Hack Emulator

This program takes Hack machine code as input and executes it.

TODO

• Variables should be > 1024 not < 1024
• Create window for screen using github.com/emoon/minifb if --screen option is given

Instruction Set

Hack machine code has two types of instructions: 'A' and 'C'.

• A-type instructions simply setup C-type instructions by manipulating the A-register.
• C-type instructions perform some computation operation.

A-type

0 000000000100101

• Leading 0 means A-type.
• Remaining 15 bits are a value to store into the A-register.
• Written in assembly as @37 (load decimal 37 to A-register).

C-type

1  _ _ a c1 c2 c3 c4 c5 c6 d1 d2 d3 j1 j2 j3

• Leading 1 means C-type.
• Proceeding 2 bits are ignored.
• a-bit and the 6 c-bits represent the computation to be executed.

Destination bits (d1, d2 & d3)

Jump bits (j1, j2, j3)