An emulator for the Z80 series of Texas Instruments graphing calculators. It emulates all current Z80 calculator models including the TI-81, and features a debugger, external file loading, and full flash support, including flash app loading. TiLem2 is a major step forward from previous versions, and so can be installed alongside a 0.97x version. It will not touch or use your current ~/.TilEm directory. TiLem2 requires a ROM for your calculator.