This is DualDriveBurstBackup - a parallel cable copier designed for dual drive use.

Here is how you build it for one drive: http://sta.c64.org/cbmpar.html

Interface is simple - connect wires from the two cables each to each. As for my knowledge this is the fastest copier ever. I mean real time of copying, it is not faster than other burst copiers, but removing necessity of swapping disks saved much more time than fiddling in code in search of missing cycles.

This source is released under GNU GPL license. This is text file for Turbo Assembler Macro. Its extensions (offset assembly for drive code) are used so it cannot be loaded into Turbo Asm v5.x directly.

Maciej 'YTM/Elysium' Witkowiak ytm@elysium.pl 06.03.1998, 29.07.2001, 2014