HP 12C hardware emulator YOU NEED TO HAVE THE ROM DUMP OF THIS calculator TO USE IT.see http:sites.google comsiteolivier2smet2homego1xc portrait and lanscape mode. automatic save and load of state. 39;ON39; only active on 39;longtouch39; to avoid mistakes.tests supported use 39;press on39; menu when calculator is off then press 39;,39;. speed up from x1 up to x4. full textual programming mode needed due to keyboard remapping.