Ahoy!’s Bug Repellent v2 (Kleinert & Barron)

Title – Bug Repellent (V2)
System – Commodore 64
Author –Michael Kleinert and David Barron
Publication – Ahoy! Magazine, June, 1984 – April, 1987
Page Scans – 1 2
Preserved by – eboy71
Recommended Emulator – VICE

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Download ROM

Loading the Game –

• Mount the disk image (ahoy utilities.d64) in your emulator. In VICE, this is done by selecting File → Attach Disk Image
• Load the app by typing LOAD”BUG REPELLENT V2”,8
• Once loaded, type RUN to start

Article Text & Instructions:

The program listed below will allow you to quickly debug any Ahoy! program you type in on your C-64.

Type in and save the Bug Repellent program. Type NEW, then type in the Ahoy! program you wish to check. When that’s done. save your program (don’t run It!) and type SYS 49152 RETURN. You’ll be asked if you want the line value codes displayed on the screen or dumped to the printer. If you select screen, it will appear there.

The table will move quickly, too quickly for most mortals to follow. To pause the listing, depress and hold the SHIFT key. To pause for an extended period, depress SHIFT LOCK. As long as it is locked, Ihe display will remain frozen.

Compare the table your machine generates to the table in Ahoy! that follows the program you’ve entered. If you spot a difference, an error exists in that line. Jot down the numbers of lines where contradictions occur, LIST each line, spot the errors, and correct them.

Notes:

• This is the second version of Bug Repellent, and it only works for Ahoy! type-ins published between June, 1984 and April, 1987. Other versions:
• Bug Repellent V1: Used from April – May, 1984
• Bug Repellent V3: Used from May, 1987 onwards