n2t-cpu

An implementation of the nand2tetris CPU emulator that runs in your browser.

Supports drawing to the screen, but not keyboard input.

Try it out!

Features

• Support for all instructions, not just the author’s 18 default mnemonics.

• Keyboard shortcuts (replace CTRL with Command on Mac)

  Shortcut	Behavior
  ctrl+o	Open a hack file
  ctrl+shift+o	Open a RAM dump file
  s	Step 1
  x	Step X
  shift+x	Step X (prompt for X)
  ctrl+g	Go to ROM address
  ctrl+h	Go to RAM address
  ctrl+b	Set a breakpoint at the current PC
  ctrl+shift+b	Set a breakpoint at the prompted address