KB84135
Published: January 7, 2016
Revision: 1.0

PAC Control: Unusual behavior when debugging string tables with non-printable ASCII characters


Applies To:

PAC Control Basic
PAC Control Professional

Versions Affected:

Issue affects: All versions


Symptoms:

When inspecting string tables using the ASCII string view in PAC Control Debug mode, you may experience unusual behavior when the string table contains non-printable ASCII characters. Examples of non-printable ASCII characters include:

  • Null (NUL; HEX: 00)
  • Escape (ESC; HEX: 1B)
  • Cancel (CAN; HEX: 18)
Note that this issue is apparent only in the ASCII string view; the data appears normally when you use the Hex string view.

The following images demonstrate behaviors that have been reported.
Index 0 contains ABC~°± Null
Index 1 contains Null ABC~° 
Index 2 contains A Escape B Null Cancel C
Index 3 contains ~°± Escape Cancel

Hex String View:


ASCII String View:


Note that any characters following the Null character become invisible in ASCII string view.

Workaround:

To view or edit string tables containing non-printable ASCII characters, use the Hex string view.

Resolution:

Opto 22 is investigating this issue.

Questions?

Contact: Opto 22 Product Support.
Phone: 800-835-6786 or 951-695-3080
Email: support@opto22.com


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