HP 97 emulator for android.

Best experience with a 7" screen at 1280x800

• Two modes : HP97 and HP97+
  
• Automatic save and load of state.
• Card pack concept

• Can save prints as PNG files (in go97c/prints')
• use 'refresh' to redraw paper from beginning
• default size is 150 lines
• MANUAL/TRACE/NORM supported
• if 'size' is too large, it is taken back at 100 lines (should work up to 1000 lines, memory dependent)
  
• Speed from x1 uto x32 (x16 recommended for HP97+ mode)

HP97 mode:

• 26 registers (0-19, A-E and I, mapped from 20 to 25)
• 224 program steps (touch led display to slide from RUN to PRGM)
  
• 1 side of card records 112 steps or 16 registers (long press the displayed card to remove it from display)
  
• packs extension is .pck, campatable with go67c packs.
  

HP97+ mode:

    Patched original ROM with some new abilities.

• 106 registers (0-99, A-E and I, mapped from 100 to 105)
• 896 program steps
• 1 side of card records 896 steps or 106 registers (noted as + cards)
• pack extension is .pck+
  
• 5 new instructions
• RCLe keyed as 'RCL' 'e^x': use E as indirect register for STO
  
• STOe keyed as 'RCL' 'e^x': use E as indirect register for RCL
  
• GT>e keyed as 'GTO' 'e^x': use E as indirect register for GTO
• GS>e keyed as 'GSB' 'e^x': use E as indirect register for GSB
• BC^X keyed as 'LBL' 'e^x': goto X step back
  

First release:

• should work with at least 854x480 screen.
  

Emulator loosely based on Non-Pareil from Eric Smith, font by Luiz C. Vieira.