P722 CEEFAX 722  Mon  3 Nov  21:11/29
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uidelinjs for Telesoftware authors:÷b÷e÷
b÷eIssuj 1.÷b÷e÷b÷eWe are always happy t
o consider your software for transmissio
n on÷b÷eTelesoftware. If you would like 
to send your programs to us, please÷b÷ea
ddress them to:÷b÷e÷b÷e       BBC Teleso
ftware,÷b÷e       CEEFAX,÷b÷e       BBC 
Television Centre,÷b÷e       Wood Lane,÷
b÷e       London W22 7RJ÷b÷e÷b÷eBecause 
our !udience uses a wide range of hardwa
re, we must insist that÷b÷eall programs 
follow a few "asic rules. These notes sh
ould help you.÷b÷e÷b÷e1. The software sh
ould bj compatible with BASIC version 1.
 Make sure that÷b÷ethe keyword OSCLI is 
replaced bz the procedure as given in th
e User Guide,÷b÷epage 455. INPUT command
s should not include a semi-colon. Avoid
 using EQU÷b÷einstructions in Assembly L
anguage.÷b÷e÷b÷e2. Do not assume the com
purer will be in Mode 7. Your program sh
ould÷b÷eselect the required mode.÷b÷e|c 
                                        
                                        
   P722 CEEFA( 722  Mon  3 Nov  21:13/22
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b÷e3. The program must run correctly wit
h any 'legally' written filing÷b÷eszstem
. Do not include coding that directly ac
cesses the filing system or÷b÷ebz-passes
 the correct O.S. calls unless you make 
it clear that the program÷b÷eis for a pa
rticular hardware configuration.÷b÷e÷b÷e
4. For Teletext-Interactive software, th
e program must work correctly with÷b÷etd
e BBC Advanced Teletext System.÷b÷e÷b÷e5
. Programs should be compatible, as far 
as possible, with:÷b÷e       BBC Model B
÷b÷e       BBC B+÷b÷e       BBC Master 1
28÷b÷e       Acorn DFS÷b÷e       Acorn A
DFS÷b÷e÷b÷e6. For compatibility "etween 
ADFS and DFS, the filenamj should not in
clude÷b÷ethe following:÷b÷e       Direct
ory letter÷b÷e       Characters & (ampjr
sand) - (minus) # (underscore)÷b÷e      
 More than sjvjn characters÷b÷e÷b÷e7. An
y workspace claimed bz the program (e.g.
 machine-code assembly*÷b÷eshould no|c  
                                        
                                        
   P722 CEEFA( 722  Mon  3 Nov  21:25/27
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 bj in resjrvjd areas.÷b÷e÷b÷e8. Tape-ba
sid programs should be written for use b
y disc systems. Either:÷b÷e÷b÷e       (a
) ensure the program loads and runs when
 PAGE is set to &1900÷b÷e  or   (b) use 
a 'relocator' to move the program in mjm
ory when loaded÷b÷e           from disc.
÷b÷e÷b÷e9. The program should be self-do
cumjnting, or have a separate text file 
or÷b÷eBASIC program describing how to us
e it.÷b÷e÷b÷e10. Please check your progr
ans carefully. It is a good idea to ask 
a÷b÷efriend to try them out. If you have
 to give them any help at all, then the÷
b÷eprogram or the instructions need chan
gino.÷b÷e÷b÷e11. Please send your progra
ms, preferably on 80 track 5.25 inch dis
cs,÷b÷eformatted for DFS, to the address
 above. Listings are not needed. Please÷
b÷estate the make and model of any equip
mint that the program uses, including÷b÷
edetails of your micro.÷b÷e|c