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tags: Wiki
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# Guide to Chemical Assembler

## Introduction
The Chemical Assembler is a programmable machine for automating creation of different reagents. It uses a language inspired by Intel's x86 assembly syntax. The machine can be upgraded to increase it's speed.

## Slots and chemical holder
The chemical assembler has 14 "slots" and a chemical holder, slots are internal beakers with varying capacity and functionality.
The slots go as follows

+--+--+--+
|I1|I2|I3|
+--+--+--+--+--+
|A1|A2|A3|  |  |
+--+--+--+  |  |
|B1|B2|B3|H |O |
+--+--+--+  |  |
|C1|C2|C3|  |  |
+--+--+--+--+--+

The chemical holder has a reagent capacity of 100 units and is used for transfering reagents from slot to slot by using the `GET`, `PUT`, and `FLT` instructions.

### Main slots
The slots A1, A2, A3, B1, B2, B3, C1, C2 and C3 are called main slots, these slots don't have any kind of special functionality.
Each main slot has a capacity of 100 units.

### Input slots
The slots I1, I2, and I3 are called input slots, these slots can be used just like the main slots and have the same capacity, but they can also take reagents from the plumbing inputs in the machine. When rotated so the output side of the machine is up the inputs are I1, I2, and I3 from left to right.

### Heater slot
The slot H is the heater, this slot has a capacity of 300 units and can be used to heat reagents inside it to the temperature set by the `TMP` instruction.

### Output slot
The slot O is the output, this slot has a capacity of 300 units and can be extracted from via plumbing or by using a beaker or other reagent container on the machine.

## Language
As mentioned the Chemical Assembler uses an assembly inspired language henceforth dubbed "chemical assembly".

### Syntax
Chemical assembly's syntax is fairly simple, for example:

.definition value
label:
    instruction definition    ; comment

In this example we can see a .definition, a label, an instruction, and a comment.
#### `.definition`
Definitions replace the name of the definition with value in instruction arguments and ONLY in instruction arguments, you can't use these to change the name of instructions.
Example:

.a b                ; Define a as b
    instruction a   ; On this line the "a" will be replaced
                    ; with "b" due to the definition
                    ; which means this will be executed as if
                    ; it was "instruction b"

#### `label:`
Labels are used with J* (JMP, JSF, JSE, etc) instructions to change the program execution position.
Example:

    JMP a    ; JuMP to label "a".
b:
    JMP c    ; JuMP to label "c".
a:
    JMP b    ; JuMP to label "b".
c:
    INT      ; INTerrupt, stops execution.

In the example the program will execute the first line `JMP a`, which causes it to change the execution position to where the `a:` label is, then it will continue to the next line `JMP b`, which changes the execution position to where the `b:` label is, and so forth.

#### `instruction`
Any word without the special characters `:` or `.` will be considered an instruction. Ill leave the example for your imagination as you have already seen instructions in the prior examples.

### Instructions
The instructions you can use in the chemical assembly language are as follows:

MOV [slot]                - Moves to the slot given as an argument
SYN [chemical], [amount]  - Synthesises an amount of a chemical to the current slot
GET [amount]              - Moves an amount of chemicals from current slot to holder tank
PUT [amount]              - Moves an amount of chemicals from holding tank to current slot
REM [amount]              - Removes amount of chemicals from current slot
TMP [temperature]         - Sets wanted heater temperature
FLT [chemical]            - Filters all of chemical into holding tank
INT                       - Interrupts execution (stops the program)
JMP [label]               - Unconditional jump to label
JSF [label]               - Jumps to label if current slot is full
JSE [label]               - Jumps to label if current slot is empty
JSA [label]               - Jumps to label if current slot is acidic
JSB [label]               - Jumps to label if current slot is basic
JSR [label]               - Jumps to label if current slot is reacting
JTC [label]               - Jumps to label if heater is at wanted temperature (with an error margin of 0.15)

### Examples

Oil production until output is full:

.amount 25
OIL:  MOV B2                  ; Set current slot to B2
      SYN carbon, amount      ; Synthesise carbon to current slot (B2)
      SYN hydrogen, amount    ; Synthesise hydrogen
      SYN weldingfuel, amount ; Synthesise welding fuel
WR:   JSR WR                  ; Wait until reaction has stopped
      GET 100                 ; Take 100 units out of current slot to holding tank
      MOV O                   ; Set current slot to O(utput)
      PUT 100                 ; Take 100 units out of holding tank and put to current slot
      JSF Q                   ; Jump to Q if current slot is full
      JMP OIL                 ; Jump to OIL
Q:    INT                     ; Interrupt/Exit program