and "INDEX3" are BASIC routines. To receive a printout of the full teletext indexes, CHAIN "INDEX1" (for a CEEFAX index), or CHAIN "INDEX3" (for the ITV ORACLE index). You must have an Acorn teletext adapter, the ATS ROM, and a printer. If the printer is not Epson compatible, then you must adjust the line in the program that sets double-width printing and skip-over-perforations. If your printer does not support these features, then delete the appropriate VDU commands as located by the REM statements, but you may need to adjust the spacing of the heading as printed out. The full index for both BBC1 and BBC2 is available on pages 199 or 299. Both sets of pages are identical, and the program "INDEX1" has been written to look at the BBC1 transmissions. It can be altered to take the details from BBC2 if your reception of BBC1 is poor, by altering the line selecting BBC1, and altering the page numbers in the data statement. The ITV companies have a similar set-up for their indexes. The program "INDEX3" looks at the ITV (channel 3) transmissions rather than those from Channel 4, for two reasons - their sub-page numbering system is more reliable, and the ITV cycle time is less than CH4. If you wish to convert "INDEX3" to receive data from CH4, alter the appropriate channel selection command, change the page references (in the DATA statement) to 5990001 etc., and delete the *MAGAZINE command. The information produced will be the same from either channel! These programs are revised versions of previous telesoftware files, and now make use of several of the system's page grabbers. In so doing, it eliminates the often lengthy wait for the first sub-page to be transmitted before attempting to do anything! The other major advantage with this feature is that the capture of subsequent sub-pages is no longer held up by the printing of the previous page. In previous versions, this problem led in some circumstances to the ORACLE index taking up to 20 minutes to print out! It should now take less than 3 minutes. In implementing these features, it now means the programs will not run on the Morley adapter (even with the ATS). This is because this adapter has only a single page grabber, and cannot simultaneously grab more than one page at a time. Users of the Acorn adapter, however, have access to 20 page grabbers, and can therefore extend this technique to other applications. The use of page grabbers for simultaneous page capture, and how to implement them in your own software, will be fully discussed in a future module of the ATS programming series (module 12). J.J.Brayshaw July 1987
00000000 0d 54 65 6c 65 74 65 78 74 20 49 6e 64 65 78 20 |.Teletext Index | 00000010 50 72 69 6e 74 65 72 0d 0d 54 68 65 20 70 72 6f |Printer..The pro| 00000020 67 72 61 6d 73 20 22 49 4e 44 45 58 31 22 20 61 |grams "INDEX1" a| 00000030 6e 64 20 22 49 4e 44 45 58 33 22 20 61 72 65 20 |nd "INDEX3" are | 00000040 42 41 53 49 43 20 72 6f 75 74 69 6e 65 73 2e 20 |BASIC routines. | 00000050 54 6f 20 72 65 63 65 69 76 65 20 61 0d 70 72 69 |To receive a.pri| 00000060 6e 74 6f 75 74 20 6f 66 20 74 68 65 20 66 75 6c |ntout of the ful| 00000070 6c 20 74 65 6c 65 74 65 78 74 20 69 6e 64 65 78 |l teletext index| 00000080 65 73 2c 20 43 48 41 49 4e 20 22 49 4e 44 45 58 |es, CHAIN "INDEX| 00000090 31 22 20 28 66 6f 72 20 61 20 43 45 45 46 41 58 |1" (for a CEEFAX| 000000a0 0d 69 6e 64 65 78 29 2c 20 6f 72 20 43 48 41 49 |.index), or CHAI| 000000b0 4e 20 22 49 4e 44 45 58 33 22 20 28 66 6f 72 20 |N "INDEX3" (for | 000000c0 74 68 65 20 49 54 56 20 4f 52 41 43 4c 45 20 69 |the ITV ORACLE i| 000000d0 6e 64 65 78 29 2e 20 59 6f 75 20 6d 75 73 74 20 |ndex). You must | 000000e0 68 61 76 65 20 61 6e 0d 41 63 6f 72 6e 20 74 65 |have an.Acorn te| 000000f0 6c 65 74 65 78 74 20 61 64 61 70 74 65 72 2c 20 |letext adapter, | 00000100 74 68 65 20 41 54 53 20 52 4f 4d 2c 20 61 6e 64 |the ATS ROM, and| 00000110 20 61 20 70 72 69 6e 74 65 72 2e 20 49 66 20 74 | a printer. If t| 00000120 68 65 20 70 72 69 6e 74 65 72 20 69 73 20 6e 6f |he printer is no| 00000130 74 0d 45 70 73 6f 6e 20 63 6f 6d 70 61 74 69 62 |t.Epson compatib| 00000140 6c 65 2c 20 74 68 65 6e 20 79 6f 75 20 6d 75 73 |le, then you mus| 00000150 74 20 61 64 6a 75 73 74 20 74 68 65 20 6c 69 6e |t adjust the lin| 00000160 65 20 69 6e 20 74 68 65 20 70 72 6f 67 72 61 6d |e in the program| 00000170 20 74 68 61 74 20 73 65 74 73 0d 64 6f 75 62 6c | that sets.doubl| 00000180 65 2d 77 69 64 74 68 20 70 72 69 6e 74 69 6e 67 |e-width printing| 00000190 20 61 6e 64 20 73 6b 69 70 2d 6f 76 65 72 2d 70 | and skip-over-p| 000001a0 65 72 66 6f 72 61 74 69 6f 6e 73 2e 20 49 66 20 |erforations. If | 000001b0 79 6f 75 72 20 70 72 69 6e 74 65 72 20 64 6f 65 |your printer doe| 000001c0 73 20 6e 6f 74 0d 73 75 70 70 6f 72 74 20 74 68 |s not.support th| 000001d0 65 73 65 20 66 65 61 74 75 72 65 73 2c 20 74 68 |ese features, th| 000001e0 65 6e 20 64 65 6c 65 74 65 20 74 68 65 20 61 70 |en delete the ap| 000001f0 70 72 6f 70 72 69 61 74 65 20 56 44 55 20 63 6f |propriate VDU co| 00000200 6d 6d 61 6e 64 73 20 61 73 0d 6c 6f 63 61 74 65 |mmands as.locate| 00000210 64 20 62 79 20 74 68 65 20 52 45 4d 20 73 74 61 |d by the REM sta| 00000220 74 65 6d 65 6e 74 73 2c 20 62 75 74 20 79 6f 75 |tements, but you| 00000230 20 6d 61 79 20 6e 65 65 64 20 74 6f 20 61 64 6a | may need to adj| 00000240 75 73 74 20 74 68 65 20 73 70 61 63 69 6e 67 20 |ust the spacing | 00000250 6f 66 0d 74 68 65 20 68 65 61 64 69 6e 67 20 61 |of.the heading a| 00000260 73 20 70 72 69 6e 74 65 64 20 6f 75 74 2e 0d 0d |s printed out...| 00000270 54 68 65 20 66 75 6c 6c 20 69 6e 64 65 78 20 66 |The full index f| 00000280 6f 72 20 62 6f 74 68 20 42 42 43 31 20 61 6e 64 |or both BBC1 and| 00000290 20 42 42 43 32 20 69 73 20 61 76 61 69 6c 61 62 | BBC2 is availab| 000002a0 6c 65 20 6f 6e 20 70 61 67 65 73 20 31 39 39 20 |le on pages 199 | 000002b0 6f 72 20 32 39 39 2e 0d 42 6f 74 68 20 73 65 74 |or 299..Both set| 000002c0 73 20 6f 66 20 70 61 67 65 73 20 61 72 65 20 69 |s of pages are i| 000002d0 64 65 6e 74 69 63 61 6c 2c 20 61 6e 64 20 74 68 |dentical, and th| 000002e0 65 20 70 72 6f 67 72 61 6d 20 22 49 4e 44 45 58 |e program "INDEX| 000002f0 31 22 20 68 61 73 20 62 65 65 6e 0d 77 72 69 74 |1" has been.writ| 00000300 74 65 6e 20 74 6f 20 6c 6f 6f 6b 20 61 74 20 74 |ten to look at t| 00000310 68 65 20 42 42 43 31 20 74 72 61 6e 73 6d 69 73 |he BBC1 transmis| 00000320 73 69 6f 6e 73 2e 20 49 74 20 63 61 6e 20 62 65 |sions. It can be| 00000330 20 61 6c 74 65 72 65 64 20 74 6f 20 74 61 6b 65 | altered to take| 00000340 20 74 68 65 0d 64 65 74 61 69 6c 73 20 66 72 6f | the.details fro| 00000350 6d 20 42 42 43 32 20 69 66 20 79 6f 75 72 20 72 |m BBC2 if your r| 00000360 65 63 65 70 74 69 6f 6e 20 6f 66 20 42 42 43 31 |eception of BBC1| 00000370 20 69 73 20 70 6f 6f 72 2c 20 62 79 20 61 6c 74 | is poor, by alt| 00000380 65 72 69 6e 67 20 74 68 65 20 6c 69 6e 65 0d 73 |ering the line.s| 00000390 65 6c 65 63 74 69 6e 67 20 42 42 43 31 2c 20 61 |electing BBC1, a| 000003a0 6e 64 20 61 6c 74 65 72 69 6e 67 20 74 68 65 20 |nd altering the | 000003b0 70 61 67 65 20 6e 75 6d 62 65 72 73 20 69 6e 20 |page numbers in | 000003c0 74 68 65 20 64 61 74 61 20 73 74 61 74 65 6d 65 |the data stateme| 000003d0 6e 74 2e 0d 0d 54 68 65 20 49 54 56 20 63 6f 6d |nt...The ITV com| 000003e0 70 61 6e 69 65 73 20 68 61 76 65 20 61 20 73 69 |panies have a si| 000003f0 6d 69 6c 61 72 20 73 65 74 2d 75 70 20 66 6f 72 |milar set-up for| 00000400 20 74 68 65 69 72 20 69 6e 64 65 78 65 73 2e 20 | their indexes. | 00000410 54 68 65 20 70 72 6f 67 72 61 6d 0d 22 49 4e 44 |The program."IND| 00000420 45 58 33 22 20 6c 6f 6f 6b 73 20 61 74 20 74 68 |EX3" looks at th| 00000430 65 20 49 54 56 20 28 63 68 61 6e 6e 65 6c 20 33 |e ITV (channel 3| 00000440 29 20 74 72 61 6e 73 6d 69 73 73 69 6f 6e 73 20 |) transmissions | 00000450 72 61 74 68 65 72 20 74 68 61 6e 20 74 68 6f 73 |rather than thos| 00000460 65 20 66 72 6f 6d 0d 43 68 61 6e 6e 65 6c 20 34 |e from.Channel 4| 00000470 2c 20 66 6f 72 20 74 77 6f 20 72 65 61 73 6f 6e |, for two reason| 00000480 73 20 2d 20 74 68 65 69 72 20 73 75 62 2d 70 61 |s - their sub-pa| 00000490 67 65 20 6e 75 6d 62 65 72 69 6e 67 20 73 79 73 |ge numbering sys| 000004a0 74 65 6d 20 69 73 20 6d 6f 72 65 0d 72 65 6c 69 |tem is more.reli| 000004b0 61 62 6c 65 2c 20 61 6e 64 20 74 68 65 20 49 54 |able, and the IT| 000004c0 56 20 63 79 63 6c 65 20 74 69 6d 65 20 69 73 20 |V cycle time is | 000004d0 6c 65 73 73 20 74 68 61 6e 20 43 48 34 2e 0d 0d |less than CH4...| 000004e0 49 66 20 79 6f 75 20 77 69 73 68 20 74 6f 20 63 |If you wish to c| 000004f0 6f 6e 76 65 72 74 20 22 49 4e 44 45 58 33 22 20 |onvert "INDEX3" | 00000500 74 6f 20 72 65 63 65 69 76 65 20 64 61 74 61 20 |to receive data | 00000510 66 72 6f 6d 20 43 48 34 2c 20 61 6c 74 65 72 20 |from CH4, alter | 00000520 74 68 65 0d 61 70 70 72 6f 70 72 69 61 74 65 20 |the.appropriate | 00000530 63 68 61 6e 6e 65 6c 20 73 65 6c 65 63 74 69 6f |channel selectio| 00000540 6e 20 63 6f 6d 6d 61 6e 64 2c 20 63 68 61 6e 67 |n command, chang| 00000550 65 20 74 68 65 20 70 61 67 65 20 72 65 66 65 72 |e the page refer| 00000560 65 6e 63 65 73 20 28 69 6e 20 74 68 65 0d 44 41 |ences (in the.DA| 00000570 54 41 20 73 74 61 74 65 6d 65 6e 74 29 20 74 6f |TA statement) to| 00000580 20 35 39 39 30 30 30 31 20 65 74 63 2e 2c 20 61 | 5990001 etc., a| 00000590 6e 64 20 64 65 6c 65 74 65 20 74 68 65 20 2a 4d |nd delete the *M| 000005a0 41 47 41 5a 49 4e 45 20 63 6f 6d 6d 61 6e 64 2e |AGAZINE command.| 000005b0 20 54 68 65 0d 69 6e 66 6f 72 6d 61 74 69 6f 6e | The.information| 000005c0 20 70 72 6f 64 75 63 65 64 20 77 69 6c 6c 20 62 | produced will b| 000005d0 65 20 74 68 65 20 73 61 6d 65 20 66 72 6f 6d 20 |e the same from | 000005e0 65 69 74 68 65 72 20 63 68 61 6e 6e 65 6c 21 0d |either channel!.| 000005f0 0d 54 68 65 73 65 20 70 72 6f 67 72 61 6d 73 20 |.These programs | 00000600 61 72 65 20 72 65 76 69 73 65 64 20 76 65 72 73 |are revised vers| 00000610 69 6f 6e 73 20 6f 66 20 70 72 65 76 69 6f 75 73 |ions of previous| 00000620 20 74 65 6c 65 73 6f 66 74 77 61 72 65 20 66 69 | telesoftware fi| 00000630 6c 65 73 2c 20 61 6e 64 0d 6e 6f 77 20 6d 61 6b |les, and.now mak| 00000640 65 20 75 73 65 20 6f 66 20 73 65 76 65 72 61 6c |e use of several| 00000650 20 6f 66 20 74 68 65 20 73 79 73 74 65 6d 27 73 | of the system's| 00000660 20 70 61 67 65 20 67 72 61 62 62 65 72 73 2e 20 | page grabbers. | 00000670 49 6e 20 73 6f 20 64 6f 69 6e 67 2c 20 69 74 0d |In so doing, it.| 00000680 65 6c 69 6d 69 6e 61 74 65 73 20 74 68 65 20 6f |eliminates the o| 00000690 66 74 65 6e 20 6c 65 6e 67 74 68 79 20 77 61 69 |ften lengthy wai| 000006a0 74 20 66 6f 72 20 74 68 65 20 66 69 72 73 74 20 |t for the first | 000006b0 73 75 62 2d 70 61 67 65 20 74 6f 20 62 65 20 74 |sub-page to be t| 000006c0 72 61 6e 73 6d 69 74 74 65 64 0d 62 65 66 6f 72 |ransmitted.befor| 000006d0 65 20 61 74 74 65 6d 70 74 69 6e 67 20 74 6f 20 |e attempting to | 000006e0 64 6f 20 61 6e 79 74 68 69 6e 67 21 20 54 68 65 |do anything! The| 000006f0 20 6f 74 68 65 72 20 6d 61 6a 6f 72 20 61 64 76 | other major adv| 00000700 61 6e 74 61 67 65 20 77 69 74 68 20 74 68 69 73 |antage with this| 00000710 0d 66 65 61 74 75 72 65 20 69 73 20 74 68 61 74 |.feature is that| 00000720 20 74 68 65 20 63 61 70 74 75 72 65 20 6f 66 20 | the capture of | 00000730 73 75 62 73 65 71 75 65 6e 74 20 73 75 62 2d 70 |subsequent sub-p| 00000740 61 67 65 73 20 69 73 20 6e 6f 20 6c 6f 6e 67 65 |ages is no longe| 00000750 72 20 68 65 6c 64 20 75 70 0d 62 79 20 74 68 65 |r held up.by the| 00000760 20 70 72 69 6e 74 69 6e 67 20 6f 66 20 74 68 65 | printing of the| 00000770 20 70 72 65 76 69 6f 75 73 20 70 61 67 65 2e 20 | previous page. | 00000780 49 6e 20 70 72 65 76 69 6f 75 73 20 76 65 72 73 |In previous vers| 00000790 69 6f 6e 73 2c 20 74 68 69 73 20 70 72 6f 62 6c |ions, this probl| 000007a0 65 6d 0d 6c 65 64 20 69 6e 20 73 6f 6d 65 20 63 |em.led in some c| 000007b0 69 72 63 75 6d 73 74 61 6e 63 65 73 20 74 6f 20 |ircumstances to | 000007c0 74 68 65 20 4f 52 41 43 4c 45 20 69 6e 64 65 78 |the ORACLE index| 000007d0 20 74 61 6b 69 6e 67 20 75 70 20 74 6f 20 32 30 | taking up to 20| 000007e0 20 6d 69 6e 75 74 65 73 20 74 6f 0d 70 72 69 6e | minutes to.prin| 000007f0 74 20 6f 75 74 21 20 49 74 20 73 68 6f 75 6c 64 |t out! It should| 00000800 20 6e 6f 77 20 74 61 6b 65 20 6c 65 73 73 20 74 | now take less t| 00000810 68 61 6e 20 33 20 6d 69 6e 75 74 65 73 2e 0d 0d |han 3 minutes...| 00000820 49 6e 20 69 6d 70 6c 65 6d 65 6e 74 69 6e 67 20 |In implementing | 00000830 74 68 65 73 65 20 66 65 61 74 75 72 65 73 2c 20 |these features, | 00000840 69 74 20 6e 6f 77 20 6d 65 61 6e 73 20 74 68 65 |it now means the| 00000850 20 70 72 6f 67 72 61 6d 73 20 77 69 6c 6c 20 6e | programs will n| 00000860 6f 74 20 72 75 6e 20 6f 6e 0d 74 68 65 20 4d 6f |ot run on.the Mo| 00000870 72 6c 65 79 20 61 64 61 70 74 65 72 20 28 65 76 |rley adapter (ev| 00000880 65 6e 20 77 69 74 68 20 74 68 65 20 41 54 53 29 |en with the ATS)| 00000890 2e 20 54 68 69 73 20 69 73 20 62 65 63 61 75 73 |. This is becaus| 000008a0 65 20 74 68 69 73 20 61 64 61 70 74 65 72 20 68 |e this adapter h| 000008b0 61 73 0d 6f 6e 6c 79 20 61 20 73 69 6e 67 6c 65 |as.only a single| 000008c0 20 70 61 67 65 20 67 72 61 62 62 65 72 2c 20 61 | page grabber, a| 000008d0 6e 64 20 63 61 6e 6e 6f 74 20 73 69 6d 75 6c 74 |nd cannot simult| 000008e0 61 6e 65 6f 75 73 6c 79 20 67 72 61 62 20 6d 6f |aneously grab mo| 000008f0 72 65 20 74 68 61 6e 20 6f 6e 65 0d 70 61 67 65 |re than one.page| 00000900 20 61 74 20 61 20 74 69 6d 65 2e 20 55 73 65 72 | at a time. User| 00000910 73 20 6f 66 20 74 68 65 20 41 63 6f 72 6e 20 61 |s of the Acorn a| 00000920 64 61 70 74 65 72 2c 20 68 6f 77 65 76 65 72 2c |dapter, however,| 00000930 20 68 61 76 65 20 61 63 63 65 73 73 20 74 6f 20 | have access to | 00000940 32 30 0d 70 61 67 65 20 67 72 61 62 62 65 72 73 |20.page grabbers| 00000950 2c 20 61 6e 64 20 63 61 6e 20 74 68 65 72 65 66 |, and can theref| 00000960 6f 72 65 20 65 78 74 65 6e 64 20 74 68 69 73 20 |ore extend this | 00000970 74 65 63 68 6e 69 71 75 65 20 74 6f 20 6f 74 68 |technique to oth| 00000980 65 72 0d 61 70 70 6c 69 63 61 74 69 6f 6e 73 2e |er.applications.| 00000990 0d 0d 54 68 65 20 75 73 65 20 6f 66 20 70 61 67 |..The use of pag| 000009a0 65 20 67 72 61 62 62 65 72 73 20 66 6f 72 20 73 |e grabbers for s| 000009b0 69 6d 75 6c 74 61 6e 65 6f 75 73 20 70 61 67 65 |imultaneous page| 000009c0 20 63 61 70 74 75 72 65 2c 20 61 6e 64 20 68 6f | capture, and ho| 000009d0 77 20 74 6f 0d 69 6d 70 6c 65 6d 65 6e 74 20 74 |w to.implement t| 000009e0 68 65 6d 20 69 6e 20 79 6f 75 72 20 6f 77 6e 20 |hem in your own | 000009f0 73 6f 66 74 77 61 72 65 2c 20 77 69 6c 6c 20 62 |software, will b| 00000a00 65 20 66 75 6c 6c 79 20 64 69 73 63 75 73 73 65 |e fully discusse| 00000a10 64 20 69 6e 20 61 20 66 75 74 75 72 65 0d 6d 6f |d in a future.mo| 00000a20 64 75 6c 65 20 6f 66 20 74 68 65 20 41 54 53 20 |dule of the ATS | 00000a30 70 72 6f 67 72 61 6d 6d 69 6e 67 20 73 65 72 69 |programming seri| 00000a40 65 73 20 28 6d 6f 64 75 6c 65 20 31 32 29 2e 0d |es (module 12)..| 00000a50 0d 4a 2e 4a 2e 42 72 61 79 73 68 61 77 20 20 20 |.J.J.Brayshaw | 00000a60 20 20 20 4a 75 6c 79 20 31 39 38 37 0d | July 1987.| 00000a6d
CeeFax/I\INFO.m0
CeeFax/I\INFO.m1
CeeFax/I\INFO.m2
CeeFax/I\INFO.m4
CeeFax/I\INFO.m5
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