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11-09-88/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 » telesoftware9.adl
Filename: 11-09-88/F\INFO
Read OK: ✔
File size: 220F bytes
Load address: 0000
Exec address: FFFFFFFF
File contents
__________________________________________________________________________

These pools prediction programs have been updated for use with the
expanded CEEFAX league table data for the 1988/9 season.

Some makes of adapter cannot implement multiple page grabbers, necessary
to give a reasonable data access time, due to their design. This cannot be
overcome by software, and is a direct result of the type of teletext
reception chip used in their design. Such adapters will not be able to use
these routines.

The routines have been adjusted since their last broadcast 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 Tuesday 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 "Foot", 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
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   August 1988


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 or ATS+ software. They are not guaranteed to function correctly on
other makes of adapter, even with ATS. This is because some other teletext
adapters use less versatile teletext reception chips, and it is not
possible to implement multiple simultaneous page grabbers. This is a
restriction of the hardware, and cannot be overcome in software.

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*
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000002e0  5f 5f 5f 5f 5f 5f 5f 5f  5f 5f 5f 5f 5f 5f 5f 5f  |________________|
*
00000320  5f 5f 5f 5f 5f 5f 0d 0d  50 6f 6f 6c 73 20 50 72  |______..Pools Pr|
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000009b0  4d 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |M               |
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000009e0  41 4d 0d 3d 3d 3d 3d 20  20 20 20 20 20 20 20 20  |AM.====         |
000009f0  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 3d  |               =|
00000a00  3d 3d 3d 3d 3d 3d 3d 3d  20 20 20 20 20 20 20 3d  |========       =|
00000a10  3d 3d 3d 3d 3d 3d 3d 3d  0d 4c 65 61 67 75 65 20  |========.League |
00000a20  70 6f 69 6e 74 73 20 67  61 69 6e 65 64 3a 20 20  |points gained:  |
00000a30  20 20 20 20 20 20 20 50  54 28 6d 29 20 20 20 20  |       PT(m)    |
00000a40  20 20 20 20 20 20 20 50  54 28 6e 29 0d 54 6f 74  |       PT(n).Tot|
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00000a60  64 3a 20 20 20 20 20 20  20 20 20 50 28 6d 29 20  |d:         P(m) |
00000a70  20 20 20 20 20 20 20 20  20 20 20 50 28 6e 29 0d  |           P(n).|
00000a80  47 6f 61 6c 73 20 73 63  6f 72 65 64 20 66 6f 72  |Goals scored for|
00000a90  20 74 65 61 6d 3a 20 20  20 20 20 20 20 20 46 28  | team:        F(|
00000aa0  6d 29 20 20 20 20 20 20  20 20 20 20 20 20 46 28  |m)            F(|
00000ab0  6e 29 0d 47 6f 61 6c 73  20 73 63 6f 72 65 64 20  |n).Goals scored |
00000ac0  61 67 61 69 6e 73 74 20  74 65 61 6d 3a 20 20 20  |against team:   |
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00001940  70 72 69 6e 74 65 72 20  69 73 20 22 6f 6e 20 6c  |printer is "on l|
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00001fb0  65 72 20 69 73 20 62 65  69 6e 67 20 73 74 75 64  |er is being stud|
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00001fd0  0d 0d 0d 20 20 20 20 20  20 20 20 20 20 20 20 20  |...             |
00001fe0  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
00001ff0  20 20 20 20 20 20 20 20  28 63 29 20 4a 65 72 65  |        (c) Jere|
00002000  6d 79 20 42 72 61 79 73  68 61 77 20 20 20 41 75  |my Brayshaw   Au|
00002010  67 75 73 74 20 31 39 38  38 0d 0d 0d 4e 6f 74 65  |gust 1988...Note|
00002020  3a 20 54 68 65 20 70 72  6f 67 72 61 6d 73 20 68  |: The programs h|
00002030  61 76 65 20 62 65 65 6e  20 77 72 69 74 74 65 6e  |ave been written|
00002040  20 74 6f 20 6f 70 65 72  61 74 65 20 77 69 74 68  | to operate with|
00002050  20 74 68 65 20 42 42 43  20 4d 69 63 72 6f 63 6f  | the BBC Microco|
00002060  6d 70 75 74 65 72 0d 53  79 73 74 65 6d 20 54 65  |mputer.System Te|
00002070  6c 65 74 65 78 74 20 41  64 61 70 74 65 72 20 28  |letext Adapter (|
00002080  62 6f 74 68 20 74 68 65  20 41 63 6f 72 6e 20 73  |both the Acorn s|
00002090  79 73 74 65 6d 20 61 6e  64 20 74 68 65 20 6e 65  |ystem and the ne|
000020a0  77 20 47 49 53 20 61 64  61 70 74 65 72 29 0d 61  |w GIS adapter).a|
000020b0  6e 64 20 41 54 53 20 6f  72 20 41 54 53 2b 20 73  |nd ATS or ATS+ s|
000020c0  6f 66 74 77 61 72 65 2e  20 54 68 65 79 20 61 72  |oftware. They ar|
000020d0  65 20 6e 6f 74 20 67 75  61 72 61 6e 74 65 65 64  |e not guaranteed|
000020e0  20 74 6f 20 66 75 6e 63  74 69 6f 6e 20 63 6f 72  | to function cor|
000020f0  72 65 63 74 6c 79 20 6f  6e 0d 6f 74 68 65 72 20  |rectly on.other |
00002100  6d 61 6b 65 73 20 6f 66  20 61 64 61 70 74 65 72  |makes of adapter|
00002110  2c 20 65 76 65 6e 20 77  69 74 68 20 41 54 53 2e  |, even with ATS.|
00002120  20 54 68 69 73 20 69 73  20 62 65 63 61 75 73 65  | This is because|
00002130  20 73 6f 6d 65 20 6f 74  68 65 72 20 74 65 6c 65  | some other tele|
00002140  74 65 78 74 0d 61 64 61  70 74 65 72 73 20 75 73  |text.adapters us|
00002150  65 20 6c 65 73 73 20 76  65 72 73 61 74 69 6c 65  |e less versatile|
00002160  20 74 65 6c 65 74 65 78  74 20 72 65 63 65 70 74  | teletext recept|
00002170  69 6f 6e 20 63 68 69 70  73 2c 20 61 6e 64 20 69  |ion chips, and i|
00002180  74 20 69 73 20 6e 6f 74  0d 70 6f 73 73 69 62 6c  |t is not.possibl|
00002190  65 20 74 6f 20 69 6d 70  6c 65 6d 65 6e 74 20 6d  |e to implement m|
000021a0  75 6c 74 69 70 6c 65 20  73 69 6d 75 6c 74 61 6e  |ultiple simultan|
000021b0  65 6f 75 73 20 70 61 67  65 20 67 72 61 62 62 65  |eous page grabbe|
000021c0  72 73 2e 20 54 68 69 73  20 69 73 20 61 0d 72 65  |rs. This is a.re|
000021d0  73 74 72 69 63 74 69 6f  6e 20 6f 66 20 74 68 65  |striction of the|
000021e0  20 68 61 72 64 77 61 72  65 2c 20 61 6e 64 20 63  | hardware, and c|
000021f0  61 6e 6e 6f 74 20 62 65  20 6f 76 65 72 63 6f 6d  |annot be overcom|
00002200  65 20 69 6e 20 73 6f 66  74 77 61 72 65 2e 0d     |e in software..|
0000220f
11-09-88/F\INFO.m0
11-09-88/F\INFO.m1
11-09-88/F\INFO.m2
11-09-88/F\INFO.m4
11-09-88/F\INFO.m5

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