DP80390 datasheet(49/84 Pages) DCD

Il numero della parte	DP80390

Spiegazioni elettronici	Pipelined High Performance Microcontroller Instructions set details ver 3.10

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DP80390 Instructions set details

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3.22.

LCALL *

3.22.1.

LARGE

Instruction:

LCALL addr16

Function:

Long call

Description:

LCALL calls a subroutine located at the indicated address. The

instruction adds three to the program counter to generate the address

of the next instruction and then pushes the 16-bit result onto the stack

(low byte first), incrementing the stack pointer by two. The high-order

and low-order bytes of the PC are then loaded, respectively, with the

second and third bytes of the LCALL instruction. Program execution

continues with the instruction at this address. The subroutine may

therefore begin anywhere in the full 64 kB program memory address

space. No flags are affected.

Operation:

(PC)

← (PC) + 3

(SP)

← (SP) + 1

((SP))

← (PC7-0)

(SP)

← (SP) + 1

((SP))

← (PC15-8)

(PC)

← addr15-0

Bytes:

Cycles:

Encoding:

address 15..8

address 7..0

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