Elmo HARSFEN0602, HARmonica software manual MLT Multiply, MOV Assignment Operator =

HARSFEN0602ElmoHARmonicaSoftwareManual PRELIMINARYDRAFT

Purpose:

Increase stack pointer with the value given as an argument and zeroes the new entries to stack.

Algorithm:

SP SP + OP1

Attributes

Attribute	Value	Comment
Op code		May change in future
		versions
Number of arguments	1
Argument type	Unsigned char integer
Addressing modes	Immediate1	Number of new entries to
→		stack
Promotion	N.A.
Output type	N.A.
Imposes end of line	No

7.7.19MLT – Multiply

Purpose:

Multiply two numbers (top two entries at the stack).

	Algorithm:
	(SP) * (SP-1) (SP-1)
	SP	SP-1
	Attributes
	Attribute			Value			Comment
	Op code						May change in future
							versions
	Number of arguments			None
	Argument types			N.A.			Both arguments types are set
	→		→				according to stack members
							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
7.7.20		MOV – Assignment Operator (=)
	Purpose:				→
	Assignment operator (=) between global/local→variables, assign value can also be constant or value from
	stack.					→
	Algorithm:
	OP1	OP2

→

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