255

This is still a work in progress. It may be changed in the future.

255 is an esoteric programming language developed by User:AceKiron where operations are represented by a single byte. Currently available operators are:

Label	Hex	Description	Following parameters
PUSH_N	0x00	Pushes the following N values onto the stack.	How many values to push onto the stack, after that follow the values.
REVERSE_STACK	0x01	Reverses the stack.
PRINT_N	0x02	Pops N values from the stack and prints them as characters.	How many characters to print.
SET_MARK	0x03	Sets a mark that you can later go back to.	What number should be assigned to the mark.
GOTO_MARK	0x04	Goes back to a previously set mark.	What number should be assigned to the mark.
IF_N	0x05	Pops 1 value from the stack, if it's 0 it skips N amount of bytes.	How many bytes should be skipped if the statement is 0, after that follow the bytes for when it's anything else.
DUPLICATE	0x06	Duplicates the top value on the stack.
MATHS	0x07	Pops the top 2 values on the stack and pushes the output of a math operation with those 2 values onto the stack.	Label Hex ADD 0x00 SUBTRACT 0x01 MULTIPLY 0x02 DIVIDE 0x03 POWER 0x04 MOD 0x05
PRINT_N_RAW	0x08	Pops N values from the stack and prints them raw (no converting to characters).	How many values to print.
SWITCH_TOP	0x09	Switches the top value on the stack and the one below it from positions on the stack.

Popular problems

Hello, world!

[0x00, 13, 'H', 'e', 'l', 'l', 'o', ',', ' ', 'w', 'o', 'r', 'l', 'd', '!', '\n', 0x01, 0x02, 13]

Truth-machine

The 3rd value here represents the input given to the truth machine.

[0x00, 1, 1, 0x05, 9, 0x03, 0, 0x00, 1, '1', 0x02, 1, 0x04, 0, 0x00, 1, '0', 0x02, 1, 0x08, ]

99 bottles of beer

[0x00, 1, 99, 0x03, 0, 0x06, 0x05, 139, 0x06, 0x08, 1, 0x00, 30,
 '\n', ',', 'l', 'l', 'a', 'w', ' ', 'e', 'h', 't', ' ', 'n', 'o', ' ',
 'r', 'e', 'e', 'b', ' ', 'f', 'o', ' ', 's', 'e', 'l', 't', 't', 'o',
 'b', ' ',
 0x02, 30, 0x06, 0x08, 1, 0x00, 49,
 '\n', ',', 'd', 'n', 'u', 'o', 'r', 'a', ' ', 't', 'i', ' ', 's', 's',
 'a', 'p', ' ', ',', 'n', 'w', 'o', 'd', ' ', 'e', 'n', 'o', ' ', 'e',
 'k', 'a', 'T', '\n', '.', 'r', 'e', 'e', 'b', ' ', 'f', 'o', ' ', 's',
 'e', 'l', 't', 't', 'o', 'b', ' ',
 0x02, 49, 0x00, 1, 1, 0x01, 0x07, 0x01, 0x06, 0x08, 1, 0x00, 31,
 '\n', '\n', '.', 'l', 'l', 'a', 'w', ' ', 'e', 'h', 't', ' ', 'n', 'o',
 ' ', 'r', 'e', 'e', 'b', ' ', 'f', 'o', ' ', 's', 'e', 'l', 't', 't',
 'o', 'b', ' ',
 0x02, 31, 0x04, 0, 0x00, 31,
 '.', 'l', 'l', 'a', 'w', ' ', 'e', 'h', 't', ' ', 'n', 'o', ' ', 'r',
 'e', 'e', 'b', ' ', 'f', 'o', ' ', 's', 'e', 'l', 't', 't', 'o', 'b',
 ' ', 'o', 'N',
 0x02, 31]

Fibonacci sequence

[0x00, 6, 0, 1, '\n', 1, '\n', 0, 0x08, 1, 0x02, 1, 0x08, 1, 0x02, 1, 0x03,
 0, 0x06, 0x01, 0x07, 0x00, 0x06, 0x08, 1, 0x00, 1, '\n', 0x02, 1, 0x04, 0]