Category: 1541 Ultimate II+
Downloads: 5
zip0 1541 Ultimate 2+ Firmware v3.7

Added features since 1.24

  • Debug stream over Ethernet, which logs CPU / VIC access real time, also possible to log C64 CPU and 1541 CPU alongside. U64 only.
  • ACIA (MOS 6551) emulation
  • Modem Layer emulation (6551 <-> LAN), supporting both outbound and inbound connections
  • REU load / save commands from UCI, using the preload settings
  • File append mode for Software IEC.
  • Support for SuperGames cartridge
1541-ultimate-ii-plus
Website external 2020-05-14 English Commodore 64 985.3 KB 459 Download
d64 floppy1 1541 Ultimate II+ Firmware v3.1

Release notes Ultimate-II+ v3.1 rev 474:

  • USB fixes:
    • support for sticks that do not reliably reply to the ‘inquiry’ command
    • Byte alignment issue fixed when writing. This caused corrupted G64s to be written sometimes
    • Support for composite devices added
    • Added support for USB keyboards, to navigate the Ultimate browser menu
  • Incorporated patches from Markus & Henning, including, but not limited to:
    • Audio squeal fix, speaker volume addition
    • Ultimate DOS V1.1 with added commands
    • Added Home Directory support
    • Added support for GeoRAM
  • IEC fixes:
    • IEC now operates properly on the bus, when it is alone (disabled 1541 drives)
    • IEC filename fixes; saving a file to IEC adds the right extension and also removes the extension when loading directory
    • IEC should now work with JiffyDOS  (not yet supporting the JiffyDOS protocol)
  • UltiCopy is working again!
  • Small fix in TCP support (TCP hangup on retransmission)
  • Other small fixes:
    • Save disk twice bug fixed
    • Fixed load errors on tape adapter cable with some USB 3.0 cables
    • Keyboard “racekeys” fixed
    • Reduced Link Up time for the Ethernet port
    • Ultimax mode ROMs now allow video data in ROM
ultimate642
2017-04-06 English Commodore 64 918.29 KB 703 Download
zip2 1541 Ultimate II+ Firmware v3.6

General Usability and Compatibility:

  • Added possibility to load / save and reset configuration settings.
  • Added the possibility to have temporary configuration settings.
  • Improvements to the 6502 CPU for improved 1541 compatibility.

Improvements to SID player:

  • Built-in SID player now supports MUS files as well (including stereo tunes) Music files can be found here: http://www.c64music.co.uk/
  • Added support for toggling screen on/off in Sidplayer with S key.
  • Added support for song length in SID header.
  • Fixed correct SID model selection for SIDFX boards .

Various other bug fixes:

  • Copying a file from a container now restores extension.
  • Fixed issue of copying file from .t64 files.
  • Added ‘Enter’ option for .t64 files.
  • User Interface improvements / fixes.
  • Fixed telnet connection – removing header upon connect (fixes random copy actions)
ultimate641
2019-10-20 English Commodore 64 991.43 KB 458 Download
zip3 1541 Ultimate II+ Firmware v3.6a
  • General Usability and Compatibility

    • Added possibility to load / save and reset configuration settings
    • Added the possibility to have temporary configuration settings
    • Improvements to the 6502 CPU for improved 1541 compatibility
  • Improvements to SID player
    • Built-in SID player now supports MUS files as well (including stereo tunes)
    • Added support for toggling screen on/off in Sidplayer with S key.
    • Added support for song length in SID header.
    • Fixed correct SID model selection for SIDFX boards
  • Various other bug fixes
    • Copying a file from a container now restores extension
    • Fixed issue of copying file from .t64 files
    • Added 'Enter' option for .t64 files
    • User Interface improvements / fixes
    • Fixed telnet connection - removing header upon connect (fixes random copy actions)
    • Changed default hostname to match target
ultimate640
2020-03-02 English Commodore 64 977.13 KB 449 Download
zip4 Quick Guide to the 1541 Ultimate II+

Quick Guide to the 1541 Ultimate II+

quick-guide-1541-ultimate-IIplus
2019-09-17 English PDF 702.53 KB 564 Download
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