Switchless 8x Multi-Floppy Speeder 32KB RAM extension

[Blacklord]

Frank Eggen's Switchless 8x Multi-Floppy Speeder 32KB RAM extension (DolphinDos 3) for the C128DCR and the internal 1571 floppy drive has been released on Github. Documentation, schematics, Gerber files, Kernal ROMs and logic files are available there. So everyone can rebuild this project.

This project is a further development of the very fast and popular DolphinDos3 for the C128 and the 1571 floppy disk drive. It uses the best of the retro world and the technology of the present and has never been available before. Switchless 8x Multi-Floppy-Speeder not only runs with DolphinDos 3 but can also run up to 8x DOS Kernals and C128/C64 Kernals and can be conveniently activated via DOS commands. This means that JiffyDOS 128, for example, can also be run alongside the original CBM-Dos and DolphinDos 3. This ensures maximum compatibility. The 32KB RAM extension is organized in 4x 8KB banks and, together with the Peripheral Interface Adapter (PIA, type 6821 or 6521), enables ultra-fast parallel data transfer and control of the 4x 8K RAM banks (32KB).

The Switchless 8x Multi-Floppy Speeder with 32 KB RAM extension for the Commodore C128DCR is one of the universally applicable accelerators for the internal 1571 floppy disk drive of the C128DCR.

In addition, the "Switchless 8x Multi-Floppy Speeder" is fully RAMBoard-compatible, which enables the use of corresponding nibble copy programs that support RAMBoard.

FraEgg / commodore-c128dcr-1571-switchless-floppydrive-8x-multi-floppy-speeder