HCS12 datasheet(195/452 Pages) FREESCALE

195 / 452 page

Glossary

S12CPUV2 Reference Manual, Rev. 4.0

Freescale Semiconductor

195

Operation:

(SP) – $0002

⇒ SP

RTNH : RTNL ⇒ M(SP) : M(SP + 1)

Subroutine Address

⇒ PC

Description:

Sets up conditions to return to normal program flow, then transfers control

to a subroutine. Uses the address of the instruction following the JSR as a

return address.

Decrements the SP by two to allow the two bytes of the return address to be

stacked.

Stacks the return address. The SP points to the high order byte of the return

address.

Calculates an effective address according to the rules for extended, direct,

or indexed addressing.

Jumps to the location determined by the effective address.

Subroutines are normally terminated with an RTS instruction, which

restores the return address from the stack.

JSR

Jump to Subroutine

JSR

CCR Details:

HIN

––––––––

Source Form

Address

Mode

Object Code

Access Detail

HCS12

M68HC12

JSR opr8a

JSR opr16a

JSR oprx0_xysp

JSR oprx9,xysp

JSR oprx16,xysp

JSR [D,xysp]

JSR [oprx16,xysp]

DIR

EXT

IDX

IDX1

IDX2

[D,IDX]

[IDX2]

17 dd

16 hh ll

15 xb

15 xb ff

15 xb ee ff

15 xb

15 xb ee ff

SPPP

PPPS

fPPPS

fIfPPPS

PPPS

fPPPS

fIfPPPS

HCS12 Datasheet(PDF) 195 Page - Freescale Semiconductor, Inc

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