RapiDOS professional is a floppy speeder based on the Professional DOS by Klaus Roreger. More information on Professional DOS can be found at : http://www.d81.de/ProfessionalDOS/ and http://ar.c64.org/wiki/Category:Professional_DOS

RapiDOS was sold in the US by Chip Level Designs with kernel code written by Lawrence Hiller (aka Mr.Nike). Mitch/ESI gave ideas and feedback to the code resulting in RapiDOS having lots of “hacker enhancements” over Professional DOS, for example the built in monitor. It also functions on PAL (50Hz) Machines.

On this page you will find pictures of the RapiDOS hardware. The ROMs are also available for download.

Thanks to Mitch / ESI for information and for the hardware/ROMs !

 
Update: Added a .pdf with all reviews and advertisements regarding RapiDOS from Ahoy/Info/Gazette Magazines. Thanks to Stone Oakvalley for the information 🙂

Interesting to note is that Compute Gazette Issue 51 (1987-09) has an advertisement saying RapiDOS is “soon coming” and in Issue 54(1987-12) it is available. Later on C128 and CP/M is mentioned to be supported.

 


 

1541 with RapiDOS professional
Drive controller board and the CIA board installed. The wire lead is used for switching the RapiDOS on and off through the User-port board.

 


RapiDOS Professional User-port Board.
Switch to the left turns on/off the RapiDOS in both the C64 and the 1541.


C64 ROM Adaptor board

[No picture available]
The C64 ROM Adaptor board has a wire lead connected to the User-port board.

 


More pictures of RapiDOS Professional.