Downloads - Acorn Electron
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  A selection of programs for the Acorn Electron and Elkulator.  
Disc and tape images plus listings.
These are available in a zip file containing .adf disc image for ElectrEm, .ssd image for Elkulator, .uef tape image and a BASIC listing which can be typed in on a real Electron. Alternatively, a separate pdf file of the listing can be downloaded.
The programs have been adapted from other computers and as such they don't represent good examples of Electron programming, particularly as they don't use procedures.
There is a compilation disc with all the programs at the bottom of this page.
 
  Any Month Calendar  
Description: View the calendar for any month, any year. To change the month, press "m" and enter a number from 1 to 12. To change the year, press "y" and enter a number from 1 to 9999. Press RETURN to display the new calendar. To scroll backwards by one month, press "<" and to scroll forwards, press ">".
Months prior to September 1752 are in the Julian calendar and months after September 1752 are in the Gregorian. These are the calendars in force in England at its colonies. Other countries changed at different times between the 16th and 20th centuries.
Author: Bob Mockford
File name: MONTHS
Downloads: (1) ZIP File: Disk Images (.adf .ssd) + Tape Image (.uef) + Listing (.pdf) (2) Listing (.pdf)
 
  Awale  
Description: Classic African game. Each player in turn takes the contents of one of his or her positions and distributes them round the board. If the final one is placed in one of the opponent's positions and that now holds two or three, the player takes the contents. The first to reach or pass 25 wins. Play the computer or another person. Choose who plays first. A game can be abandoned by pressing "q". Test mode allows you to set up a situation or to restart a game from a known position.
To fit the Electron's memory this program is in black and white. A colour version is available here for Elkulator with the Slogger/Jafa Master RAM board selected in Hardware > Memory.
Author: Bob Mockford
File name: AWALE
Downloads: (1) ZIP File: Disk Images (.adf .ssd) + Tape Image (.uef) + Listing (.pdf) (2) Listing (.pdf)
Downloads: (3) About Awale (.pdf)
 
  Battleships  
Description: Place your 10 ships on your 8 x 8 grid and the Electron will do the same. The first to find all of the opponent's ships wins. Hits and misses are displayed. If you lose, the Electron's remaining ships are revealed.
Locations can be entered either way round, B5 is the same as 5B.
 
Author: Bob Mockford
File name: BATTLE
Downloads: (1) ZIP File: Disk Images (.adf .ssd) + Tape Image (.uef) + Listing (.pdf) (2) Listing (.pdf)
 
  Day Finder  
Description: Enter any date from 1AD to 9999AD to find out what day of the week it is or was.
The program chooses the Julian or Gregorian calendar according to the date on which England (and its colonies) changed in September 1752.
 
Author: Bob Mockford
File name: DAYDATE
Downloads: (1) ZIP File: Disk Images (.adf .ssd) + Tape Image (.uef) + Listing (.pdf) (2) Listing (.pdf)
 
  Decimal and Hexadecimal Conversion  
Description: Convert decimal numbers (1 to 65535) to hexadecimal and hexadecimal numbers (1 to FFFF) to decimal.
 
 
 
Author: Bob Mockford
File name: HEX-DEC
Downloads: (1) ZIP File: Disk Images (.adf .ssd) + Tape Image (.uef) + Listing (.pdf) (2) Listing (.pdf)
 
  Digitz  
Description: Guess a four-digit number. You get feedback on which digits match, if any.
Right tells you how many digits are in the right position, wrong shows you how many are in the wrong position. So if the number was 1234 and you entered 0134, you would have two right (3 and 4) and one wrong (1). You have up to ten guesses before the number is revealed.
Author: Bob Mockford
File name: DIGITZ
Downloads: (1) ZIP File: Disk Images (.adf .ssd) + Tape Image (.uef) + Listing (.pdf) (2) Listing (.pdf)
 
  Egyptian Arithmetic  
Description: From an article by Didier Heroux in l'Ordinateur Individuel discussing an ancient Egyptian method of multiplying by halving, doubling and adding.
This program suggests a possible solution to the problem of multiplying while only knowing your two-times table. Having written it, I thought it would be interesting to investigate a method of dividing by adding and subtracting . I've included decimal places which would, of course, not have been available. Other solutions will be possible.
Author: Bob Mockford
File name: EMATHS
Downloads: (1) ZIP File: Disk Images (.adf .ssd) + Tape Image (.uef) + Listing (.pdf) (2) Listing (.pdf)
 
  Higher or Lower  
Description: Guess whether the next number will be higher or lower.
Numbers ranging from 1 to 15 appear on the screen and all you have to do is guess whether the next will be higher or lower. Enter H for higher or L for lower. Each number only appears once in a sequence. A game for two players, one of which can be the computer.
Author: Bob Mockford
File name: HIGHLOW
Downloads: (1) ZIP File: Disk Images (.adf .ssd) + Tape Image (.uef) + Listing (.pdf) (2) Listing (.pdf)
 
  Pyramid Box Game  
Description: Sixteen boxes contain from 1 to 7500 points, distributed at random. Pick a box at the start of the game and choose whether to keep it or swap it as you are offered other boxes. When you get down to the last two boxes, the one you choose is opened to reveal your winnings. Up to four can play, any of them can be the computer (enter E for Electron as the player's name or leave it blank). Play as many games as you like.
Press a key A to L for your first box, then K to keep it or S to swap when asked. At the end of the game, enter A to play again with the same players adding to current scores, R to start again with different players, X to exit.
Author: Bob Mockford
File name: BOXGAME
Downloads: (1) ZIP File: Disk Images (.adf .ssd) + Tape Image (.uef) + Listing (.pdf) (2) Listing (.pdf)
 
  Random Numbers  
Description: Get up to 20 random numbers from 1 to 99. Select the range and whether you want duplicates. The numbers are selected and then displayed, in numerical order if desired.
 
 
Author: Bob Mockford
File name: RANDOM
Downloads: (1) ZIP File: Disk Images (.adf .ssd) + Tape Image (.uef) + Listing (.pdf) (2) Listing (.pdf)
 
  Rock Scissors Paper  
Description: Play up to 10 games at a time against the computer - rock breaks scissors, scissors cut paper, paper wraps rock. Enter your choice (3 rock, 2 scissors or 1 paper).
 
 
Author: From a Creative Computing program for the Commodore PET.
File name: ROSCPA
Downloads: (1) ZIP File: Disk Images (.adf .ssd) + Tape Image (.uef) + Listing (.pdf) (2) Listing (.pdf)
 
  The 23 Game  
Description: The 23 match game. Each of two players (you and the computer) take turns to remove 1,2 or 3 matches from a pile of 23. The aim is to leave the other player to take the last match and so lose.
There is a strategy to this game, the computer knows what it is. The game demonstrates how knowing the rules when your opponent doesn't gives you a great advantage. See if you can work out how the computer plays and increase your chances of winning.
Author: From a Commodore PET program by Creative Computing, Morristown, New Jersey.
File name: 23GAME
Downloads: (1) ZIP File: Disk Images (.adf .ssd) + Tape Image (.uef) + Listing (.pdf) (2) Listing (.pdf)
 
  The 23 Game for 2  
Description: The 23 match game. Each of two players takes turns to remove 1,2 or 3 matches from a pile of 23. The aim is to leave the other player to take the last match and so lose.
There is a strategy to this game. The game demonstrates how knowing the rules when your opponent doesn't, gives you a great advantage.
Author: Bob Mockford. From a Commodore PET program by Creative Computing, Morristown, New Jersey.
File name: 23FOR2
Downloads: (1) ZIP File: Disk Images (.adf .ssd) + Tape Image (.uef) + Listing (.pdf) (2) Listing (.pdf)
 
  Compilation disc image  
Description: All the programs* on one disc image.
Use Shift / Break (Shift / F12 on a pc) to load the menu and select a program by its letter.
 
 
 
Downloads: (1) ZIP File: Disk Images (.adf .ssd)
* Does not include the colour version of Awale.
 
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