Welcome to AVR Studio 4.18 Service Pack 3 (08/2010)

Part support

The following new parts have been added to AVR Studio since 4.18 SP2:
- ATmega165A, ATmega169A, ATmega645A, ATmega649A, ATmega325A, ATmega329A, ATmega6450A, ATmega6490A.

Bug Fixes 

11404 - AVRDragon should only work with the A4 and newer xmega devices
11269 - Part description Files for ATXMega16D4
10162 - User signature readout for stk600.exe
8567 - Studio does not check if FPGA is configured before running detect targets
command
6899 - ELF format: Signature is verified with attached device without regard to the
selected one
9946 - ELF file protection issue. Readonly files not accessible.
11085 - Command line interface (STK500.exe) for programming ATXMEGA32A4 fails fuse
programming
10780 - Fuse Byte with AVR Studio 4.18
10648 - Click on Help for AVRONE's error message leads to STK500-user guide
10700 - Wrong message about unsupported device after debugwire enable
11069 - STK500.exe command line(v2.3) fails for -a option in the AVR Studio Version
4.18 Build 684
11002 - AVRISP mkII's command line software does not list the xmega devices
10243 - Programming the AVR Devices with ELF file in commandline in not explained
10553 - The values displayed in AVR DRAGON Options dialog are not correct
10676 - Help page is not displayed for ISP mode error of AVRISP mkII
10981 - Not able to lock the target "ATxmega128A1"
11099 - Programming fails on 1.8V due to wrong sensing of Vtarget
11242 - automatic DWEN setting erases device
11351 - stk500.exe -ae option not working
11092 - CLI AVRISPmkII not working with -a switch (address range)
11386 - ATtiny40 missing SPI
11388 - AT90USB1286/7 part description file bug
9098 - Configuration of Bootloader Fuse Setting for the device ATmega2561 shows wrong
values
10552 - AVR DRAGON Option dialog test fails (Test O2)
11664 - Error selecting JTAG mode AVR Dragon and ATmega1284P
11342 - Wrong number of GPIOR registers in xmegaD*?
10990 - Odd behavior when debugging ATmega329PA in boot section
11511 - single stepping math extensions on HVE fails
11512 - single stepping math extensions on HVE fails
11513 - single stepping math extensions on HVE fails
10876 - Debugging with debugWIRE disassembler view shows BREAK instructions instead
10625 - Run to main puts break point at wrong position
10512 - command line tools -T switch does appear to not work + ”Failed to program
FLASH"
4612 - When target power toggles no event is sent to AVR Studio
10710 - Starting at program entry point fails
11505 - SPH cannot be written on ATtiny40
9720 - ejournal 533159, Find in files crashes when accessing found items
10524 - 64-bit watch values >= 2**32 become 0xffffffff
11406 - AVR Studio 4 crashing when loading AVR Assembler project


Known Issues 

- ATmega8: Problem with Waveform Generation Mode bits -> AVR Tools-Simulator-Known
Issues 

- Autodetection of wrong device selected by user in a debug session is not working
for all variants (P, PA, A) of the following devices:
  ATmega165, ATmega169, ATmega645, ATmega649, ATmega325, ATmega329
  Workaround: Make sure the selected device matches the target device used.


Note
Windows 95 is no longer supported by AVR Studio. The most recent version that supported
Windows 95 was AVR Studio 4.12 SP3.
Windows 98 is no longer supported by AVR Studio. The most recent version that supported
Windows 98 was AVR Studio 4.16 SP1.