Free HP 87 emulator for android.

• include one quad disc HP9121 compatible disk unit (use RAW disc image) 
• ram from 64 KB upto 2 MB (if you need more, 16 MB is possible, 8 MB for basic, 8MB for electronic disc)
• cpu speed from x1 upto x50 (now UCSD pascal is fast enough)
• rom drawer support (some usefull roms included)
• external keyboard support (physical or bluetooth)
• best with a 1280x800 android device

3 models:

• HP87 base model : graph crt at 544x240 as the real computer
• HP87+ : graph crt at 640x480 (roms patched)
• HP87++ : graph crt at 1016x480 (roms patched)

Infos

• On kitkat device, import/export directory is now /Android/data/o2s.emul.hp87/files/... instead of /go87/... on the sdcard. 
  For android older then kitkat, nothing change.
• cpu emulated in native C code for speed up
• sound not supported.

• should work with at least 1024x600 screen.
  

demo in standard mode	demo in HP87++ mode (1016x480)

links : FPGA HP86B, Series80