URSL

URSL is an esoteric programming language created by user:David.werecat which has a stack, queue, tape, memory array and ten registers.

Instructions

During these examples, numbers 1-9 represent a register argument. There are 10 registers, numbered 0 through 9. The number of the register is used as the argument. Also during the examples, a series of underscores (eg. ___) represents that there is a code block inside the instruction.

Instruction	Description
a12	1 = 1 + 2
b1	If 1 >= one hundred and twenty eight, set 1 to two hundred and fifty five; otherwise set 1 to zero
c1	1--
d12	1 = 1 / 2
e12	1 = 2
fo1___?	If 1 is not zero, execute the enclosed code block
fz1___?	If 1 is zero, execute the enclosed code block
g12	Swaps 1 and 2
h12	1 = 1 modulo 2
i1	1++
j1	Jumps 1 instructions ahead
k1	Dequeue a value from the queue and store it in 1
lo1___/	Loops the enclosed code block while 1 is not zero
lz1___/	Loops the enclosed code block while 1 is zero
m12	1 = 1 * 2
n12	1 = 1 and 2
o12	1 = 1 or 2
p1	Pop a value from the stack and store it in 1
q1	Enqueue 1 in the queue
r1	Read a character into 1
t	Terminates the program
u	Push the value of 1 into the stack
v1__-	Set 1 to the numeric value enclosed in the code block
w1	Write character 1 to the console
x12	1 = 1 xor 2
y1	Cycle the registers 1 times
z1	Set 1 to zero
|<	Move the tape left
|>	Move the tape right
|^1	Write 1 to the tape
|v1	Read a value from the tape and store in 1
&12	Read a value from memory address 2 and store in 1
*12	Write a value 1 to memory address 2
#	Beep
~	Clear the console
%	Throw an error
$	Sleep for one second
\___\	An infinite loop
@	Break from an infinite loop
!1	Write integer 1 to the console

All spaces, tabs, newlines and ;'s are treated as whitespace. Comments are not possible.

Examples

CAT Program

\r0w0\

Hello, world!

v072-w0v0101-w0v0108-w0w0v0111-w0v044-w0v032-w0v0119-w0v0111-w0v0114-w0v0108-w0v0100-w0v033-w0

External resources

• Visual Basic .NET interpreter and sample programs