[bios] Commodore Plus-4 (europe) (r4) Site

Technical specifications and checksums for this BIOS are maintained by preservation projects like ScreenScraper to ensure the integrity of retro computing archives. Commodore Plus/4 spare parts | Repair & personalization

The piece refers to the revision 4 (R4) system ROM for the European (PAL) version of the Commodore Plus/4 home computer . This BIOS contains the essential code for the machine to boot, handle basic input/output, and manage the integrated "3-Plus-1" software suite. Technical Details System: Commodore Plus/4 (TED series). Region: Europe (PAL). Version: Revision 4 (R4).

Used by enthusiasts to replace failing original ROM chips or to upgrade older revisions to the more stable R4 version.

Software like VICE (Versatile Commodore Emulator) requires this specific ROM file to accurately simulate the hardware behavior of a European Plus/4.

The ROM image is typically distributed as a ZIP file containing the binary data (approx. 46.82 KB). Identifiers: CRC: EAC6921B. MD5: 4C8214A04E03FB9D6127F1578E4A39B6. Purpose and Usage This BIOS is used primarily in:

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