Contents

7

Flags

92

 

Examples

93

 

Example: Branching and Looping

93

 

Example: Flags

95

 

Further Information

97

 

GoTo

97

 

Looping

98

 

Conditional Branching

98

 

Flags

98

 

The System Flags: Flags 8 and 9

99

 

Section 9: Subroutines

101

 

The Mechanics

101

 

GoTo Subroutine and Return

101

 

Subroutine Limits

102

 

Examples

102

 

Further Information

105

 

The Subroutine Return

105

 

Nested Subroutines

105

 

Section 10: The Index Register and Loop Control

106

 

The V and % Keys

106

 

Direct Versus Indirect Data Storage With

 

 

The Index Register

106

 

Indirect Program Control With the Index Register

107

 

Program Loop Control

107

 

The Mechanics

107

 

Index Register Storage and Recall

107

 

Index Register Arithmetic

108

 

Exchanging the X-Register

108

 

Indirect Branching With V

108

 

Indirect Flag Control With V

109

 

Indirect Display Format Control With V

109

 

Loop Control with Counters: I and e

109

 

Examples

111

 

Examples: Register Operations

111

 

Example: Loop Control With s

112

 

Example: Display Format Control

114

 

Further Information

115

 

Index Register Contents

115

 

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HP 15c Scientific manual Subroutines