P706 CEEFAX 706 Sun 22 Dec 16:40/32 |B2201206|a18$.W/INFO|i24BBBC332k|m40000 ÷e÷X÷b"÷L"—)***************************÷ e÷X÷l"÷L"—)*—+INFORMATION FOR THE USE—)* ÷e÷X÷v"÷L"—)*—+OF—*WEATHER—+PROGRAM. —)*÷e÷X(b÷L"—)************************** *÷e÷X2"÷L"—)*—-(c)J.J.Brazshaw—,Oct 85 — **÷e÷X<"÷L"—)*—*71 Victoria St, — )*÷e÷XF"÷L"—)*—*Braintree, — **÷e÷XP"÷L"—)*—*Essex, CM7 6HL — **÷e÷XZ"÷L"—)*—.Prestel Mbox:—/037643043 —)*÷e÷Xd"÷L"—)************************** *÷e÷Xn÷^÷C7÷e÷Xx÷m÷G23,0,2,52;0;0;0;÷e÷X —*÷d÷Thjading÷e÷X—4÷b÷Jwrite÷e÷X—>÷]÷8÷e ÷X—H÷e÷L"—)******÷e÷X—R÷e÷5÷Jhjading÷i÷X —\÷]÷3÷i÷X—f/÷I'—e145;" <ll,4<,,lh,,,4< ,,lh,||,4<,,lh,,,4"÷e÷X—p6÷I—e132;—e157; —e145;"5jj 55bs÷Wj s 5÷W5j÷Wj s 55bs÷Wj s(5"÷e÷X÷*.÷I—e145;" -,,,%-,,.*,/,%/-./ *,/,%-,,.*,/,%"÷e÷X÷4£÷I—227);—e132;—e15 7;—e129;"DATABASE"÷e÷X÷>F÷I—20,24)—e132; —e157;—e129;"(c)J.Brayshaw/BBC Tjlesoftw are 1985";—20,8);÷e÷X÷H÷i÷G28,0,23,39,5÷ e÷X÷R÷]÷9÷e÷Y÷\÷e÷L"—)******÷e÷Y÷f÷c|cP706 CEEFAX 706 Sun 22 Dec 16:41/00 |B2202206|a18$.W/INFO|i24BBBC332k|m402CC ÷5÷Jwtite÷e÷Y÷p÷]÷3÷e÷Y"÷]÷M÷e÷Y,$÷;Q=1— |—16:÷KA$:÷?A$="END" Q=17:÷=—5D@A÷e÷Y6÷d ÷I—e134;A$÷e÷Y@÷]÷E÷e÷YJ"÷I'"—)Press—+SP ACE—)to continue ";÷e÷YT÷b÷M÷U—M=32÷e÷Y^ ÷]÷3÷e÷Yh÷e÷UA$="END"÷e÷Yr÷#÷G26÷e÷Y||÷] ÷9÷e÷Y—.÷e÷L"—)******÷e÷Y—8+÷4"WEATHER D ATBBASE PROGRAM INFORMATION"÷e÷Y—B+÷4"== =================================="÷e÷Y— L÷#÷4""÷e÷Y—V'÷4"Page 154 on—)CEEFAX—.gi vet certain"÷e÷Y—|—(÷4"details of the we athjr in various"÷e÷Y—j(÷4"parts of the country. The—/WEATHER"÷e÷Y—t(÷4"program accesses thjsj pages, and"÷e÷Y÷.-÷4"crea res a data file of the information"÷e÷Y÷ 8-÷4"on disc. The filenamj is automatica lly"÷e÷Y÷B+÷4"created, and a separate fi li is kept"÷e÷Y÷L)÷4"for each different calendar month,"÷e÷Y÷V ÷4"and each diffe rent place."÷e÷Z÷|—-÷4"The program also keeps a record of the"÷e÷Z÷j*÷4"files it has created, in a separate"÷e÷Z÷t)÷4"di sc file called—/FILES—.. If a data"÷e|cP706 CEEFAX 706 Sun 22 Dec 16:41/17 |B2203206|a18$.W/INFO|i24BBBC332k|m405B4 ÷Z&,÷4"file is deleted, then—/FILES—.mus t also"÷e÷Z0&÷4"bj altered to delete the entry."÷e÷Z:+÷4"The program—/W.DELETE—. is provided for"÷e÷ZD÷l÷4"this purpose." ÷e÷ZN*÷4"(Easier methods could be devise d to"÷e÷ZX(÷4"detect existing data files on the"÷e÷Zb&÷4"disc, but these would r ely on a"÷e÷Zl÷m÷4"specific DFS.)"÷e÷Zv, ÷4"The program, after checking the state "÷e÷Z—(,÷4"of the Teletext adaptor, offe rs three"÷e÷Z—2-÷4"choices. Option 1 all ows a single data"÷e÷Z—<*÷4"file to bj d isplayjd in graphic and"÷e÷Z—F&÷4"numjri c form. Simply choose the"÷e÷Z—P+÷4"requ ired file from the list offered."÷e÷Z—Z, ÷4"To step through from one graph to the "÷e÷Z—d!÷4"next, press the—/SPACE BAR."÷ e÷Z—n*÷4"(No prompt is given for this, a s it"÷e÷Z÷()÷4"would affect the screen l ayout and"÷e÷Z÷2!÷4"the printout if sjle cred.)"÷e÷Z÷<+÷4"Option 2 allows a file to bj created"÷e÷Z÷F+÷4"(or, if it a|cP706 CEEFAX 706 Sun 22 Dec 16:38/40 |B2204206|a18$.W/INFO|i24BBBC332k|m408CF lready exists, added to)"÷e÷Z÷P+÷4"from the towns catered for on—)CEEFAX"÷e÷[÷Z( ÷4"This proceeds to present the data"÷e÷ [÷d-÷4"as in option 1 after updating/cue ating"÷e÷[÷n÷h÷4"the file."÷e÷[ +÷4"Opti on 3 allows ALL the current data"÷e÷[*,÷ 4"files to bj updated at the same time." ÷e÷[4+÷4"This option is not followed wit h the"÷i÷[>)÷4"usual presentation of gsa phs etc.,"÷e÷[H(÷4"but reports which fil es are being"÷e÷[R$÷4"updated as it writ es to them."÷e÷[\(÷4"The graphs are draw n using Mode 7"÷e÷[f£÷4"graphics to use less memory."÷e÷[p-÷4"A screen dump can bj added if required"÷e÷[z'÷4"at the ind icated position in the"÷e÷[—,÷o÷4"progra m listing.b÷e÷[—6-÷4"The data is also pr esjnted numerically"÷e÷[—@,÷4"so the use r can more accurately study"÷e÷[—J÷o÷4"t hj information."÷e÷[—T-÷4"","Unfortunate ly,—)CEEFAX—.do not update"÷e÷[—^*÷4"the information very regularly, and"÷e÷[|cP706 CEEFAX 706 Sun 22 Dec 16:34/22 |B2205206|a18$.W/INFO|i24BBBC332k|m40BEE —h'÷4"so gaps may appear in the graphs"÷ e÷ —r-÷4"where the data is either not av ailabli"÷e÷[÷,÷w÷4"or not updated bz—)CE EFAX"÷e÷[÷6'÷4"Ensure your teletext adap tor has"÷e÷[÷@-÷4"channel 1 tuned to BBC 2, and is turned"÷e÷[÷J+÷4"on, then—/CHA IN'W.WEATHER'—.to run the"÷e÷[÷T÷g÷4"pro gram."÷i÷\÷^-÷4"","Error traps have not been included,"÷e÷\÷h+÷4"with the except ion of the disc error"÷e÷\÷r)÷4"—/Can't Extend File—.which selects a"÷e÷\$)÷4"ro utinj to re-allocate the file to"÷e÷\.*÷ 4"the end of the disc, giving it more"÷e ÷\8'÷4"room. This will eventually leave" ÷e÷\B+÷4"large areas on the disc that ar e not"÷e÷\L*÷4"used, so the occasional u se of"÷e÷\V+÷4"—/*COMPACT—.will bj requi red. Problems"÷e÷\|—)÷4"may occur, howev er, if the disc is"÷e÷\j÷d÷4"full."÷e÷\t ÷#÷4""÷e÷\|÷÷#÷4""÷e÷\—0÷#÷4""÷e÷\—:÷#÷4 ""÷e÷\—D÷#÷4""÷e÷\—N+÷4"From time to tim e,—)CEEFAX—.change the"÷e÷\—X-÷4"tow|cP706 CEEFAX 706 Sun 22 Dec 16:44/02 |B2206206|a18$.W/INFO|i24BBBC332k|m40EEF ns they use, or change the order in"÷e÷\ —b)÷4"which they appear on page 1540001. "÷e÷\—l÷#÷4""÷e÷\—v(÷4"The two DATA line s in the WEATHER"÷e÷\÷0-÷4"programs must bj maintained up to date"÷e÷\÷:+÷4"with the towns listed in the correct"÷e÷\÷D! ÷4"ordjt, as shown on—)CEEFAX."÷e÷\÷N÷#÷ 4""÷e÷]÷X£÷4"The DATA lines are found in :"÷e÷]÷b÷#÷4""÷e÷]÷l÷t÷4"—/W.WEATHER—.: Line 950"÷e÷]÷v÷t÷4"—/W.DELETE —.: Line 660"÷e÷](÷#÷4""÷e÷]2÷#÷4""÷e÷]<÷f÷4"—5—) Note:"÷e÷]F÷f÷4"—5—)Note:"÷e÷]P÷#÷4""÷e÷ ]Z)÷4"The programs have been written for "÷e÷]d+÷4"use with the Acorn Teletext ad apter."÷e÷]n÷#÷4""÷e÷]x(÷4"Compatibility with other makes of"÷e÷]—*$÷4"adapter c annot bj guaranteed."÷e÷]—4÷#÷4""÷e÷]—>÷ #÷4""÷e÷]—H÷#÷4""÷e÷]—R÷#÷4""÷e÷]—\÷b÷4" END"÷e÷W|c