2 Bits, 1 Byte

2 Bits, 1 Byte is an assembly language for a 2-bit CPU, made by User:Gilbert189. With 1 byte of memory, this machine could store at least 2 instructions.

Operations

The following are instructions of 2 Bits, 1 Byte:

Code	Name	Description
00	DON	DO Nothing.
01	ACT	ACTion. Given value in memory, change the value according to the following table: From To 00 11 01 10 10 00 11 01
10	JMP	JuMP. Jump (unconditionally) to address specified.
11	END	END. Print the entire memory as character and end the program.

The instruction pointer can wrap around, thus allowing more "complicated" programs.

Programs

Since the memory is one byte, you can represent the entire program with just one character.

For example:

I

becomes:

01001001

which, when disassembled, becomes:

ACT 00b
JMP 01b

Example codes

Endless loop

'

Disassembled:

DON
JMP 01b
END ; lol

Output 'm'

a

Try it online

Disassembled:

ACT 10b
DON ; becomes END

Quine

Any digit outputs itself. For example:

7

Try it online

Each ASCII digit starts with 0011 in binary, so the first two instructions are DON END.

Another Quine

?

Output "|"

~

Interpreters

• JavaScript interpreter
• x86 assembly interpreter by User:Bangyen