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Human Ressource Machine - Language Specification

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.