SD6830 Просмотр технического описания (PDF) - AUK -> KODENSHI CORP

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SD6830

4BIT MICROCONTROLLER

AUK -> KODENSHI CORP 

SD6830

9.3 Instruction Descriptions

ADD n

Binary code : 0110xxxx

Syntax

: [<label>] ADD n

Operation

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

Flags

: CY: Unaffected. SF: Set to one if carry occurs, cleared otherwise.

Words/Cycles : 1/1

Description : Adds an immediate data to the accumulator and stores the result in

the accumulate.

Example

: ADD 8

; Add 8 to A.

JMP 035 ; Jump to 035 if 0≤A≤7

JMP 05F ; Jump to 05F if 8≤A≤15

ADDC @HL

Binary code 00010000

Syntax

: [<label>] ADDC @HL

Operation

: (A) ← (A) + M[(HL)] + (CY), (CY) ← Carry

Flags

: CY: Set on carry-out of (A) + M[(HL)] + (CY)

SF: Unaffected

Words/Cycles : 1/1

Description : Adds the contents of the accumulator, the contents of data memory

addressed by registers H and L, and the carry bit. It stores the result in

the accumulator and the carry flag.

Example

: CLRB CY ; Clear CY to zero

LDA

5 ; Load 5 to A

CLRB H ; Clear H to zero

LDL

6 ; Load 6 to L

ADDC @HL ; Add the content of A, M[(06)], and the content of CY

CAL addr

Binary code : 11xxxxxx

Syntax

: [<label>] CAL addr

Operation : (SK1) ← (SK0), (SK0) ← (PC) + 1, (PCL) ← addr, addr = 000 ~ 03F

( addr must be hexadecimal number )

Flags

: CY: Unaffected SF: Unaffected

Words/Cycles : 1/1

Description : Calls a subroutine located at the indicated address and pushes the current

contents of the program counter to the top of stack. The indicated address

must be within the current page.

Example

: CAL 100 : Call subroutine located at the 100. The 100 must be logical

address and within the current page.

KSI-W002-000

20

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