Welcome to AVR Studio 4.19 (09/2011) Prerequisites: Note that the AVR Studio 4.19 is a complete installation and contains all previous service Packs (SP). The following new parts have been added to AVR Studio since 4.18 SP3: -ATtiny84A,ATtiny1634,ATmega3250PA,ATmega325PA,ATmega3290PA,ATXMEGA16A4U,ATXMEGA32A4U, ATXMEGA64A3U,ATXMEGA128A3U,ATXMEGA192A3U,ATXMEGA256A3U,ATXMEGA256A3BU The following additional devices are supported by simulator2 in AVR Studio 4.19: * ATtiny24 / ATtiny24A * ATtiny44 / ATtiny44A * ATtiny84 / ATtiny84A * ATtiny26 * ATmega8 / ATmega8A * ATmega16 / ATmega16A * ATmega32 / ATmega32A * ATmega64 / ATmega64A * ATmega2560 * ATmega2561 * ATmega640 Bug Fixes 13075 - avrdragon.exe not able generate .cac file in Windows 7 64 bit 13735 - AVRISPmkII: STK500 command line utility doesn't correctly verify fuses for ELF files 12257 - Only SP1 includes QT600Upgrade, SP2 and SP3 does not include 11109 - ATtiny261/461/861 PINA register does not work correctly 13434 - External interrupt rising flank on tiny2313 triggers on both flanks 13959 - External interrupt rising flank on xmega128a1 triggers on both flanks 12515 - Xmega16D4 is not setting ADC MUX registers 14565 - Wrong PC mask in ATmega32 model 14622 - Timer 0 output compare & overflow interrupts don't work on ATmega64
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