SD6830 datasheet(24/34 Pages) AUK

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KSI-W002-000

IFEQU @HL

Binary code

00001111

Syntax

[<label>] IFEQU @HL

Operation

(A) = M[(HL)]

Flags

CY : Unaffected

SF : Set to one if equal, cleared otherwise

Words/Cycles

1/1

Description

Compares the contents of accumulator with the contents of data

memory addressed by registers H and L.

Example

LDA

; Load 14 to A, and 14 must be decimal number

SETB

; Sets H to one

LDL

; Loads 4 to L

IFEQU @HL ; Compares 14 with M[(14)]

JMP 050

; Jump to 050 if not equal

JMP 060

; Jump to 060 if equal

IFEQU n

Binary code

00001110

0111xxxx

Syntax

[<label>] IFEQU n

Operation

(A) = n, n = 0 ~15 ( n must be decimal number )

Flags

CY: Unaffected

SF: Set to one if equal, cleared otherwise

Words/Cycles

2/2

Description

: Compares the contents of accumulator with an immediate data.

Example

IFEQU 15

; Compare the contents of accumulator with 15

JMP

070

; Jump to 070 if not equal

JMP

080

; Jump to 080 if equal

INC L

Binary code

00100010

Syntax

[<label>] INC L

Operation

(L) ← (L) + 1

Flags

CY : Unaffect

SF:As a result of execution, set to one if the contents

of register L are zero, cleared otherwise.

Words/Cycles

1/1

Description

The contents of register L are incremented by one.

Example

LDL

; Load 14 to L

INC

; The contents of L are incremented by one

INC

; The contents of L are incremented by one

JMP

090 ; It is skipped because the contents of L is

JMP

0A0

; Jump to 0A0

SD6830

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