Elmo HARSFEN0602, HARmonica software manual SHR Shift Right, SHL Shift Left

HARSFEN0602ElmoHARmonicaSoftwareManual		PRELIMINARYDRAFT
Imposes end of line	No

7.7.32SETINDEX

Purpose:

Set value to array variable defined in data segment.

Algorithm:

DataSeg + Op1 Arr (array address)

(SP)			→
	→
(SP –1) Val (assign value)
		→
Arr[Ind] = val ; (enter value to array)
Attributes
Attribute				Value	Comment
Op code					May change in future
					versions
Number of arguments				1
Argument type				Signed short integer
Addressing modes				Mem_Direct	Address of array in data
					segment (ram) .
					Array index is at top of stack
					.
					Set value is at one entry
					below top of stack .
Promotion				N.A.
Output type				N.A.	Type of assign value from
					stack
Imposes end of line				No

7.7.33SHR – Shift Right

Purpose:

Shift right the number below top of stack by the number at the top of stack.

	Algorithm:
	(SP-1) >> (SP) (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 must
	→		→			be integer (set according to
						stack members flags)
	Addressing modes			Absent
	Promotion			N.A.
	Output type			Int >> Int	Int
	Imposes end of line			No
7.7.34		SHL – Shift Left			→
	Purpose:

89