Stella release 2.7.7

* Corrected emulation of CPU opcodes involving 'decimal' mode (ADC/RRA and SBC/ISB). Special thanks to SeaGtGruff and others on the Stella mailing list for in-depth discussion and creation of test ROMs.

* Fixed bug in F4SC bankswitching mode; writes to bankswitch addresses weren't triggering a bank switch.

* Changed internal sound frequency of Pitfall 2 from 15.75KHz to 20KHz, as this sounds much more authentic when compared to a real cartridge.

Posted by Steve Anthony 2009-05-01