BBC BASIC was 25 years old on 1st August 2006. Acorn Computers and the BBC set the end of July 1981 as the deadline for the completion of the very first version of BBC BASIC, so it would be ready in time for the launch of the BBC Microcomputer later that year. After a period of intensive testing and last minute bug fixing it was finally sent for ROM manufacture in mid-September 1981, with the first masked ROMs arriving from Hitachi in November. To commemorate this auspicious occasion I have featured below some notable applications and achievements of BBC BASIC over the past 25 years. For more background information you can read accounts of the history of BBC BASIC elsewhere on this site, on Wikipedia and in this PC Pro article.
Supplied with every BBC Microcomputer was a Welcome Tape (or Welcome Disc)
containing a set of example programs to show what the machine (and BBC BASIC) was capable
of. Most of these were fairly conventional but one was anything but: the interactive poem
Now Press Return by the Liverpool poet
Roger McGough. This is no ordinary poem because
part of it is left to the reader: each time you come back to it it is different in some way.
The program helps you compose a limerick - you get a choice of characters and, depending on how
you choose, there is a variety of rhymes and a violent ending! Another part of the poem seems
to be never-ending so, when you've had enough, just remember the title...
It's a little known fact that the ARM
processor architecture (initially Acorn RISC Machine) was originally modelled in
BBC BASIC by its designers Steve Furber
and Sophie Wilson. According to
Professor Furber "The fact that [the model] is only about 700
lines of BBC BASIC, whereas in a modern hardware design language such as
VHDL an ARM takes many tens of thousands of lines of code, also tells an
interesting story".
The ARM is now the highest-volume 32-bit (or more) processor in the world by a very large margin (over 1,400,000,000 ARMs were shipped in 2004).
Click here to see a snippet of the original BBC BASIC code.
DualCalc is a Windows program intended to carry out the statutory calculation of APRs (a way of measuring and comparing how good a deal a loan represents) and Rebates on Early Settlement (how much you get back if you end a loan early) for loans regulated by the UK's Consumer Credit legislation - the APR calculations also conform to the EC Directive on Consumer Credit. DualCalc was commissioned by the OFT to be made available, free of charge, to Enforcement Officers, Consumer Advisers, etc. who need to carry out these calculations.
(Brian Stewart, the author of DualCalc, sadly died in 2007 and the program is no longer available from OFT)
SimplEPOS,
written in BBC BASIC for Windows, is a simple to use, yet powerful,
EPOS (Electronic Point Of Sale) package which provides point of sale, stock control and business
management for general retail businesses. It is suitable for everything from single store
family-run setups running with budget equipment to multi-site corporate retail chains.
SimplEPOS has over 120 installations across the UK - a testament to the
success and popularity of the product.
In 1986 Cambridge Dynamics Limited
produced a programmable version of a machine used in the production of power generators for
aeroplanes and helicopters. It twists a complete set of copper 'hairpins' into the complex
3-dimensional shape of the generator stator windings.
Earlier machines had relied on a complex mechanical cam to control the axes; the replacement used hydraulic servos to control the tooling. An industrial version of a BBC model B microcomputer formed the basis of the control system, programmed in BBC BASIC. Conductors for a new design of generator could be produced in hours rather than days or weeks.
20 years later the machine has been refurbished and fitted with a new control system using
BBC BASIC for Windows. Calculation of the servo data that used to take typically 20 minutes
on the original system is now completed in as many seconds!
BBC BASIC for Windows was used to write software for Cardiff-based
Calon TV which analyses the storyboards and animatic timings
for each episode of children's stop-motion animations - such as Hana's
Helpline (broadcast in 2007).
The software sends timing information and custom-generated audio files
to each shooting unit via a network, and provides detailed
information for post-production including the audio mix and picture
grade.
Instat has been used widely in the UK and elsewhere by a range of companies, research
institutes, schools, colleges, universities and private individuals. At The University of
Reading it has been used extensively on training courses run by the SSC and the
School of Applied Statistics. It has also been used in many countries on statistics courses
and on courses related to health, agriculture and climatology.
In 2008 BBC BASIC was used to restore the colour to a vintage television programme
which had survived only as a black-and-white copy.
The Dad's Army episode Room at the Bottom was recorded in colour but the videotape was wiped in the 1970s. Fortunately the programme had been copied onto black-and-white film and the process used had preserved some evidence of the original colour as a pattern of fine diagonal stripes.
A program was written in BBC BASIC for Windows to analyze the pattern and
from it restore the original colours; details of the process can be found
here.
Once the raw colour had been recovered, further
improvements were carried out to restore the programme to a quality
sufficient for it to be broadcast on BBC2 on Saturday 13th December 2008.
