GE 90-30/20/Micro manual I0001 Srch

4

Example 1:

The array AR is defined as memory addresses %R0001 — %R0005. When EN is ON, the portion of the array between %R0004 and %R0005 is searched for an element whose value is equal to IN. If %R0001 = 7, %R0002 = 9, %R0003 = 6, %R0004 = 7, %R0005 = 7, and %R0100 = 7, then the search will begin at %R0004 and conclude at %R0004 when FD is set ON and a 4 is written to %R0101.

	_____
%I0001
—— ———SRCH_
	EQ_
	INT	%Q0001
%R0001—AR FD————————————————————————————————————————————————————————————( )—
	LEN
	00005
CONST —NX NX— %R0101
00003
%R0100—IN
	_____

Example 2:

Array AR is defined as memory addresses %AI0001 — %AI0016. The values of the array elements are 100, 20, 0, 5, 90, 200, 0, 79, 102, 80, 24, 34, 987, 8, 0, and 500. Initially, %AQ0001 is 5. When EN is ON, each sweep will search the array looking for a match to the IN value of 0. The first sweep will start searching at %AI0006 and find a match at %AI0007, so FD is ON and %AQ0001 is 7. The second sweep will start searching at %AI0008 and find a match at %AI0015, so FD remains ON and %AQ0001 is 15. The next sweep will start at %AI0016. Since the end of the array is reached without a match, FD is set OFF and %AQ0001 is set to zero. The next sweep will start searching at the beginning of the array.

	_____
%I0001
—— ———SRCH_
	EQ_
	INT	%M0001
%AI0001—AR FD————————————————————————————————————————————————————————————( )—
	LEN
	00016
%AQ0001—NX NX—%AQ0001
CONST —IN
0000	_____

GFK-0467K Chapter 4 Series 90-30/20/Micro Instructions Set 4-93