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CHAPTER 3 INTERRUPT
3.6 Interrupts by Extended Intelligent I/O Service (EI
3.6.4
Procedure for Use of Extended Intelligent I/O Service (EI
To use extended intelligent I/O service (EI
peripheral function, interrupt control register (ICR), and other requirements must be set
up.
■ Procedure for Use of Extended Intelligent I/O Service (EI
Figure 3.6-8 shows the EI
Figure 3.6-8 Procedure for Use of Extended Intelligent I/O Service (EI
Processing by Software
: EI
ISE
S1,S0
: EI
80
2
OS software and the process by hardware.
START
Setting System stack area
2
Setting EI
OS descriptor
Initializing Peripheral function
Setting Interrupt control
register (ICR)
Setting Operation start
set interrupt enable bit of
internal resource
Setting ILM, I in PS
User program execution
(Branch to Interrupt vector)
Resetting expanded
intelligent I/O service
(Changing channel etc.)
Data processing during buffer
RETI
2
OS enable bit of Interrupt control register (ICR)
2
OS status of Interrupt control register (ICR)
FUJITSU MICROELECTRONICS LIMITED
2
OS)
2
OS), the system stack area, EI
(Interrupt request)and (ISE=1)
Data transfer
Decide whether to end counting or to
branch to an interrupt by termination
request from resource
S1,S0=01 or
S1,S0=11
MB90335 Series
2
OS descriptor,
2
OS)
2
OS)
Processing by Hardware
S1,S0=00
NO
YES
CM44-10137-6E
2
OS)
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