09-04-88/F\INFO

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09-04-88/F\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 » telesoftware6.adl
Filename:	09-04-88/F\INFO
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File size:	21D3 bytes
Load address:	0000
Exec address:	FFFFFFFF

File contents

__________________________________________________________________________

These pools prediction programs have been completely overhauled for the
current season, and incorporate several improvements to speed up their
operation and improve their ease of use. This process has inevitably led
to difficulties with some makes of adapter, and it is recommended that the
final paragraph is noted before using the programs.

The routines have been adjusted since their transmission last September to
cater for the various page layouts and quantity of sub-pages occasionally
implemented by the CEEFAX editors. Other adjustments may be necessary in
the future!
__________________________________________________________________________

Pools Prediction Programs:
==========================

This suite of programs uses CEEFAX data to predict the football results
for the current week. There are three different programs:

1. Match
2. Foot
3. Results


1. Match:
=========

From about Wednesday onwards, BBC2 CEEFAX transmit the following
Saturday's fixture list. The program "Match" will analyse these
transmissions and create a data file of match data on disc. This file can
then be used by FOOT as match data, to avoid having to type in by hand the
teams playing in each match.

The program will check to see if the fixtures list is actually being
transmitted. If it finds it, the CEEFAX pages required are listed on
screen, with each found page being reported.

The data file is created automatically as each page is found. Several of
the system's page grabbers are used, which gives a considerable time
saving over previous versions of this program. As processing is carried
out, the match number (directly relating to the pools coupon number) of
each match found is briefly displayed on screen.

The program will inform you if the fixtures list is not yet available from
CEEFAX. If this is so, the program should be run again later in the week.

2. Foot:
========

This is the main prediction program. Before using this, however, some
things must be noted. The program uses CEEFAX data to compile information
from the league tables about each team playing in the league. This
information is then used to predict the outcome of the match. It is
important to understand how this process works, as the user must provide
his own algorithm using this data! The information is kept in the
following arrays:

ITEM                        HOMETEAM       AWAYTEAM
====                        =========       =========
League points gained:         PT(m)           PT(n)
Total matches played:         P(m)            P(n)
Goals scored for team:        F(m)            F(n)
Goals scored against team:    A(m)            A(n)
Games lost:                   L(m)            L(n)
Games won:                    W(m)            W(n)
Games drawn:                  D(m)            D(n)

A formula must be devised to use as much of this information as is
necessary to produce a winning solution. The formula must be of the form:

 = (Strength of away team) - (strength of home team)

i.e. it must calculate a value for the home team, then a value for the
away team, then subtract one result from the other. Calculations that
produce results closest to zero are considered more likely to be drawn
games than those producing high values. So two teams producing a similar
number will be more likely to result in a draw than two teams producing
very different values. The formula included in the program is very simple,
and only compares the two teams league positions. To give some idea of how
to enter a suitable formula, some examples of calculating team strength
follow:

 =(PT(m)+(D(m)*3)-W(m))-(PT(n)+(D(n)*3)-W(n))

This uses points gained, drawn games and games won for each team

 =(P(m)/D(m))-(P(n)/D(n))

calculates the number of matches played, divided by the number of matches
drawn for each team

 =PT(m)-PT(n)

calculates the number of points gained for each team

 =(P(m)/L(m))-(P(n)/W(n))

studies the number of games lost by the home team, and the number of games
won by away team (a perfectly "legal" if not very logical formula!)

These formulae can be very simple such as:

 =D(m)-D(n)

which compares the number of drawn matches of each team, or more complex,
such as:

 =((L(m)+(P(m)*20))*D(m))-((W(n)+(P(n)*20))*D(n))

which considers matches drawn, lost, won, etc. A winning solution is
likely to be even more involved! It should be remembered that,
particularly early in the season, several of these values will be equal to
zero, and an error will result if your formula includes a 'division
by zero'!

Your desired formula should replace the one given in line 5000 of the
program, then the new version saved to disc before use.

When the program is run, you are asked if the match data is to be read
from disc. This is only possible if it has previously been saved to disc
using the program "Match" (see above), but will save a lot of time if it 
can be read from a disc file.

You are then asked if the league details are to be read from disc. Again,
this may only be done if this data has already been saved to disc from a
previous run of the "Foot" program. (The data is automatically saved to
disc each time "Foot" is run.)

If the league data has been taken from CEEFAX, you will then be offered a
chance to see (or print out) a list of the team names and their
corresponding numbers. This option is not available if the data is read
from disc, as the program then relies on a compressed version of the team
names which may not be very much help to you! The team names and numbers
will be needed later if you have opted to manually enter the fixtures
list. If a printout of this list is required, simply set your printer "on
line" before selecting this option.

The program proceeds to request the match data in numeric form. If the
data is read from disc, the fixtures list will be read in, stopping at the
bottom of each screen to allow you to look for any necessary corrections.
Press SHIFT to scroll the screen. If this data needs to be entered
manually, type in the appropriate team number at the prompt, as taken from
the team list offered earlier. Any corrections can be made after all the
match data has been entered.

The program will then calculate the most likely 18 matches to result in a
draw. If you want this selection sent to your printer, ensure that your
printer is "on line". Otherwise it will be sent to the screen only.

3. Results:
===========

During the execution of "Foot", a data file is created on disc of the
matches predicted. "Results" will analyse the actual results as
transmitted by CEEFAX, and calculate the maximum pools points that have
been gained using the given forecast.

If you use a pools entry with more (or less) than ten selections, the
appropriate line at the beginning of the program must be altered. The
program calculates the maximum points possible using a Full Perm plan,
but also presents the results in pools points format for normal checking
of a coupon.

The results are broadcast on BBC1 on a Saturday afternoon/evening, and
then are transferred to BBC2 for the early part  of the following week.
The program detects the day on which it is run, and will select the
correct channel and page numbers automatically. (i.e. if run on Saturday,
it will select BBC1, pages 331 onwards, but if run on, say, Monday, it
will select BBC2,  page 341.) A check is carried out to ensure the actual
results are obtained, and not the half-time results or other data. A
report will be  given, and the program terminated if the results are not
found.

If a match is declared void, or a result decided by the Pools panel, the
correct pools points will be found. Such situations will be reported when
the results are listed by the program.

This program uses several of the system's page grabbers, resulting in a
much faster execution time than from previous versions. Whilst each page
from CEEFAX is being processed, the screen will indicate briefly which
particular pools coupon match number is being studied at the time.


                                     (c) Jeremy Brayshaw   September 1987


Note: The programs have been written to operate with the BBC Microcomputer
System Teletext Adapter (both the Acorn system and the new GIS adapter)
and ATS software. They are not guaranteed to function correctly on other
makes of adapter, or with the Acorn TFS. This is because some other
teletext adapters use less versatile teletext reception chips, and it is
not possible to implement multiple simultaneous page grabbers. Systems
without ATS might not use the same commands, or implement them in the same
way.

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00000010  5f 5f 5f 5f 5f 5f 5f 5f  5f 5f 5f 5f 5f 5f 5f 5f  |________________|
*
00000040  5f 5f 5f 5f 5f 5f 5f 5f  5f 5f 5f 0d 0d 54 68 65  |___________..The|
00000050  73 65 20 70 6f 6f 6c 73  20 70 72 65 64 69 63 74  |se pools predict|
00000060  69 6f 6e 20 70 72 6f 67  72 61 6d 73 20 68 61 76  |ion programs hav|
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00000170  66 69 6e 61 6c 20 70 61  72 61 67 72 61 70 68 20  |final paragraph |
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00000250  46 41 58 20 65 64 69 74  6f 72 73 2e 20 4f 74 68  |FAX editors. Oth|
00000260  65 72 20 61 64 6a 75 73  74 6d 65 6e 74 73 20 6d  |er adjustments m|
00000270  61 79 20 62 65 20 6e 65  63 65 73 73 61 72 79 20  |ay be necessary |
00000280  69 6e 0d 74 68 65 20 66  75 74 75 72 65 21 0d 5f  |in.the future!._|
00000290  5f 5f 5f 5f 5f 5f 5f 5f  5f 5f 5f 5f 5f 5f 5f 5f  |________________|
*
000002d0  5f 5f 5f 5f 5f 5f 5f 5f  5f 0d 0d 50 6f 6f 6c 73  |_________..Pools|
000002e0  20 50 72 65 64 69 63 74  69 6f 6e 20 50 72 6f 67  | Prediction Prog|
000002f0  72 61 6d 73 3a 0d 3d 3d  3d 3d 3d 3d 3d 3d 3d 3d  |rams:.==========|
00000300  3d 3d 3d 3d 3d 3d 3d 3d  3d 3d 3d 3d 3d 3d 3d 3d  |================|
00000310  0d 0d 54 68 69 73 20 73  75 69 74 65 20 6f 66 20  |..This suite of |
00000320  70 72 6f 67 72 61 6d 73  20 75 73 65 73 20 43 45  |programs uses CE|
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00000370  54 68 65 72 65 20 61 72  65 20 74 68 72 65 65 20  |There are three |
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00000890  68 65 6e 20 75 73 65 64  20 74 6f 20 70 72 65 64  |hen used to pred|
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000008d0  20 75 6e 64 65 72 73 74  61 6e 64 20 68 6f 77 20  | understand how |
000008e0  74 68 69 73 20 70 72 6f  63 65 73 73 20 77 6f 72  |this process wor|
000008f0  6b 73 2c 20 61 73 20 74  68 65 20 75 73 65 72 20  |ks, as the user |
00000900  6d 75 73 74 20 70 72 6f  76 69 64 65 0d 68 69 73  |must provide.his|
00000910  20 6f 77 6e 20 61 6c 67  6f 72 69 74 68 6d 20 75  | own algorithm u|
00000920  73 69 6e 67 20 74 68 69  73 20 64 61 74 61 21 20  |sing this data! |
00000930  54 68 65 20 69 6e 66 6f  72 6d 61 74 69 6f 6e 20  |The information |
00000940  69 73 20 6b 65 70 74 20  69 6e 20 74 68 65 0d 66  |is kept in the.f|
00000950  6f 6c 6c 6f 77 69 6e 67  20 61 72 72 61 79 73 3a  |ollowing arrays:|
00000960  0d 0d 49 54 45 4d 20 20  20 20 20 20 20 20 20 20  |..ITEM          |
00000970  20 20 20 20 20 20 20 20  20 20 20 20 20 20 48 4f  |              HO|
00000980  4d 45 1a 54 45 41 4d 20  20 20 20 20 20 20 41 57  |ME.TEAM       AW|
00000990  41 59 1a 54 45 41 4d 0d  3d 3d 3d 3d 20 20 20 20  |AY.TEAM.====    |
000009a0  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
000009b0  20 20 20 20 3d 3d 3d 3d  3d 3d 3d 3d 3d 20 20 20  |    =========   |
000009c0  20 20 20 20 3d 3d 3d 3d  3d 3d 3d 3d 3d 0d 4c 65  |    =========.Le|
000009d0  61 67 75 65 20 70 6f 69  6e 74 73 20 67 61 69 6e  |ague points gain|
000009e0  65 64 3a 20 20 20 20 20  20 20 20 20 50 54 28 6d  |ed:         PT(m|
000009f0  29 20 20 20 20 20 20 20  20 20 20 20 50 54 28 6e  |)           PT(n|
00000a00  29 0d 54 6f 74 61 6c 20  6d 61 74 63 68 65 73 20  |).Total matches |
00000a10  70 6c 61 79 65 64 3a 20  20 20 20 20 20 20 20 20  |played:         |
00000a20  50 28 6d 29 20 20 20 20  20 20 20 20 20 20 20 20  |P(m)            |
00000a30  50 28 6e 29 0d 47 6f 61  6c 73 20 73 63 6f 72 65  |P(n).Goals score|
00000a40  64 20 66 6f 72 20 74 65  61 6d 3a 20 20 20 20 20  |d for team:     |
00000a50  20 20 20 46 28 6d 29 20  20 20 20 20 20 20 20 20  |   F(m)         |
00000a60  20 20 20 46 28 6e 29 0d  47 6f 61 6c 73 20 73 63  |   F(n).Goals sc|
00000a70  6f 72 65 64 20 61 67 61  69 6e 73 74 20 74 65 61  |ored against tea|
00000a80  6d 3a 20 20 20 20 41 28  6d 29 20 20 20 20 20 20  |m:    A(m)      |
00000a90  20 20 20 20 20 20 41 28  6e 29 0d 47 61 6d 65 73  |      A(n).Games|
00000aa0  20 6c 6f 73 74 3a 20 20  20 20 20 20 20 20 20 20  | lost:          |
00000ab0  20 20 20 20 20 20 20 20  20 4c 28 6d 29 20 20 20  |         L(m)   |
00000ac0  20 20 20 20 20 20 20 20  20 4c 28 6e 29 0d 47 61  |         L(n).Ga|
00000ad0  6d 65 73 20 77 6f 6e 3a  20 20 20 20 20 20 20 20  |mes won:        |
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00000af0  20 20 20 20 20 20 20 20  20 20 20 20 57 28 6e 29  |            W(n)|
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00001fa0  20 20 20 20 20 20 20 20  20 20 20 20 28 63 29 20  |            (c) |
00001fb0  4a 65 72 65 6d 79 20 42  72 61 79 73 68 61 77 20  |Jeremy Brayshaw |
00001fc0  20 20 53 65 70 74 65 6d  62 65 72 20 31 39 38 37  |  September 1987|
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00002190  69 67 68 74 20 6e 6f 74  20 75 73 65 20 74 68 65  |ight not use the|
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000021b0  6f 72 20 69 6d 70 6c 65  6d 65 6e 74 20 74 68 65  |or implement the|
000021c0  6d 20 69 6e 20 74 68 65  20 73 61 6d 65 0d 77 61  |m in the same.wa|
000021d0  79 2e 0d                                          |y..|
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