Elmo HARSFEN0602, HARmonica Syssubj Jump To System Subroutine, Unarynot Logical not Operator

	HARSFEN0602ElmoHARmonicaSoftwareManual									PRELIMINARYDRAFT
	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
7.7.37		SYSSUBJ – Jump To System Subroutine
	Purpose:					→	→
	Call to system function.
	Algorithm:
	FuncTable	(list of functions handlers)
	FuncTable[Op1]() (SP)			(put return value				→at top of stack)
	SP SP +1
	Attributes
	Attribute				Value					Comment
	Op code									May change in future
										versions
	Number of arguments				1
	Argument types				Unsigned char integer
		→
	Addressing modes		→		Immediate1					Index of system function in
	→									function table
	Promotion				N.A.
	Output type				N.A.					Output argument is at top of
										stack.
										Type set according to service
										function .
	Imposes end of line				No

7.7.38UNARY_NOT - Logical NOT Operator (!)

Purpose:

If number is non-zero condition is false otherwise condition is true.

Algorithm:

! (SP) (SP)

Attributes

Attribute	Value		Comment
Op code			May change in future
			versions
Number of arguments	None
Argument types	N.A.		Argument type must be
→			integer (set according to
			stack member flag)
Addressing modes	Absent
Promotion	N.A.
Output type	!Int	Int
Imposes end of line	No
	→

91