(registered 2026-06-23, last updated 2026-06-23)

Media type name: application

Media subtype name: vnd.supercard-pro-disk-image

Required parameters: N/A

Optional parameters: N/A

Encoding considerations: binary

Security considerations: SuperCard Pro (SCP) disk images can store the same data as a real floppy disk. That means they may contain arbitrary content, including but not limited to active content. Thus if the users do not trust the contents of the disk image, they should carefully check the contents first before using it (e.g. with a suitable anti-virus software to check for known malicious software).

The SCP format also does not provide privacy or full integrity protection, so if these protections are desired they must be applied externally.

Interoperability considerations: There are multiple versions of the file format. Applications that have been written by using an older version of the specification might be (partly or fully) unable to use SCP disk images that have been created by another application which used a newer version of the specification.

Published specification: https://www.cbmstuff.com/downloads/scp/scp_image_specs.txt

Applications which use this media: The SCP file format is used by floppy disk preservation tools and various emulators of old computers that used such floppy disks.

Fragment identifier considerations: N/A

Restrictions on usage: N/A

Additional information:

1. Deprecated alias names for this type: N/A
2. Magic number(s): 0x53 0x43 0x50 at byte position 0 - 2 (i.e. the ASCII letters "SCP")
3. File extension(s): .scp
4. Macintosh file type code: N/A
5. Object Identifiers: N/A

Person to contact for further information:

1. Name: Thomas Huth
2. Email: huth&tuxfamily.org

Intended usage: COMMON

SCP files are usually created by disk preservation tools like the software that is used to drive the "SuperCard Pro" hardware. The SCP files contain the low-level flux data of the disk and thus can be used to fully preserve the contents of a floppy disk. These files then can be used to create a copy of the original disk, or they can be used in emulators for providing the floppy disk contents to the emulated system.

Author/Change controller: Thomas Huth, on behalf of CBMSTUFF.COM