VERIFY: Your Program's Proofreader

VERIFY: Your Program's Proofreader

Just saved your latest Commodore 64 masterpiece and want to make sure it's safe and sound? The VERIFY command is here to be your program's meticulous proofreader! This handy tool compares the program you just saved on tape or disk with the version still in your C64's memory, ensuring a perfect match and giving you peace of mind. Think of it as your code's insurance policy against data corruption!

Syntax

Cassette:

VERIFY ["<filename>"] [, <device number>]

Disk:

VERIFY "<filename>", <device number>

Where: - <filename> (Optional for cassette): The name of the program file you want to verify. - <device number>: - 1: Cassette tape drive - 8: Disk drive

Applications

The VERIFY command is crucial for:

  • Ensuring data integrity: Confirm that your saved program is identical to the one in memory, especially important for long or complex programs.
  • Detecting errors: If there's a mismatch, it could indicate a problem with the save process or the storage media itself.
  • Building confidence: Get reassurance that your valuable code is stored correctly and won't surprise you with unexpected errors when you load it later.

Code Examples

1. Verifying a Cassette Save:

10 SAVE "MYPROGRAM"        :rem Save the program to tape
20 VERIFY "MYPROGRAM"      :rem Verify the saved program

(Remember to rewind the tape to the correct position before verifying.)

2. Verifying a Disk Save:

10 SAVE "MYPROGRAM",8     :rem Save the program to disk
20 VERIFY "MYPROGRAM",8   :rem Verify the saved program

VERIFY in the Wild: The Software Quality Assurance Tester

Imagine you're a software developer working on a large project for the Commodore 64. The VERIFY command is like your quality assurance team, meticulously checking each saved file to ensure that it matches the original code and meets the highest standards.

Don't leave the safety of your saved programs to chance! With VERIFY, you can be confident that your code is stored correctly and ready to be loaded and run without unexpected surprises. It's a simple yet essential step in the software development process, providing a final layer of protection for your valuable creations. So make VERIFY a part of your Commodore 64 workflow and ensure your code is always safe and sound!

Important Note: VERIFY is not a foolproof method for detecting errors, but it's a valuable tool for catching common issues like write failures or corrupted media. Remember to always back up your important data!

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Commodore 64 startup screen
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