SD2IEC is a hardware mass storage device using an SD/MMC card and interfacing with the IEC bus. It is based on the ATmega644 microcontroller from the Atmel AVR microcontroller family.

The most prominent use of SD2IEC is emulation/replacement of a Commodore-1541 disk drive for a C64. Hardware and the microcontroller’s firmware is available as open source (GPL).

Changelog:

2010-08-02 – release 0.9.3

• Bugfix: Extension hiding works again with names >12 characters.
• Bugfix: Increase data hold time during standard TALK.
• Testing aid: card detect-to-LED function.

source: sd2iec.de gitweb forum thread c64-wiki

Realms of Quest III is an RPG game for Commodore VIC20.

Enter Realms of Quest III, the computer game that offers you the chance to assemble a party of six adventurers who undertake heroic acts in a vast world of deep dunjons to explore…

source: psytronik software

My SIO2SD interface is dead (without any valid reason) after 2-3 hours of playing demos/games.

I have tried to reprogramming the firmware with a STK500 USB ISP Programmer and the tools AVRDUDE and it has worked perfectly.

CBM-Command is a disk manager for the Commodore 64 / Commodore 128 / Commodore VIC20 / Commodore C16 computers. It is written like Norton Commander or Midnight Commander, but is much simpler due to the target platforms. Both the C128/C64/VIC20/C16 have their own native version of the application.

Release Notes – 2010-07-27 – Version 1.6

New Features:

• None.

Changes:

• (All) Fixed major bug causing directory corruption when using the select all hot key to initiate file copy operations.
• (All) New progress bar that updates more frequently and is more meaningful to view.

Known Issues:

• Screen corruption when viewing a drive with no disk in it.

source: cbmcommand.codeplex.com