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NES calculator

Makefile 0.43% Assembly 46.31% NWScript 46.63% HTML 1.10% PHP 0.17% Ruby 5.36%

ca65 cc65 homebrew nes nesdev

nes-calculator's Introduction

NES Calculator

Scientific calculator for NES, based on http://www.crbond.com/calc65.htm and inspired by this tweet.

Usage

D-pad: moves button cursor
A: press a button
B: toggles between exp and log buttons, between square and square root buttons, and between normal, inverse, hyperbolic and inverse hyperbolic trigonometric buttons.

Compiling

First, install cc65. Then run

$ make

to build the calculator.nes ROM.

Other targets are available as well:

$ make debug # will build with a DEBUG flag; for now only used for "tint" to indicate CPU usage
$ make run # will build the debug target then run on an emulator (see `EMULATOR` variable on the `Makefile`)
$ make usage # computes information about ROM/RAM usage, based on ld map output

nes-calculator's People

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nes-calculator's Issues

Exponent input

For now only the mantissa can be inserted (the exponent depends on when the decimal point is inserted).

Constants

Maybe add buttons (or a second input area) for common constants like pi or e.

Multiplication bug

0e0 * 0e0 results in 0e1

and

0eN * 0e0 results in 0e(N+1)

"Delete" (aka backspace) button

There's even a button reserved for this function (between "." and "="), but it's not trivial to implement it with the current input logic.

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