Interrupt Of Extended Intelligent I/O Service (Ei 2 Os) - Fujitsu F2MC-16LX Hardware Manual

3.7 Interrupt of Extended Intelligent I/O Service (EI
Extended Intelligent I/O service (EI
peripheral resources and memory. EI
completion of data transfer.
I Extended Intelligent I/O Service (EI
The Extended Intelligent I/O service is a type of hardware interrupt, serving as the function for
data transfer between a peripheral resource and memory. The user can create programs to
activate and terminate EI
❍ Advantages of Extended Intelligent I/O service (EI
The data transfer by EI
interrupt handler:
• No need to code a transfer program, resulting in smaller program size.
• Capable of triggering a transfer by a peripheral resource interrupt source, eliminating the
need for polling a data transfer source.
• Capable of setting the incrementing of the transfer address.
• Capable of the incrementing and no updating of the I/O register address.
❍ Interrupt upon completion of Extended Intelligent I/O service (EI
2
EI OS causes a branch to an interrupt handler upon completion of data transfer.
The interrupt handler can identify the EI
bits (S1, S0) in the interrupt control register (ICR).
Reference:
Interrupt numbers and interrupt vectors are fixed for individual resources. For details, see
Section 3.2 "Interrupt Sources and Interrupt Vectors".
❍ Interrupt control register (ICR)
The ICR can set the activation of EI
2
EI OS status upon termination of EI
2
OS) is the function to transfer data between
2
OS causes a hardware interrupt upon
2
OS)
2
OS without the need for providing a data transfer program.
2
OS has the following advantages over the data transfer executed by an
2
OS termination source by checking the EI
2
OS and its channel. It can also be used to display the
2
OS.
CHAPTER 3 INTERRUPT
2
OS)
2
OS)
2
OS)
2
OS status
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