9f87m4atttaaaou;

9f87m4atttaaaou; (pronounced Mashed Potatolang) is a Stack-Based esolang by CosmicMan08#1975 (User:CosmicMan08). It was designed to make it look like any program made in it was made by mashing your keyboard.

Instruction list

Arithmetics

Instruction	Use
a	pops two values a and b, then pushes the result of a + b
d	pops two values a and b, then pushes the result of a / b
e	pops two values a and b, then pushes the result of a ^ b
p	increments the value at the top of the stack by 1
u	decrements the value at the top of the stack by 1
v	pops a value a, then returns the square root of a
s	pops two values a and b, then pushes the result of a - b
g	pops two values a and b, if a is greater than b it will push 1, otherwise it will push 0
l	pops two values a and b, if a and b have the same value it will push 1, otherwise it will push 0
m	pops two values a and b, then pushes the result of a * b
n	pops a value, if the value is 0 it will push 1, otherwise it will push 0
%	pops two values a and b, then pushes the result of a % b

Stack Manipulation

Instruction	Use
c	duplicates the value at the top of the stack
r	discards the value at the top of the stack
x	pops a value a, then moves the value at that point in the stack to the end
y	pops 2 values a and b, then inserts b into the ath position of the stack
z	swaps the top two values of the stack

Data

Instruction	Use
i	gets one byte of ascii input and pushes it
o	pops a value and prints out the corresponding ascii character
_	prints out the memory
,	gets a number input and pushes it
.	pops a value and prints it out
q	gets a string of input and pushes each character in it
j	pushes the size of the stack
t	pushes a random value from 1 - 10
0	pushes 0 to the top of the stack
1	pushes 1 to the top of the stack
2	pushes 2 to the top of the stack
3	pushes 3 to the top of the stack
4	pushes 4 to the top of the stack
5	pushes 5 to the top of the stack
6	pushes 6 to the top of the stack
7	pushes 7 to the top of the stack
8	pushes 8 to the top of the stack
9	pushes 9 to the top of the stack

Program Control

Instruction	Use
b	pops a value a, then move the pc to a
f	starts a loop if the top of the stack isn't 0
w	starts a loop if the top of the stack is 0
;	marks the end of a f loop
:	marks the end of a w loop
k	exits a f loop without having to hit a ;
'	exits a w loop without having to hit a :
h	halts the program
^	toggles whether or not the pc reads non-^ characters

Computational Class

It is possible to convert any cyclic tag program to a 9f87m4atttaaaou; program, making 9f87m4atttaaaou; turing complete.

The converted program starts with the datastring, then _1fr, from there it converts the instructions in the program string into 9f87m4atttaaaou; instructions...

CT	9f87m4atttaaaou;
0	0uxf0zk;0y_
1	0uxf1zk;0y_
;	0xr_jwh:r

...finally the program ends with j;.

Examples

Hello, World!

98mo5cacm1ao6ca9mcoo5ccaz6am1ao8cacao65a8m1zso5ccaz6am1ao5cacm7caao6ca9mo5cacmo

Hello, World! (optimized version)

98mo29pepco7acoco3ao95muco84mo2muco83maco3aco6zso29pecou3zdo

Truth Machine

,fc.;.

4-operation calculator

,i,z67mswrm.h:pwra.h:2awrzs.h:2awrzd.h:

Fibonacci Sequence

01fc.48moc0ya;

Deadfish

01fri29peswzuz':5awzpz':6awzc.z9po':4awz2ez':rpfuk;c82eswz':r1;

The Name

The name of this esolang (9f87m4atttaaaou;) is a program that generates a keymash-esque string.

Implementations

• Offline interpreter in Python by CosmicMan08
• Online interpreter in JS by CosmicMan08
• Compiler to JS by User:Challenger5