I have found some Firmware Roms of vintage Disk Backup System for Super Nintendo and Megadrive.

Inside the archive:

• Super Wildcard v2.7 (snes)
• Magicom v3.2h (snes)
• Super Magic Drive v4.1-a (megadrive)

Download: Disk Backup System Roms

Sorry, this entry is only available in Italian.

1541 Ultimate Firmware v1.7 Beta Features:

• The freezer has been made more robust. (Needs more testing)
• Minor fixes in the IEC interface. (but not yet satisfactory)
• SID player has been added.
• Epyx Fastloader cartridge has been added.
• Support for custom carts has been added (8K/16K, as well as existing carts)
• Support for (custom) Ocean and System3 cartridges added.

source: 1541ultimate.net

This beta release of the 1541-III firmware holds lot’s and lot’s of new features. But the most important feature of it all also makes it the most useable version of all 1541-III firmware releases. Why, because it supports JiffyDos. JiffyDos consists of a fastloader that makes all disk acces much and much faster. Making the use of your precious commodore much more fun.

For those who are not familiar with the JiffyDos, just google, otherwise, thrust me. It’s really usefull. JiffyDos speeds up ALL your diskacces. Programs or games without a fastloader used to be slow… but suddenly they become as fast as… “greased lightning!!!”. So enough about JiffyDos.

Why is this release a beta release,  simply because this release holds a lot of changes made to the 1541-III’s firmware, very crucial changes. Most changes are not noticed by the user, and some are never used. But I won’t go into detail.

This release is usefull for those who want to test JiffyDos on the 1541-III. And it needs to be tested. Because it will contain bugs, therefore we need to have it tested by YOU, so YOU can make a list of programs/files that works/fails. If you can supply it with a decent description it helps us in developing/fixing the bugs. Making it into a stable release.

source: jderogee.tripod.com

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

1541 Ultimate Firmware v1.7 will be released very soon!

Firmware v1.7 will include:

• Fully functional SID player.
• Some new cartridges.
• Support for loading your own cartridge from SD.
• Freezer problem has been addressed and fixed.

source: 1541ultimate.net

This beta release of the 1541-III firmware holds lot’s and lot’s of new features. But the most important feature of it all also makes it the most useable version of all 1541-III firmware releases. Why, because it supports JiffyDos. JiffyDos consists of a fastloader that makes all disk acces much and much faster. Making the use of your precious commodore much more fun.

For those who are not familiar with the JiffyDos, just google, otherwise, thrust me. It’s really usefull. JiffyDos speeds up ALL your diskacces. Programs or games without a fastloader used to be slow… but suddenly they become as fast as… “greased lightning!!!”. So enough about JiffyDos.

Why is this release a beta release,  simply because this release holds a lot of changes made to the 1541-III’s firmware, very crucial changes. Most changes are not noticed by the user, and some are never used. But I won’t go into detail.

This release is usefull for those who want to test JiffyDos on the 1541-III. And it needs to be tested. Because it will contain bugs, therefore we need to have it tested by YOU, so YOU can make a list of programs/files that works/fails. If you can supply it with a decent description it helps us in developing/fixing the bugs. Making it into a stable release.

source: jderogee.tripod.com

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:

2009-05-24 – release 0.8.1a

• Fix bootloader version number generation.

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:

2009-05-20 – release 0.8.1

• Fix uIEC/IDE SD card change detection.
• Dreamload support for uIEC.
• Mark the RTC time as valid after setting the clock.
• Delay SPI initialisation until absolutely required.
• Show disk change confirmation even when the error blink is active.
• Exit the FC3 fastloader if ATN is active.
• Fix indentation of 1000+ block files.
• Remove 0-byte from the long version message.
• Fix multiple save-with-replace bugs.
• Ignore directories when matching file name wildcards.

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:

2009-03-20 – release 0.6.7a

• Unknown.

source: sd2iec.de gitweb forum thread

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:

2009-03-08 – release 0.8.0

• Direct sector access of the real storage device
• Ignore DEL files in file_open
• Drive mapper
• EXOS V3 fastloader support
• Requires avr-libc 1.6.x

2009-03-07 – release 0.6.7

• Bugfix: Close previous file if secondary is reused without close
• Bugfix: Minor Jiffy timing fix on EOI

source: sd2iec.de gitweb forum thread

The annoying bug in the firmware that had rendered the Ethernet interface almost useless has finally been fixed.

In comparison to 1.5, the following has been fixed:

• Reads from the Ethernet chip have been fixed. The unit now correctly receives packets.

download: 1541U Homepage

SD2Iec – is a hardware mass storage device using an SD/MMC card and interfacing with the IEC bus.

Changelog:

2008-10-02 – release 0.8.0pre1

• Implement Dreamload emulation.
• RTC support.
• Dataflash support.
• Multi-file scratch.
• Copy command.
• Large buffer support.
• Final Cartridge 3 freezed file fastloader support.
• D71/D81 disk image support.
• Parse FSINFO sector for faster FAT32 free space calculation.
• Partial REL file support.

download: sd2iec.de

source: gitweb forum thread