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CHAPTER 3 INTERRUPT
3.6 Interrupts by Extended Intelligent I/O Service (EI
3.6.1
Extended Intelligent I/O Service (EI
Extended intelligent I/O service (EI
000100
to 00017F
H
■ Configuration of Extended Intelligent I/O Service (EI
Configuration of ISD consists of 8 bytes x 16 channels, and each ISD has the configuration shown in
Figure 3.6-2. The correspondence between the channel numbers and ISD addresses is as listed in Table 3.6-1.
ISD start address
(000100
+ 8 x ICS)
H
74
2
OS) descriptor (ISD) is existed to the addresses
in the internal RAM and consists of 8 bytes x 16 channels.
H
Figure 3.6-2 Configuration of EI
MSB
Data counter upper 8bit (DCTH)
Data counter lower 8bit (DCTL)
I/O Register address pointer upper 8bit (IOAH)
I/O Register address pointer lower 8bit (IOAL)
2
EI
OS status register (ISCS)
Buffer address pointer upper 8bit (BAPH)
Buffer address pointer middle 8bit (BAPM)
Buffer address pointer lower 8bit (BAPL)
FUJITSU MICROELECTRONICS LIMITED
2
OS)
2
2
OS) Descriptor (ISD)
2
OS Descriptor (ISD)
MB90335 Series
OS) Descriptor (ISD)
LSB
H
L
CM44-10137-6E
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