; Mario – draw pixel at (X,Y) 0xE0: LD A, (X) ; load X position 0xE2: LD B, (Y) 0xE4: CALL 0x8F7C ; plot routine (found by exploit) 0xE7: RET
While creating games for the Casio fx-991ES Plus can be a fun and rewarding experience, there are challenges and limitations to consider:
Appendix: Full keystroke listing for repacked Snake game available on request. casio fx991es plus games code repack
This is the most common "game" found in student communities. It uses the RanInt# function. RanInt#(1,3)
Because the overflow hack is highly dependent on the exact hardware revision of your fx-991ES Plus (Edition 1 vs. Edition 2), the most reliable way to play games is through manual code repacks using the internal variables memory. ; Mario – draw pixel at (X,Y) 0xE0:
"Games" on this device are actually clever visual simulations or memory exploits utilizing the calculator's built-in characters, fractions, and matrices. Classic Casio fx-991ES Plus "Games" and Visual Exploits
If you aren't in the mood to play a math-based guessing game, you can access the hidden diagnostic menu of the Casio fx-991ES Plus to test the screen's contrast and matrix capabilities. Ensure the calculator is turned on. RanInt#(1,3) Because the overflow hack is highly dependent
Press the key, then [7] (which activates the nPr function, but we are using it to access the hidden menu). Press [•] (decimal point) and then [ ) ] (for the comma).
However, don’t click away just yet. While you cannot download a "repack" of games, you can exploit the calculator’s logic to play what the community calls These aren't installed; they are glitched math problems that require skill to solve.
On standard graphic calculators like the Casio fx-9860G or TI-84 Plus, loading a game is simple: you plug the device into a PC and transfer an executable file. The fx-991ES Plus does not support external file transfers.
Do not type letters using text mode if the code requires variables. Use the red ALPHA key followed by the respective variable button.