ELANG

ELANG is an esoteric programming language by User:David.werecat which runs in two dimensions and has a two dimensional register matrix and a string register.

Behavior

• ELANG is a MEL (Mapped Esoteric Language).
• All instructions are two characters long.
• All variables are exactly one byte.
• The code is executed in order of the file as an x,y position.
• There are 100 registers, 00 through 99.
• The first number is the depth, the second number is the register.
• Constant letters x and y specify the current location.
• Constant letters u and v specify the execution direction (0x00 if up or left, 0xFF if down or right).

Instructions

• # represents a hardcoded variable.
• * represents a register with the variable in it.
• @ represents that the register specified contains the register number of the variable.
• & represents any of the above or a constant letter.

Instruction	Description
%#	Sets the current register to #.
$*	Sets the current register to *.
L#	Sets the level to #.
l*	Sets the level to *.
C#	Sets the current register to #.
c*	Sets the current register to *.
P#	Puts the value into the current register.
p*	Puts the value into the current register.
H#	Puts character into the current register.
RL	Returns to the last level.
/\	Changes execution direction to up.
\/	Changes execution direction to down.
->	Changes execution direction to right.
<-	Changes execution direction to left.
:#	If the value in the register is equal to the value in the current register, then execution continues normally; otherwise execution direction is reversed.
;*	If the value in the register is equal to the value in the current register, then execution continues normally; otherwise execution direction is reversed.
`#	If the value in the register is equal to the value in the current register, then the next instruction is skipped; otherwise continue execution normally.
~*	If the value in the register is equal to the value in the current register, then the next instruction is skipped; otherwise continue execution normally.
""	Specifies the start of the program.
()	Specifies the end of the program.
.#	Prints the letter #.
,*	Prints the letter *.
=*	Prints the numeric value of *.
__	Writes a linefeed.
MM	Clears the console.
UK	Waits for a user key and puts the value in the current register.
TT	Traps the program for one second.
A#	Performs AND on current register and # and puts in current register.
a*	Performs AND on current register and * and puts in current register.
O#	Performs OR on current register and # and puts in current register.
o*	Performs OR on current register and * and puts in current register.
NN	Performs NOT on current register and puts in current register.
Z#	Performs XOR on current register and # and puts in current register.
z*	Performs XOR on current register and # and puts in current register.
!*	Zeros the specified register.
@@	Causes execution to reverse direction.
G#	Adds # and current register and puts in current register.
g*	Adds * and current register and puts in current register.
J#	Subtracts # and current register and puts in current register.
j*	Subtracts * and current register and puts in current register.
&&	NOP.
[#	Adds a character to the string register.
{*	Adds a character to the string register.
]]	Removes a character from the string register.
++	Prints the string register.
||	Clears the string register.
**	Beep.

External resources

• Visual Basic .NET interpreter and sample programs