Elmo HARSFEN0602, HARmonica EOL End Of Line, Foritr for Loop Iteration, Algorithm itr iterator

HARSFEN0602ElmoHARmonicaSoftwareManual			PRELIMINARYDRAFT
			flags
Addressing modes	Absent
Promotion	Int / Float
	Executes as
	(float) Int / Float
Output type	Int / Int Int
	Int / Float	Float
	Float / Float	Float
Imposes end of line	No

7.7.5EOL – End Of Line

Purpose:
Indicate this is end of line to the Harmonica environment.
Algorithm:	→
Zeroes line execution flag.
Attributes:	→→
Attribute	Value	Comment
Op code		May change in future
		versions
Number of arguments	None
Argument types	N.A.
Addressing modes	N.A.
Promotion	N.A.
Output type	N.A.
Imposes end of line	No

7.7.6FORITR – FOR Loop Iteration

Purpose:

Handle FOR loop – check condition, if true update iterator and execute loop body otherwise break loop and continue program.

Algorithm: itr – (iterator)

(SP-2) itr (set iterator with start value)

(SP-1) →step

(SP) target (final value, to which itr is tested)

if (step > 0)

if (itr > target) free top three entries at the stack and jump end of loop else if (step < 0)

if (itr < target) free top three entries at the stack and jump end of loop else

error (step = 0 , meaning infinite loop)

(SP-2) + step	(SP-2) ( increment iterator by step)
Attributes(PC is→incremented and loop body is executed)

Attribute		Value	Comment
Op code			May change in future
			versions
Number of arguments		2
Argument Type1		Signed short integer
Argument Type2		Signed short integer
	→
Addressing mode1		Immediate2	Jump address to the end of

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