Extended Intelligent I/O Service; Os) Descriptor (Isd) - Fujitsu F2MC-16LX Hardware Manual

CHAPTER 3 INTERRUPT
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 × 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
76
2
OS) descriptor (ISD) is existed to the addresses
" in the internal RAM and consists of 8 bytes × 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)
2

OS) Descriptor (ISD)

2
OS) Descriptor (ISD)
2
OS Descriptor (ISD)
LSB
H
L