Jsr Instruction - Renesas Hitachi H8S/2194 Series Hardware Manual

27.3.5

JSR Instruction

(1) JSR Instruction (Register indirect)
When the trap address is the next instruction to the JSR instruction and the addressing mode
is a register indirect, transition is made to the address trap interrupt after prefetching the
instruction at the branch. The address to be stacked is 02C8.
JSR
instruc-
tion
pre-fetch
Address bus
029A
Interrupt
request
signal
(2) JSR Instruction (Memory indirect)
When the trap address is the next instruction to the JSR instruction and the addressing mode
is memory indirect, transition is made to the address trap interrupt after prefetching the
instruction at the branch. The address to be stacked is 02EA.
JSR
instruc-
tion
pre-fetch
Address bus
0294
Interrupt
request
signal
Rev. 2.0, 11/00, page 602 of 1037
NOP MOV
Stack
instruc- instruc-
saving
tion tion
pre-fetch pre-fetch
029C 02C8 SP-2 SP-4
JSRexecution
Figure 27.11 JSR Instruction (Register indirect)
NOP
Data
Stack
instruc-
tion
fetch
saving
pre-fetch
0296 006C 006E SP-2 SP-4 02EA
JSR execution
Figure 27.12 JSR Instruction (Memory Indirect)
Start of
exception
handling
*
02CA
NOP
Start of
instruc-
exception
tion
pre-fetch
handling
02EC
(@ER0 = H'02C8)
029A JSR @ER0
029C NOP
029E NOP
: :
02C8 MOV.W R4, @OUT
02CE NOP
* Trap setting address
The underlines address is the
one to be actually stacked.
006C H'02EA
: :
0294 JSR @@H'6C:8
*
0296 NOP
0298 NOP
: :
02EA NOP
02EC NOP
* Trap setting address
The underlines address is the
one to be actually stacked.