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:

2010-10-16 – release 0.10.0pre3

• Bugfix: Wheels 128 loader detection fixed.
• Bugfix: G-P answer fixed.
• Bugfix: Strip 0x0d from file names when appropiate.
• Wheels support.

source: sd2iec.de gitweb forum thread c64-wiki

Manosoft has released a new version of his C64SD.

The Italian developer Damiano Colombari based the C64SD design on the already existing SD2IEC solution.

The major differences from the previous one are the aluminum box and a female IEC connector for connect external Floppy Drive or other devices.

Click here for the Video Demostration.

source: c64sd.roxer.com c64wiki sd2iec c64wiki sd2iec firmware

The Pocket 1541 is a emulator for the 1541 disk drive. Pocket 1541 uses a SD card to store your data, supported formats are: D64, M2I, PRG, D71, D81 and P00.

The firmware is based on the open source SD2IEC firmware. The device has four buttons and a LCD screen that can be used to navigate to the required files on the SD card.

source: commodore-gg.hobby.nl pocket 1541 homepage

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:

2010-08-06 – release 0.10.0pre1

• GEOS 2.0 support (d64/d71/d81 images only)
• File-based M-R emulation.
• Removed “oldnkc” configuration.

source: sd2iec.de gitweb forum thread c64-wiki

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

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:

2010-06-21 – release 0.9.2

• Bugfix: Rename was broken on FAT.
• Turbodisk is now disabled when running on internal RC clock.
• Button debounce timeout increased.

source: sd2iec.de gitweb forum thread c64-wiki

Autopsy:

For a new review see the italian version of this article.

from C64Scene Homepage: This project is interesting not only because it’s another mass-storage solution but because it combines already existing solutions to a new and fresh product. Damiano has always followed all the Commdore related websites and forums especially concerning the MMC and SD2IEC projects.

That’s when he got the idea to build a solution for which one doesn’t need soldering, wire cutting or the IEC cable. C64SD utilizes the Datasette connector to power the SD2IEC circuit. An IEC connector connects right into the IEC port.

The whole module stand vertical along the back of the C64 (or VIC20). The module is fitted with two rather large buttons, one reset and one diskswap/multi-function button.

SD-CARD Tested:

SANDISK SD-CARD 2GB = 100% WORKING.
CORSAIR SD-CARD 512MB = 100% WORKING.

source: c64sd.roxer.com c64wiki sd2iec c64wiki sd2iec firmware

from c64scene.com Homepage:

Manosoft reached a version 2 milestone with his new mass-storage project, C64SD. The Italian developer Damiano Colombari based the C64SD design on the already existing SD2IEC solution.

This project is interesting not only because it’s another mass-storage solution but because it combines already existing solutions to a new and fresh product.

Damiano has always followed all the Commdore related websites and forums especially concerning the MMC and SD2IEC projects. That’s when he got the idea to build a solution for which one doesn’t need soldering, wire cutting or the IEC cable.

Read more…

Sorry, this entry is only available in Italian.

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:

2010-03-07 – release 0.9.1

• Bugfix: Filling unused REL records used wrong offsets.
• Bugfix: Unbreak case-insensitive matching of FAT file names.
• Bugfix: Fix raw directory mode for D64/D71/D81.
• Bugfix: Tell the display about REL files too.
• Add preliminary support for the ATmega1284P.

source: sd2iec.de gitweb forum thread c64-wiki

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:

2009-02-28 – release 0.9.0

• Bugfix: REL offset calculation for records 256,512,…
• Bugfix: Non-REL P command parameters now match README.
• Bugfix: Reading after EOI behaves correctly now.
• Red LED only active while unwritten data in memory.
• Remove XC,XJ commands.
• New fastloader: ULoad Model 3.
• New fastloader: G.I. Joe (said to be commonly ripped)
• New fastloader: Epyx FastLoad cartridge.
• Support reading raw directory ($ with secondary > 0)
• “display disk images as directories”-mode.
• DNP support.
• Remote display support.
• Build system doesn’t require gawk anymore.

source: sd2iec.de gitweb forum thread c64-wiki

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:

2009-12-16 – release 0.8.3

• Bugfix: Really prevent random corruption on FAT32 media.
• Bugfix: Free buffer after copying files.

source: sd2iec.de gitweb forum thread c64-wiki

Click here to jump to the M2i c64 games website. The file estension M2i is used by the SD2Iec interface.

Sorry, this entry is only available in Italian.

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:

2009-09-27 – release 0.8.2

• Bugfix: Prevent random storage corruption on FAT32 media.
• Bugfix: Image files not mountable if read-only file or media.
• Bugfix: Do not clear error channel if sec. 15 is closed.
• Add a dummy RTC read during init (to update year if required).
• Enable I2C RTC support in LarsP configuration for Final Expansion 3.
• Acknowledge ATN during initialisation to stall C64 if required.

source: sd2iec.de gitweb forum thread c64-wiki