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Home C64 U64/U64Elite/U2/U2+/U2+L v3.10i (Core: v1.42) Firmware Update

U64/U64Elite/U2/U2+/U2+L v3.10i (Core: v1.42) Firmware Update

U64/U64Elite/U2/U2+/U2+L v3.10i (Core: v1.42) Firmware Update

A new version of the firmware for the Ultimate64 (U64/U64E) / U2 / U2+ / U2+L by Gideon is released.

General Fixes:

  • [Important] Fixed ExFAT filesystems with 128kB clusters (Fixes failing D64 mounts from some ExFAT thumbdrives)
  • [Facebook Discussion] EasyFlash save function now saves all chip chunks to support incomplete CRT files
  • [Issue-271] GEORAM at boot (MarkusC64)
  • [Issue-279] Support for 2 MHz operation for any cartridge, including EasyFlash
  • [Issue-246] Fixed: Virtual Printer crashes when file cannot be created.
  • [Issue-234] Deleting last item in directory makes selection invisible
  • [Issue-236] Confirmation modal asking a question only gives ‘OK’ instead of ‘Yes/No’.
  • [Issue-R17] Added mapping of ESC key to RUN/STOP.
  • [Facebook Request] Added: Leave menu on mount (can be selected per drive)
  • [Facebook Bug Report]: Fixed starting Kingsoft Business Basic cartridge
  • [Facebook Bug Report]: Allow Maverick (and others?) to write wrong sector headers on MFM tracks.
  • [Facebook Bug Report]: Unable to select GeoRAM. Is now a mode of the RAM Expansion Unit.
  • [Facebook Bug Report]: Fixed color palette not loaded at boot (U64 only).
  • [Facebook Bug Report]: Fixed USB sticks not recognized
  • [Messenger Report]: Improvements to palette file read. Rejects faulty files. Fixes hang-up
  • [Messenger Report]: Fixes ‘Create DNP’ when run from Telnet. Turned out to be a stack overflow.
  • [Email Discussion]: Adds EEPROM segment to GMOD2 when it is missing in the CRT file

U64 core fixes:

  • Multicolor graphics side border bug (core version V1.41 => V1.42)

Modem fixes:

  • ACIA NMI pulse extension to extend over bad line. This allows the 6502 to see it always.
  • Performance optimization ACIA / Modem
  • Allow spaces after ATDT command.
  • Minor fixes in the modem emulation layer from Scott Hutter (xlar54)

Cartridge Support:

  • [Issue-314] Added support for Blackbox V9.
  • Additional C128 cartridge variant that allows banking and offers some RAM (U2/U2+/U2+L only).


  • Firmware target added: Ultimate-II+L; the Lattice version!
  • System Information page (F4) now shows elaborate version info.
  • GEOS support functions from MarkusC64

Source: ultimate64.com github.com facebook.com


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