MIPS

MIPS scripting language for IC10 housings / chips

MIPS is Stationeers' inspiration for the in-game scripting language called IC10. It runs on IC10 chips crafted at the Electronics Printer.

Registers

Internal registers r?: The IC contains 16 CPU registers, numbered r0 to r15. From now on referred to as r?.

Device registers d? logicType: Device registers are written to and from the IC. A device register is numbered d0 to d5 (select via screw), or db (connected device). From now on referred to as d?.

Logic and algorithmic with Internal registers

All calculations are exclusively performed to and from r? registers, or generally more understood as variables in programming. You can use aliases to give convenient names with the alias string r?|d?command (see below).

Internal registers can be manipulated in various ways.

• Write constant values move r? (r?|num): Example: move r0 2 sets r0 to the number 2.
• Calculate: Calculations are done to- and from these registers, like add r? a(r?|num) b(r?|num). Example: add r1 r0 3 adds 3 to r0, and writes to r1.

Note, for any kind of if statements or loop behaviours, knowing about labels, branching, and jumps is essential knowledge. See below.

IO to Device registers

Acronym d? stands for device, where ? is a number corresponding to the screw device selector on the socket. You can also read/write to the device where the IC is planted in using device db.

Generally, there are up to 6 devices which can be set using the screwdriver d0 to d5. A special device register db is the device wherever the IC is mounted upon. Very convenient for atmospheric devices where no separate IC socket is required.

Note, the IC is completely unaware where d? is actually connected to. So if you get a logicType error, check d? number, or check if the screw has been set opn the socket. An alias is only convenient to convey what is expected to be set on the d? screw, it does not actually set or program the screq.

• Read from device (load) l r? d? logicType: Reads logicType, like Pressure from a gas sensor, from device d? to register r?. Values can be read from connected devices and put into the register using the l (load) command. For example, if you want to load the state of a door.
  Example: l r0 Door Open reads the 'Open' field of an object named 'Door', that would be connected to the IC housing of the chip.
• Write to a device (set) s d? logicType r?: Write a value from a register back to a device using the command s d? logicType r?. For example, if d0 is set to a door using the screwdriver, s d0 Open 0 sets the 'Open' status of the d0 (a door) to 0, effectively closing the door.

batch IO to - Device registers

Batch writing needs to be done to a specific deviceHash instead of d?. Is unique per device type, which you can find in the Stationpedia entries.

• lb r? deviceHash logicType batchMode
• sb deviceHash logicType r?

Additionally, using the following batch commands, a nameHash can be provided to only modify devices with a certain name.

• lbn r? deviceHash nameHash logicType batchMode
• sbn deviceHash nameHash logicType r?

batchMode is a parameter equal to 0, 1, 2, or 3. These are also defined as the constants Average, Sum, Minimum, and Maximum respectively. The word or number can be used.

Combining one of these functions with the HASH() function can be advantageous:

lbn r0 HASH("StructureGasSensor") HASH("Sensor 1") Temperature Average

This code will load the average temperature of all gas sensors on the network named "Sensor 1" onto register r0

If the batch read (lb/lbn) is done on a network without any matching devices the results will be as specified in the table:

Batch read with no devices

Batch Mode	Result
Average (0)	nan
Sum (1)	0
Minimum (2)	0
Maximum (3)	ninf

Examples

Here are some examples demonstrating all three operations:

move r0 10
Sets register r0 to the value 10

move r0 r1
Copies the value of register r1 to register r0

l r0 d0 Temperature
Reads the Temperature parameter from device d0 and places the value in register r0. Note: not all devices have a Temperature parameter, check the in-game stationpedia.

To set a device specific value (like On), you can write into this value.

s d0 On r0
Writes the value from register r0 out to On parameter of device d0. In this example the device will be turned On, if valve of register r0 equals 1, otherwise (register r0 equals 0) it will turned off. See section Device Variables.

It's recommended to use labels (like: someVariable) instead of a direct reference to the register. See alias in section Instructions.

Special registers

There are two more registers. One called ra (return address) and one called sp (stack pointer). The ra is used by certain jump and branching instructions (those ending with -al) to remember which line in the script it should return to. The sp tracks the next index within the stack (a memory that can store up to 512 values) to be pushed (written) to or popped (read) from. Neither ra or sp is protected, their values can be changed by instructions like any other register.

Stack Memory

push r?

adds the value sp and increments the sp by 1.

pop r?

loads the value in the stack memory at index sp-1 into register r? and decrements the sp by 1.

peek r?

loads the value in the stack memory at index sp-1 into register r?.

get r? d? address(r?|num)

loads the value in the stack memory at index address on provided device into register r?.

getd r? id(r?|num) address(r?|num)

loads the value in the stack memory at index address on provided device id into register r?.

put d? address(r?|num) value(r?|num)

adds the value to the stack memory off the provided device at index address.

putd id(r?|num) address(r?|num) value(r?|num) 

adds the value to the stack memory off the provided device id at index address.

As mentioned previously, sp can be both written to and read from any time. When reading (peek or pop), sp must be between 1 and 512, inclusive. While writing (push), sp must be between 0 and 511, inclusive.

Stack memory is persistent on logic chips. This means that if you have a logic chip and push values to the stack, the code that pushes those values can be removed and the stack will retain those values.

Note that this does not carry over to any other logic chips which receive the program of the original; They will need to have their stack memories programmed individually.

Stack Traversing

Traversing the stack can be done similarly to how an array would be traversed in some other languages:

#this will traverse indices {min value} through {max value}-1
move sp {min value}
loop:
add sp sp 1
peek r0

#do something here with your stack values (loaded into r0)

blt sp {max value} loop

#continue on

Alternatively, you can use the pop function's decrementing to make a more efficient loop:

move sp {max value}
add sp sp 1
loop:
pop r0

#do something here with your stack values (loaded into r0)

bgt sp {min value} loop

#continue on

Device Ports

ICs can interact with up to 6 other devices via d0 - d5, as well as the device it's attached to via db. To change or set a device, use a screwdriver and adjust the device in the IC housing. You can read or set any of the device's properties, so it is possible to do things like read the pressure or oxygen content of a room on the same Device port.

Additionally, is possible to set other IC housings as devices, allowing you to create programs that run across multiple ICs together. For example, an Gas Mixing IC could check the Setting field of a Atmosphere Sensor IC and act based on the value of the sensor chip.

The l (load) or s (set) instructions you have to read or set these values to your device. Examples:

#Reads the 'Temperature' from an atmosphere sensor
# at device port 'd0' into register 'r0'.
l r0 d0 Temperature

# Writes the value of the register 'r0' to the
# device on port 'd1' into the variable 'Setting'.
s d1 Setting r0

Labels

Labels are used to make it easier to jump between lines in the script. The label will have a numerical value that is the same as its line number. Even though it's possible to use a labels value for calculations, doing so is a bad idea since any changes to the code can change the line numbers of the labels.

main: # define a jump mark with label 'main'
j main # jumps back to 'main'

Constants

Instead of using a register to store a fixed value, a constant can be made. Using this name will refer to the assigned value. With the help of Constants you can save register places.

# defines a Constant with name 'pi'
# and set its value to 3.14159
define pi 3.14159

You can use these constants like any other variables (see: alias in section Instructions). Example:

# set the value of register 'r0' to the value of constant named 'pi'.
move r0 pi

Indirect referencing

This is a way of accessing a register by using another register as a pointer. Adding an additional r in front of the register turns on this behaviour. The value stored in the register being used as the pointer must be between 0 to 15, this will then point to a register from r0 to r15, higher or lower values will cause an error.

move r0 5 # stores the value 5 in r0
move rr0 10 
# is now the same as 'move r5 10' 
# since r0 has the value 5, rr0 points at the register r5

Additional r's can be added to do indirect referencing multiple times in a row.

move r1 2
move r2 3
move rrr1 4
# is now the same as 'move r3 4'
# since r1 points at r2 which points at r3

This also works with devices

move r0 2 # stores the value 2 in r0
s dr0 On 1 
# is now the same as 's d2 On 1'
# r0 has the value 2 so dr0 points at d2

Network Referencing / Channels

All cable networks have 8 Channels which can have data loaded from/stored to via a device and connection reference. Connections for each supported device are listed in the stationpedia. All 'connections' a device can make are a connection (pipe, chute, cable), but only cable networks have channels.

The 8 channels (Channel0 to Channel7) are however volatile, in that data is destroyed if any part of the cable network is changed, removed, or added to, and also whenever the world is exited. All these channels default to NaN. Strictly speaking, they default to what we would call "quiet NaN", in that its not an error it simply means its not a number yet. Recommend you use these channels for reading and writing between networks, rather than as a data store. This effectively means an IC can read all the networks for all devices to connected to it, so not just their own local network, but any networks any device they can reference is connected to.

# d0 is device zero, and the :0 refers
# to that device's 0 connection
l r0 d0:0 Channel0

For example: on an IC Housing, the 0 connection is the data port and 1 is power, so you could write out r0 to Channel0 of the power network of the Housing using s db:1 Channel0 r0

Comments

Comments can be placed using a # symbol. All comments are ignored by the game when it reads commands. Below is an example of valid code with two comments.

alias MyAlias r0 # Text after the hash tag will be ignored to the end of the line.
# You can also write comments on their own lines, like this.

Debugging advices

The value stored in a register or variable can easily be displayed by writing it to the Setting parameter of the IC housing. This has no side effects. To see the value, just stand close to the IC housing and look directly at the housing.
s db Setting r0. # sets/writes the value of register r0 into the parameter Setting of the IC Housing(db)

To check if a certain block of code is executed, use the above trick but with a random number that you choose, like the line number.
This example will display the number 137 on the IC housing.
s db Setting 137 # sets/writes the number 137 into the parameter Setting of the IC Housing(db)

Always use unique names for labels. When a label is named after a MIPS keyword like "Temperature:" or "Setting:" the original meaning of the keyword is overwritten, so when an instruction tries to use it an error will occur.

A configuration cartridge installed in a tablet can be used to see all available values and configuration parameter for all devices you focus on.

Learning MIPS

MIPS can be difficult to get started with. So here is a list of instructions that are useful for beginners. These can be used to write many different scripts.

General:

• alias make the script easier to read by assigning a name to a register or device, example: alias rTemperature r15
• label: where "label" can be replaced with almost any word, jump and branch instructions can use these in place of line numbers, example: start:
• yield pause for 1-tick and then resume, if not used the script will automatically pause for 1-tick after 128 lines

Jumps:

• j someLabelName jump to line with someLabelName
• jal someLabelName stores the next line number into the register ra (return address) and then jump to someLabelName
• j ra jump to register ra (return address)

Branching (jump-if):
beq a(r?|num) b(r?|num) c(r?|num) if a is equal to b goto c (label or linenumber)
bne a(r?|num) b(r?|num) c(r?|num) if a not-equal b goto c (label or linenumber)
bgt a(r?|num) b(r?|num) c(r?|num) if a greater than b goto c (label or linenumber)
blt a(r?|num) b(r?|num) c(r?|num) if a less than b goto c (label or linenumber)
The suffix -al can be added to each of these (example: beqal) to save the next line number into the "return address" register. this is called using j ra

Device interactions:

l (load)
lb (load batch, requires one of the following: 0(Average) / 1(Sum) / 2(Minimum) / 3(Maximum))
ls (load slot)
s (store)
sb (store batch)

Logic and Math:

seqz (common NOT-gate: turns 0 into 1, and all other values into 0)
move
add (addition)
sub (subtraction)
mul (multiplication)
div (division)

Common device variables:

On (1 is on, 0 is off)
Open (1 is open, 0 is closed)
Setting (meaning varies between devices, example: a LED display(console) will show this value)
Activate (1 usually means running, example: a Daylight sensor is 1 when the sun shines on it)
Temperature (in Kelvin, Celsius - 273.15)
Pressure (in kPa)

Notes:
-All instructions and variables can be seen in-game in the MIPS editor window by clicking the "f", "x" and "s(x)" buttons on the top right.
-The stationpedia is the best source to see which variables are available to each device.
-Most scripts are loops, they end with a jump instruction that leads back up to the start. Otherwise they will just run once and then stop.

Two practice scripts:
Automatic Night Light: Load "Activate" from a Daylight sensor, flip the value with a NOT-gate, store the value to the "On" variable of one or more lights.
Automatic Wall Cooler: Read "Temperature" from a Gas Sensor. Branch if the value is greater than X, turn on the cooler. Branch if the value is less than Y, turn off the cooler. (Wall coolers need a minimum of 12.5 kPa pressure in the connected pipe)

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Instructions

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See MIPS/instructions

Utility

alias str r?|d? 

Labels register or device reference with name, device references also affect what shows on the screws on the IC base.

Example:

alias dAutoHydro1 d0
alias vTemperature r0

define str num 

Creates a label that will be replaced throughout the program with the provided value.

Example:

define ultimateAnswer 42
move r0 ultimateAnswer # Store 42 in register 0

hcf 

Halt and catch fire

sleep a(r?|num) 

Pauses execution on the IC for a seconds

yield 

Pauses execution for 1 tick

Mathematical

abs r? a(r?|num) 

Register = the absolute value of a

Example:

define negativeNumber -10
abs r0 negativeNumber # Compute the absolute value of -10 and store it in register 0

add r? a(r?|num) b(r?|num) 

Register = a + b.

Example:

add r0 r0 1 # increment r0 by one

define num1 10
define num2 20
add r0 num1 num2 # Add 10 and 20 and store the result in register 0

ceil r? a(r?|num) 

Register = smallest integer greater than a

Example:

define floatNumber 10.3
ceil r0 floatNumber # Compute the ceiling of 10.3 and store it in register 0

div r? a(r?|num) b(r?|num) 

Register = a / b

exp r? a(r?|num) 

exp(a) or e^a

floor r? a(r?|num) 

Register = largest integer less than a

log r? a(r?|num) 

base e log(a) or ln(a)

max r? a(r?|num) b(r?|num) 

Register = max of a or b

min r? a(r?|num) b(r?|num) 

Register = min of a or b

mod r? a(r?|num) b(r?|num) 

Register = a mod b (note: NOT a % b)

Example:

move r? a(r?|num) 

Register = provided num or register value.

Example:

move r0 42 # Store 42 in register 0

mul r? a(r?|num) b(r?|num) 

Register = a * b

rand r? 

Register = a random value x with 0 <= x < 1

round r? a(r?|num) 

Register = a rounded to nearest integer

sqrt r? a(r?|num) 

Register = square root of a

sub r? a(r?|num) b(r?|num) 

Register = a - b.

trunc r? a(r?|num) 

Register = a with fractional part removed

Mathematical / Trigonometric

acos r? a(r?|num) 

Returns the angle (radians) whos cos is the specified value

asin r? a(r?|num) 

Returns the angle (radians) whos sine is the specified value

atan r? a(r?|num) 

Returns the angle (radians) whos tan is the specified value

atan2 r? a(r?|num) b(r?|num) 

Returns the angle (radians) whose tangent is the quotient of two specified values: a (y) and b (x)

cos r? a(r?|num) 

Returns the cosine of the specified angle (radians)

sin r? a(r?|num) 

Returns the sine of the specified angle (radians)

tan r? a(r?|num) 

Returns the tan of the specified angle (radians)

Stack

clr d? 

Clears the stack memory for the provided device.

get r? d? address(r?|num) 

Using the provided device, attempts to read the stack value at the provided address, and places it in the register.

getd r? id(r?|num) address(r?|num) 

Seeks directly for the provided device id, attempts to read the stack value at the provided address, and places it in the register.

peek r? 

Register = the value at the top of the stack

poke address(r?|num) value(r?|num) 

Stores the provided value at the provided address in the stack.

pop r? 

Register = the value at the top of the stack and decrements sp

push a(r?|num) 

Pushes the value of a to the stack at sp and increments sp

put d? address(r?|num) value(r?|num) 

Using the provided device, attempts to write the provided value to the stack at the provided address.

putd id(r?|num) address(r?|num) value(r?|num) 

Seeks directly for the provided device id, attempts to write the provided value to the stack at the provided address.

Slot/Logic

l r? d? logicType 

Loads device LogicType to register by housing index value.

Example:

Read from the device on d0 into register 0

l r0 d0 Setting

Read the pressure from a sensor

l r1 d5 Pressure

This also works with aliases. For example:

alias Sensor d0
l r0 Sensor Temperature

ld r? id(r?|num) logicType 

Loads device LogicType to register by direct ID reference.

lr r? d? reagentMode int 

Loads reagent of device's ReagentMode where a hash of the reagent type to check for. ReagentMode can be either Contents (0), Required (1), Recipe (2). Can use either the word, or the number.

ls r? d? slotIndex logicSlotType 

Loads slot LogicSlotType on device to register.

Example:

Read from the second slot of device on d0, stores 1 in r0 if it's occupied, 0 otherwise.

ls r0 d0 2 Occupied

And here is the code to read the charge of an AIMeE:

alias robot d0
alias charge r10
ls charge robot 0 Charge

s d? logicType r? 

Stores register value to LogicType on device by housing index value.

Example:

s d0 Setting r0

sd id(r?|num) logicType r? 

Stores register value to LogicType on device by direct ID reference.

ss d? slotIndex logicSlotType r? 

Stores register value to device stored in a slot LogicSlotType on device.

Slot/Logic / Batched

lb r? deviceHash logicType batchMode 

Loads LogicType from all output network devices with provided type hash using the provide batch mode. Average (0), Sum (1), Minimum (2), Maximum (3). Can use either the word, or the number.

Example:

lb r0 HASH("StructureWallLight") On Sum

lbn r? deviceHash nameHash logicType batchMode 

Loads LogicType from all output network devices with provided type and name hashes using the provide batch mode. Average (0), Sum (1), Minimum (2), Maximum (3). Can use either the word, or the number.

lbns r? deviceHash nameHash slotIndex logicSlotType batchMode 

Loads LogicSlotType from slotIndex from all output network devices with provided type and name hashes using the provide batch mode. Average (0), Sum (1), Minimum (2), Maximum (3). Can use either the word, or the number.

lbs r? deviceHash slotIndex logicSlotType batchMode 

Loads LogicSlotType from slotIndex from all output network devices with provided type hash using the provide batch mode. Average (0), Sum (1), Minimum (2), Maximum (3). Can use either the word, or the number.

sb deviceHash logicType r? 

Stores register value to LogicType on all output network devices with provided type hash.

Example:

sb HASH("StructureWallLight") On 1

sbn deviceHash nameHash logicType r? 

Stores register value to LogicType on all output network devices with provided type hash and name.

sbs deviceHash slotIndex logicSlotType r? 

Stores register value to LogicSlotType on all output network devices with provided type hash in the provided slot.

Bitwise

and r? a(r?|num) b(r?|num) 

Performs a bitwise logical AND operation on the binary representation of two values. Each bit of the result is determined by evaluating the corresponding bits of the input values. If both bits are 1, the resulting bit is set to 1. Otherwise the resulting bit is set to 0.

nor r? a(r?|num) b(r?|num) 

Performs a bitwise logical NOR (NOT OR) operation on the binary representation of two values. Each bit of the result is determined by evaluating the corresponding bits of the input values. If both bits are 0, the resulting bit is set to 1. Otherwise, if at least one bit is 1, the resulting bit is set to 0.

not r? a(r?|num) 

Performs a bitwise logical NOT operation flipping each bit of the input value, resulting in a binary complement. If a bit is 1, it becomes 0, and if a bit is 0, it becomes 1.

Note:

This is a bitwise operation, the NOT of 1 => -2, etc. You may want to use seqz instead

or r? a(r?|num) b(r?|num) 

Performs a bitwise logical OR operation on the binary representation of two values. Each bit of the result is determined by evaluating the corresponding bits of the input values. If either bit is 1, the resulting bit is set to 1. If both bits are 0, the resulting bit is set to 0.

sla r? a(r?|num) b(r?|num) 

Performs a bitwise arithmetic left shift operation on the binary representation of a value. It shifts the bits to the left and fills the vacated rightmost bits with a copy of the sign bit (the most significant bit).

sll r? a(r?|num) b(r?|num) 

Performs a bitwise logical left shift operation on the binary representation of a value. It shifts the bits to the left and fills the vacated rightmost bits with zeros.

sra r? a(r?|num) b(r?|num) 

Performs a bitwise arithmetic right shift operation on the binary representation of a value. It shifts the bits to the right and fills the vacated leftmost bits with a copy of the sign bit (the most significant bit).

srl r? a(r?|num) b(r?|num) 

Performs a bitwise logical right shift operation on the binary representation of a value. It shifts the bits to the right and fills the vacated leftmost bits with zeros

xor r? a(r?|num) b(r?|num) 

Performs a bitwise logical XOR (exclusive OR) operation on the binary representation of two values. Each bit of the result is determined by evaluating the corresponding bits of the input values. If the bits are different (one bit is 0 and the other is 1), the resulting bit is set to 1. If the bits are the same (both 0 or both 1), the resulting bit is set to 0.

Comparison

select r? a(r?|num) b(r?|num) c(r?|num) 

Register = b if a is non-zero, otherwise c

Note:

This operation can be used as a simple ternary condition

Example:

select r1 r0 10 100

Comparison / Device Pin

sdns r? d? 

Register = 1 if device is not set, otherwise 0

sdse r? d? 

Register = 1 if device is set, otherwise 0.

Comparison / Value

sap r? a(r?|num) b(r?|num) c(r?|num) 

Register = 1 if abs(a - b) <= max(c * max(abs(a), abs(b)), float.epsilon * 8), otherwise 0

sapz r? a(r?|num) b(r?|num) 

Register = 1 if abs(a) <= max(b * abs(a), float.epsilon * 8), otherwise 0

seq r? a(r?|num) b(r?|num) 

Register = 1 if a == b, otherwise 0

seqz r? a(r?|num) 

Register = 1 if a == 0, otherwise 0

sge r? a(r?|num) b(r?|num) 

Register = 1 if a >= b, otherwise 0

sgez r? a(r?|num) 

Register = 1 if a >= 0, otherwise 0

sgt r? a(r?|num) b(r?|num) 

Register = 1 if a > b, otherwise 0

sgtz r? a(r?|num) 

Register = 1 if a > 0, otherwise 0

sle r? a(r?|num) b(r?|num) 

Register = 1 if a <= b, otherwise 0

slez r? a(r?|num) 

Register = 1 if a <= 0, otherwise 0

slt r? a(r?|num) b(r?|num) 

Register = 1 if a < b, otherwise 0

sltz r? a(r?|num) 

Register = 1 if a < 0, otherwise 0

sna r? a(r?|num) b(r?|num) c(r?|num) 

Register = 1 if abs(a - b) > max(c * max(abs(a), abs(b)), float.epsilon * 8), otherwise 0

snan r? a(r?|num) 

Register = 1 if a is NaN, otherwise 0

snanz r? a(r?|num) 

Register = 0 if a is NaN, otherwise 1

snaz r? a(r?|num) b(r?|num) 

Register = 1 if abs(a) > max(b * abs(a), float.epsilon), otherwise 0

sne r? a(r?|num) b(r?|num) 

Register = 1 if a != b, otherwise 0

snez r? a(r?|num) 

Register = 1 if a != 0, otherwise 0

Branching

j int 

Jump execution to line a

Example:

j 0 # jump line 0

j label # jump to a label

label:
# your code here

jal int 

Jump execution to line a and store next line number in ra

Example:

jal provides a way to do function calls in IC10 mips

move r0 1000
move r1 0
start:
jal average
s db Setting r0
yield
j start

average:
add r0 r0 r1
div r0 r0 2
j ra # jump back

jr int 

Relative jump to line a

Branching / Device Pin

bdns d? a(r?|num) 

Branch to line a if device d isn't set

bdnsal d? a(r?|num) 

Jump execution to line a and store next line number if device is not set

bdse d? a(r?|num) 

Branch to line a if device d is set

bdseal d? a(r?|num) 

Jump execution to line a and store next line number if device is set

Example:

#Store line number and jump to line 32 if d0 is assigned.
bdseal d0 32

#Store line in ra and jump to label HarvestCrop if device d0 is assigned.
bdseal d0 HarvestCrop

brdns d? a(r?|num) 

Relative jump to line a if device is not set

brdse d? a(r?|num) 

Relative jump to line a if device is set

Branching / Comparison

bap a(r?|num) b(r?|num) c(r?|num) d(r?|num) 

Branch to line d if abs(a - b) <= max(c * max(abs(a), abs(b)), float.epsilon * 8)

bapal a(r?|num) b(r?|num) c(r?|num) d(r?|num) 

Branch to line c if a != b and store next line number in ra

bapz a(r?|num) b(r?|num) c(r?|num) 

Branch to line c if abs(a) <= max(b * abs(a), float.epsilon * 8)

bapzal a(r?|num) b(r?|num) c(r?|num) 

Branch to line c if abs(a) <= max(b * abs(a), float.epsilon * 8) and store next line number in ra

beq a(r?|num) b(r?|num) c(r?|num) 

Branch to line c if a == b

beqal a(r?|num) b(r?|num) c(r?|num) 

Branch to line c if a == b and store next line number in ra

beqz a(r?|num) b(r?|num) 

Branch to line b if a == 0

beqzal a(r?|num) b(r?|num) 

Branch to line b if a == 0 and store next line number in ra

bge a(r?|num) b(r?|num) c(r?|num) 

Branch to line c if a >= b

bgeal a(r?|num) b(r?|num) c(r?|num) 

Branch to line c if a >= b and store next line number in ra

bgez a(r?|num) b(r?|num) 

Branch to line b if a >= 0

bgezal a(r?|num) b(r?|num) 

Branch to line b if a >= 0 and store next line number in ra

bgt a(r?|num) b(r?|num) c(r?|num) 

Branch to line c if a > b

Example:

An example of a Schmitt trigger, turning on a device if the temperature is too low, and turning it off if it's too high and finally doing nothing if the temperature is within the desired range.

alias sensor d0
alias device d1

define mintemp 293.15
define maxtemp 298.15

start:
yield
l r0 sensor Temperature
# If the temperature < mintemp, turn on the device
blt r0 mintemp turnOn
# If the temperature > maxtemp, turn off the device
bgt r0 maxtemp turnOff
j start

turnOn:
s device On 1
j start
turnOff:
s device On 0
j start

bgtal a(r?|num) b(r?|num) c(r?|num) 

Branch to line c if a > b and store next line number in ra

bgtz a(r?|num) b(r?|num) 

Branch to line b if a > 0

bgtzal a(r?|num) b(r?|num) 

Branch to line b if a > 0 and store next line number in ra

ble a(r?|num) b(r?|num) c(r?|num) 

Branch to line c if a <= b

bleal a(r?|num) b(r?|num) c(r?|num) 

Branch to line c if a <= b and store next line number in ra

blez a(r?|num) b(r?|num) 

Branch to line b if a <= 0

blezal a(r?|num) b(r?|num) 

Branch to line b if a <= 0 and store next line number in ra

blt a(r?|num) b(r?|num) c(r?|num) 

Branch to line c if a < b

Example:

An example of a Schmitt trigger, turning on a device if the temperature is too low, and turning it off if it's too high and finally doing nothing if the temperature is within the desired range.

alias sensor d0
alias device d1

define mintemp 293.15
define maxtemp 298.15

start:
yield
l r0 sensor Temperature
# If the temperature < mintemp, turn on the device
blt r0 mintemp turnOn
# If the temperature > maxtemp, turn off the device
bgt r0 maxtemp turnOff
j start

turnOn:
s device On 1
j start
turnOff:
s device On 0
j start

bltal a(r?|num) b(r?|num) c(r?|num) 

Branch to line c if a < b and store next line number in ra

bltz a(r?|num) b(r?|num) 

Branch to line b if a < 0

bltzal a(r?|num) b(r?|num) 

Branch to line b if a < 0 and store next line number in ra

bna a(r?|num) b(r?|num) c(r?|num) d(r?|num) 

Branch to line d if abs(a - b) > max(c * max(abs(a), abs(b)), float.epsilon * 8)

bnaal a(r?|num) b(r?|num) c(r?|num) d(r?|num) 

Branch to line d if abs(a - b) <= max(c * max(abs(a), abs(b)), float.epsilon * 8) and store next line number in ra

bnan a(r?|num) b(r?|num) 

Branch to line b if a is not a number (NaN)

bnaz a(r?|num) b(r?|num) c(r?|num) 

Branch to line c if abs(a) > max (b * abs(a), float.epsilon * 8)

bnazal a(r?|num) b(r?|num) c(r?|num) 

Branch to line c if abs(a) > max (b * abs(a), float.epsilon * 8) and store next line number in ra

bne a(r?|num) b(r?|num) c(r?|num) 

Branch to line c if a != b

bneal a(r?|num) b(r?|num) c(r?|num) 

Branch to line c if a != b and store next line number in ra

bnez a(r?|num) b(r?|num) 

branch to line b if a != 0

bnezal a(r?|num) b(r?|num) 

Branch to line b if a != 0 and store next line number in ra

brap a(r?|num) b(r?|num) c(r?|num) d(r?|num) 

Relative branch to line d if abs(a - b) <= max(c * max(abs(a), abs(b)), float.epsilon * 8)

brapz a(r?|num) b(r?|num) c(r?|num) 

Relative branch to line c if abs(a) <= max(b * abs(a), float.epsilon * 8)

breq a(r?|num) b(r?|num) c(r?|num) 

Relative branch to line c if a == b

breqz a(r?|num) b(r?|num) 

Relative branch to line b if a == 0

brge a(r?|num) b(r?|num) c(r?|num) 

Relative jump to line c if a >= b

brgez a(r?|num) b(r?|num) 

Relative branch to line b if a >= 0

brgt a(r?|num) b(r?|num) c(r?|num) 

relative jump to line c if a > b

brgtz a(r?|num) b(r?|num) 

Relative branch to line b if a > 0

brle a(r?|num) b(r?|num) c(r?|num) 

Relative jump to line c if a <= b

brlez a(r?|num) b(r?|num) 

Relative branch to line b if a <= 0

brlt a(r?|num) b(r?|num) c(r?|num) 

Relative jump to line c if a < b

brltz a(r?|num) b(r?|num) 

Relative branch to line b if a < 0

brna a(r?|num) b(r?|num) c(r?|num) d(r?|num) 

Relative branch to line d if abs(a - b) > max(c * max(abs(a), abs(b)), float.epsilon * 8)

brnan a(r?|num) b(r?|num) 

Relative branch to line b if a is not a number (NaN)

brnaz a(r?|num) b(r?|num) c(r?|num) 

Relative branch to line c if abs(a) > max(b * abs(a), float.epsilon * 8)

brne a(r?|num) b(r?|num) c(r?|num) 

Relative branch to line c if a != b

brnez a(r?|num) b(r?|num) 

Relative branch to line b if a != 0

Other examples

Conditional functions cheatsheet

suffix	description	branch to line	branch and store return address	relative jump to line	set register
prefix:		b-	b-al	br-	s-
	unconditional	j	jal	jr
-eq	if a == b	beq	beqal	breq	seq
-eqz	if a == 0	beqz	beqzal	breqz	seqz
-ge	if a >= b	bge	bgeal	brge	sge
-gez	if a >= 0	bgez	bgezal	brgez	sgez
-gt	if a > b	bgt	bgtal	brgt	sgt
-gtz	if a > 0	bgtz	bgtzal	brgtz	sgtz
-le	if a <= b	ble	bleal	brle	sle
-lez	if a <= 0	blez	blezal	brlez	slez
-lt	if a < b	blt	bltal	brlt	slt
-ltz	if a < 0	bltz	bltzal	brltz	sltz
-ne	if a != b	bne	bneal	brne	sne
-nez	if a != 0	bnez	bnezal	brnez	snez
-nan	if a == NaN	bnan		brnan	snan
-nan	if a != NaN				snanz
-dns	if device d is not set	bdns	bdnsal	brdns	sdns
-dse	if device d is set	bdse	bdseal	brdse	sdse
-ap	if a approximately equals b	bap	bapal	brap	sap
-apz	if a approximately equals 0	bapz	bapzal	brapz	sapz
-na	if a not approximately equals b	bna	bnaal	brna	sna
-naz	if a not approximately equals 0	bnaz	bnazal	brnaz	snaz

All b- commands require target line as last argument, all s- commands require register to store result as first argument. All br- commands require number to jump relatively as last argument. e.g. breq a b 3 means if a=b then jump to 3 lines after.

All approximate functions require additional argument denoting how close two numbers need to be considered equal. E.g.: sap r0 100 101 0.01 will consider 100 and 101 almost equal (not more than 1%=0.01 different) and will set r0 to 1. The exact formula is if abs(a - b) <= max(c * max(abs(a), abs(b)), float.epsilon * 8) for -ap and is similar for other approximate functions.

https://en.wikipedia.org/wiki/Machine_epsilon
Example:

 FLT_EPSILON = 2^(−23) ≈ 1.19e−07;        float (32 bit)
 DBL_EPSILON = 2^(−52) ≈ 2.20e−16;        double (64 bit)

 if abs(100 - 101) <= max(0.01 * max(abs(100), abs(101)), float.epsilon * 8)
 if abs(-1) <= max(0.01 * 101), float.epsilon * 8)
 if 1 <= max(0.01 * 101, float.epsilon * 8)

 if 1 <= max(1.01, FLT_EPSILON * 8)
 if 1 <= max(1.01, DBL_EPSILON * 8)

 if 1 <= max(1.01, 1.19e−07 * 8)
 if 1 <= max(1.01, 2.20e−16 * 8)

 if 1 <= max(1.01, 0.000000952)
 if 1 <= max(1.01, 0.00000000000000176)

 if 1 <= 1.01   TRUE   1
 if 1 <= 1.01   TRUE   1

Device Variables

---

Activate

1 if device is activated (usually means running), otherwise 0

l r0 d0 Activate # sets r0 to 1 if on or 0 if off

AirRelease

Charge

The current charge the device has.

ClearMemory

When set to 1, clears the counter memory (e.g. ExportCount). Will set itself back to 0 when triggered.

Color

▇▇▇  0 (or lower) = Blue

▇▇▇ 1 = Grey

▇▇▇ 2 = Green

▇▇▇ 3 = Orange

▇▇▇ 4 = Red

▇▇▇ 5 = Yellow

▇▇▇ 6 = White

▇▇▇ 7 = Black

▇▇▇ 8 = Brown

▇▇▇ 9 = Khaki

▇▇▇ 10 = Pink

▇▇▇ 11 (or higher) = Purple

CompletionRatio

ElevatorLevel

ElevatorSpeed

Error

1 if device is in error state, otherwise 0

ExportCount

How many items exporfted since last ClearMemory.

Filtration

The current state of the filtration system. For example filtration = 1 for a Hardsuit when filtration is On.

Harvest

Performs the harvesting action for any plant based machinery.

s d0 Harvest 1 # Performs 1 harvest action on device d0

Horizontal

HorizontalRatio

Idle

ImportCount

Lock

Maximum

Mode

On

Open

Output

Plant

Performs the planting operation for any plant based machinery.

s d0 Plant 1 # Plants one crop in device d0

PositionX

PositionY

PositionZ

Power

PowerActual

PowerPotential

PowerRequired

Pressure

PressureExternal

PressureInteral

PressureSetting

Quantity

Total quantity in the device.

Ratio

Context specific value depending on device, 0 to 1 based ratio.

RatioCarbonDioxide

RatioNitrogen

The ratio of nitrogen in device atmosphere.

RatioOxygen

The ratio of oxygen in device atmosphere.

RatioPollutant

The ratio of pollutant in device atmosphere.

RatioVolatiles

The ratio of volatiles in device atmosphere.

RatioWater

The ratio of water in device atmosphere.

Reagents

RecipeHash

ReferenceId

Unique Identifier of a Device, this value is different for every device in a save.

RequestHash

RequiredPower

Setting

SolarAngle

Solar angle of the device.

l r0 d0 SolarAngle # Sets r0 to the solar angle of d0.

Temperature

TemperatureSettings

TotalMoles

VelocityMagnitude

VelocityRelativeX

VelocityRelativeY

VelocityRelativeZ

Vertical

Vertical setting of the device.

VerticalRatio

Ratio of vertical setting for device.

Volume

Returns the device atmosphere volume

Slot Variables

In general (always?) slots are assigned as follows.

Slot 0: Import

Slot 1: Export

Slot 2: Inside Machine

---

Occupied

ls r0 d0 2 Occupied #Stores 1 in r0 if d0 has more seeds

ls vOccupied dThisVictim 2 Occupied #stores 1 in vOccupied if dThisVictim has more seeds

OccupantHash

Quantity

Damage

Efficiency

Health

Growth

ls r0 d0 0 Growth # Store the numerical growth stage of d0 in r0

Pressure

Temperature

Charge

ChargeRatio

Class

PressureWaste

PressureAir

MaxQuantity

Mature

ls r0 d0 0 Mature # Store 1 in r0 if d0 has a mature crop

ls vMature dThisVictim 0 Mature # Store 1 in vMature if dThisVictim has a mature crop

ReferenceId

Unique Identifier of a Device, this value is different for every device in a save.

---

Examples

Previous examples were obsolete due to game changes, or confusing, they have been moved into the Discussions section

---

Harvie automation

This script uses the batch instruction sb ... to control all Harvie devices on the network. But only one Harvie and one Tray will be the master and have their values read, the rest of the Harvies will repeat exactly what this unit does. Some problems with this design is that different types of crops mature at different speeds, and if seeds were manually planted and the master unit recieved the first seed, the harvesting action will be performed too early on all the other plants since they are growing a few seconds slower.

alias dHarvie d0
alias dTray d1

alias rHarvieHash r8
alias rTrayHash r9
l rHarvieHash dHarvie PrefabHash
l rTrayHash dTray PrefabHash

main:
yield
#read plant data from the Tray
ls r0 dTray 0 Mature
#harvestable plants return 1, young plants return 0
#nothing planted returns -1
beq r0 -1 plantCrop
beq r0 1 harvestCrop
ls r0 dTray 0 Seeding
#seeds available returns 1, all seeds picked returns 0
#plants too young or old for seeds returns -1
beq r0 1 harvestCrop
j main

plantCrop:
#stop the planting if no seeds available
#otherwise it will plant nothing repeatedly
ls r0 dHarvie 0 Occupied
beq r0 0 main
sb rHarvieHash Plant 1
j main

harvestCrop:
sb rHarvieHash Harvest 1
j main

### End Script ###

---

Solar Panel 2-axis tracking

#2 Axis Solar Tracking adapted from CowsAreEvil.
#Place all panels in uniform manner.
#Set one to 15 Vertical(Min value). 0 Horizontal.
#Take note direction panel faces.
#Place daylight sensor flat pointing in the direction
#the panel now faces. (Cable port facing opposite)

#Alias the sensor to d0
alias sensor d0

# define the Panel variants
define Heavy -934345724
define HeavyDual -1545574413
define Solar -2045627372
define SolarDual -539224550

start:
yield
#Check for daylight.
l r0 sensor Activate
beqz r0 reset
#Read the Horizontal data.
l r0 sensor Horizontal
#Set batch to the panels.
sb Heavy Horizontal r0
sb HeavyDual Horizontal r0
sb Solar Horizontal r0
sb SolarDual Horizontal r0
#Read the Vertical data and subtract 90
l r0 sensor Vertical
sub r0 90 r0
#Set batch to the panels.
sb Heavy Vertical r0
sb HeavyDual Vertical r0
sb Solar Vertical r0
sb SolarDual Vertical r0
j start

reset:
yield
sb Heavy Horizontal 270 #Edit this to face sunrise.
sb HeavyDual Horizontal 270 #Edit this
sb Solar Horizontal 270 #Edit this
sb SolarDual Horizontal 270 #Edit this
sb Heavy Vertical 0
sb HeavyDual Vertical 0
sb Solar Vertical 0
sb SolarDual Vertical 0
sleep 10
j start

---

Example experiment: how many lines of code are executed each tick?

To determine this, a script without yield will be used. It should have as few lines as possible (so no labels are used, but a reset value at the top will be needed) and count the number of lines, the IC Housing will be used to display the result.

move r0 1   #the first line has number 0
add r0 r0 3
s db Setting r0
j 1

Result (the numbers appears every 0.5 seconds):
127
256 (+129)
385 (+129)
511 (+126)
640 (+129)
769 (+129)
895 (+126)
1024 (+129)
1153 (+129)

There is a repeating +129, +129, +126 sequence, a hint that the real value is 128. Which also happens to be the number of lines in a script, which makes sense. A variation of this experiment will show that empty rows are also counted towards this number.

---

Links

---

• Stationeers online IC10 Emulators so you can develop your code without repeatedly dying in game
  • [1] Stationeers Code Simulator
  • [2] Stationeers IC10 Editor & Emulator - A feature packed code editor for Stationeers IC10 code, paired with a robust debugger and emulator. Edit, test, and share code.
  • [3] Stationeering provides a simulation of the IC10 chip inside Stationeers. IDE with error checking, full visibility of stack and registers.
• [4] EASy68K is a 68000 Structured Assembly Language IDE.
• [5] syntax highlighting for IC10 MIPS for Visual Studio Code (updated Feb 10th 2022)
• [6] syntax highlighting for IC10 MIPS for KDE kwrite/kate text editor
• [7] syntax highlighting for IC10 MIPS for Notepad++
• [8] syntax highlighting for IC10 MIPS for Notepad++ (updated: 11/08/2022)
• [9] syntax highlighting for IC10 MIPS for Notepad++ (updated: 23/03/2024)

---

Index

---

Functions

• abs
• add
• alias
• and
• beq
• bgez
• bgtz
• blez
• bltz
• bne
• breq
• brgez
• brgtz
• brlez
• brltz
• brne
• cell
• div
• exp
• floor
• j
• jr
• l
• log
• ls
• max
• min
• mod
• move
• mul
• nor
• or
• rand
• round
• s
• slt
• sqrt
• sub
• trunc
• xorxor
• yield
• #

Device Variables

• Activate
• AirRelease
• Charge
• CLearMemory
• Color
• CompletionRatio
• ElevatorLevel
• ElevatorSpeed
• Error
• ExportCount
• Filtration
• Harvest
• Horizontal
• HorizontalRatio
• Idle
• ImportCount
• Lock
• Maximum
• Mode
• On
• Open
• Output
• Plant
• PositionX
• PositionY
• PositionZ
• Power
• PowerActual
• PowerPotential
• PowerRequired
• Pressure
• PressureExternal
• PressureInteral
• PressureSetting
• Quantity
• Ratio
• RatioCarbonDioxide
• RatioNitrogen
• RatioOxygen
• RatioPollutant
• RatioVolatiles
• RatioWater
• Reagents
• RecipeHash
• RequestHash
• RequiredPower
• Setting
• SolarAngle
• Temperature
• TemperatureSettings
• TotalMoles
• VelocityMagnitude
• VelocityRelativeX
• VelocityRelativeY
• VelocityRelativeZ
• Vertical
• VerticalRatio
• Volume

Slot Variables

• Occupied
• OccupantHash
• Quantity
• Damage
• Efficiency
• Health
• Growth
• Pressure
• Temperature
• Charge
• ChargeRatio
• Class
• PressureWaste
• PressureAir
• MaxQuantity
• Mature