HP 50g Graphing, 48gII Graphing manual Tests

These instructions	Are equivalent to
{	*.Beg3
{	*.Beg2
{	*.Beg1
UP2	GOTO.Beg2
UP3	GOTO.Beg3
EXIT1	GOTO.End1
EXIT3	GOTO.End3
}	*.End1
}	*.End2
}	*.End3

Notes:

1.EXIT1 is equivalent to EXIT, and UP1 is equivalent to UP.

2.The same rules apply in ARM mode: EXITGE3 for example is a BGE for the exit label 3 blocks down Using SKELSE, SKEC, SKENC, SKLSE instructions, two blocks create an IFNOTTHENELSE structure.

These	Are equivalent to	Or in highlevel
instructions		language
?A=0.A	?A=0.A GOYES.Beg2	IF NOT A=0 THEN
SKIPYES	*.Beg1	BEGIN
{	GOTO.End2 % and not	...
EXIT	End1	...
UP	GOTO.Beg1	END
}	*.End1	ELSE
SKELSE	GOTO.End2	BEGIN
{	*.Beg2	...
A+1.A	A+1.A	...
EXIT	GOTO.End2	...
UP	GOTO.Beg2	END
}	*.End2

Notes:

1.SKELSE places a GOTO between the 2 blocks, SKEC places a GOC, SKENC a GONC and SKLSE places nothing.

2.UPs are compiled directly when encountered while EXITs and block openings are compiled later on. You can not have more than 64 pending EXITs and block openings simultaneously.

Tests

A test instruction (?A=0.A) may be followed by:

• A GOYES Label, → Label or > Label instruction

• A > { or → { instruction. In this case, the test is inverted and a skip block is open.

•A RTY or RTNYES instruction.

•A SKIPYES { or { instruction. In this case, a skip block is open.

•A GOTO, GOTOL, GOVLNG, GOSUB, GOSUBL or GOSBVL. In this case, the test is inverted and a proper

jump instruction is generated (ie: ?A=B.A GOTO A is compiled as ?A#B.A { GOTO A }.

•A EXIT or UP.

622 The Development Library