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Rev. 2.0, 11/00, page 605 of 1037
(2) SLEEP Instruction 2
When the trap address is the SLEEP instruction and the instruction execution cycle
immediately preceding the SLEEP instruction is that of 1 state 2 states or more and prefetch
occurs in the last state, this puts in the SLEEP mode after execution of the SLEEP
instruction, and the SLEEP mode is cancelled by the address trap interrupt and transition is
made to the exception handling. The address to be stacked is 0264.
Address bus
Interrupt
request
signal
Start of
exception
handling
0260 0262
SP-2 SP-4
0264
0260 NOP
0262 SLEEP
0264 NOP
0266 NOP
: :
*
NOP
execution
SLEEP
execution
SLEEP
mode
NOP
instruc-
tion
pre-fetch
SLEEP
instruc-
tion
pre-fetch
NOP
instruc-
tion
pre-fetch
*
Trap setting address
The underlines address is the
one to be actually stacked.
Figure 27.17 SLEEP Instruction (2)
(3) SLEEP Instruction 3
When the trap address is the next instruction to the SLEEP instruction, this puts in the
SLEEP mode after execution of the SLEEP instruction, and the SLEEP mode is cancelled by
the address trap interrupt and transition is made to the exception handling. The address to be
stacked is 0282.
Address bus
Interrupt
request
signal
Start of
exception h
andling
0280
SP-2 SP-4
0282
027E NOP
0280 SLEEP
0282 NOP
0284 NOP
: :
*
SLEEP
execution
SLEEP mode
SLEEP
instruc-
tion
pre-fetch
NOP
instruc-
tion
pre-fetch
*
Trap setting address
The underlines address is the
one to be actually stacked.
Figure 27.18 SLEEP Instruction (3)
Содержание Hitachi H8S/2191
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