Human Ressource Machine - Language Specification

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General

• Turysembler is case sensitive
• Whitespace before any command will be ignored
• Trailig whitespace will be ignored
• There a no literals of any kind. Therefore, a number ALWAYS represents the index of a floor tile / memory cell. It is always possible to surround a number by square brackets to use it as a pointer variable.

Comments

• Comments start with an '#'
• It's recommended to not write a comment to the same line as an instruction. It might work some times, but it will certainly crash at some other times.
• Comments will be compiled, too. They will be transformed into HRM-Comments

Single instructions

• push <num> - saves ACC to field

• pull <num> - sets ACC to value of field

• incr <num> - increments value of field by 1

• decr <num> - decrements value of field by 1

• <num> = <arithmetic operations>

  • saves the result of the arithmetic operation to field

Arithmetic operations

• <num1> + <num2>
  • addition of values
• <num1> * <num2> | <num3>
  • multiplications of fields and . The third field will be used as an temporary storage. So make shure to choose a field no loger needed, hence it will be overwritten.

Loops

• Start each loop with a loop instruction
• Loops can be closed by a repeat-instruction or by an endif instruction followed by a condition.
• "repeat-loops" will never be stoped -> endless
• "endif-loops" will be stoped once the condition is TRUE

Conditions

• implemented conditions are:
  • <num1> = <num2>
  • <num1> < <num2>
  • <num1> > <num2>
• return TRUE if the expression is true

Conditional branching

Syntax:

if <condition>
    <instructions...>
else
    <instructions...>
fi

The else block is needed, but may be empty.