GAMES PACK 1

Details Year: 1980 ROM: 4K RAM: 1K Cost: £10.00 Downloads Program files

1. Three Towers 5. Hurkle 2. Number Guessing 6. Nim 3. Mastermind 7. Symbol Simon 4. Sketcher

PROGRAM NOTES

• Only 5 of the 7 programs are available.
• The programs were recovered from backup copies and so are probably not byte perfect copies of the originals.
• A game entitled Hurkle appears on the ZX80 Companion Pack and might be the same program.

ADVERTS

Personal Computer World February 1981

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GAMES PACK 2

Details Year: 1980 ROM: 4K RAM: 1K Cost: £10.00 Downloads Program files

1. NineLives 5. Chinese Puzzle 2. The Maze Game 6. Tower Of Hanoi 3. Plain Sailing 7. Battleships 4. Noughts & Crosses

PROGRAM NOTES

• Only 1 of the 7 programs is available.
• The program was recovered from a backup copy. The program listing has been recovered but the file is not a perfect byte copy of the original.
• A game entitled The Maze Game appears on the ZX80 Companion Pack and might be the same program.

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GAMES PACK 3

Details Year: 1980 ROM: 4K RAM: 2K-4K Cost: £10.00 Downloads Audio Announcements Program files

1. Fruit Machine 3. Zombies 2. Four-In-A-Line

PROGRAM NOTES

• The programs were recovered from what appears to be a tape-to-tape backup and so are likely to be byte perfect copies of the originals.
• The end of the Zombies had been overwritten and so only the first half of the program listing could be recovered. As a result, the game will not run properly.
• Each program is preceded on the cassette with an audio description of it.
• A version of Four-In-A-Line also appears on the ZX80 Companion Pack.

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UTILITY PACK 1

Details Year: 1980 ROM: 4K RAM: 1K Cost: £10.00 Downloads Program files

1. Memory Display 3. Renumber 2. Hex Code Monitor 4. Memory Search

PROGRAM NOTES

• The programs were recovered from backup copies and so are probably not byte perfect copies of the originals.
• A version of Memory Display also appears on the ZX80 Companion Pack.

Program	Summary
Memory Display	RUN to start the program. Enter an address in hex and the bytes from those locations are displayed. Press Newline for the next page of locations or Z to quit.
Hex Code Monitor	RUN to start the program. Enter E to begin editing memory locations. Enter the editing address in hex and then for each location displayed enter the new byte in hex. To run the entered machine code program enter G.
Renumber	GO TO 1 to start the program. Enter an address in decimal to relocate the utility to. Delete the relocator program by typing each line number, then enter your own program. To renumber your program enter USR(address). The program will be renumbered in steps of 10.
Memory Search	RUN to start the program. Enter the number of bytes in the pattern to be found in memory, followed by whether to search for 'H'ex, 'C'haracters or 'D'ecimal. Then enter the pattern to search for and finally the address (in decimal) to start searching from. The memory will be searched for the specified pattern of bytes.

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ZX80 COMPANION PACK

A cassette of ten programs accompanying the book The ZX80 Companion.

Details Year: 1980 ROM: 4K RAM: 1K-2K Cost: £4.95 Downloads Cassette photos Audio Announcements Program files

1. Number Guessing Game   6. Spelling Quiz 6. Large Character Display   7. Graph Plotter 3. Moving Display Routine   8. Hurkle 4. Pattern Recognition   9. 4-In-A-Line 5. Memory Display 10. The Maze Game

PROGRAM NOTES

• Each program is preceded on the cassette with an audio description of it.
• The programs appear on the following pages of The ZX80 Companion book:
  
  

  Program	Page
  Number Guessing Game	19
  Large Character Display	42
  Moving Display Routine	78
  Pattern Recognition	91
  Memory Display	96
  Spelling Quiz	97
  Graph Plotter	102
  Hurkle	105
  4-In-A-Line	108
  The Maze Game	112