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CHAPTER 3 INTERRUPTS
Figure 3.8-2 EI
2
OS Use Flow
The extended EI
2
OS execution time for each flow is described below.
●
When data transfer continues (when the stop condition is not satisfied)
(Figure 3.8-1 + Table 3.8-2 ) machine cycles
●
When a stop request is issued from a resource
(36 + 6 × Table 3.5-1 ) machine cycles
●
When the counting is completed
(Table 3.8-1 + Table 3.8-2 + (21 + 6 × Table 3.5-1 ) machine cycles
Processing by EI
2
OSProcessing by CPU
EI
2
OS initialization
JOB execution
(Interrupt request)
Normal
termination
Data transfer
Setting of extended intelligent I/O service
(Switching channels)
Processing data in buffer
AND (ISE=1)
Count out or interrupt
generation by end
request from resource
Table 3.8-1 Execution Time when the EI
2
OS Continues
ISCS SE bit Set to "0" Set to "1"
I/O address pointer Fixed Updated Fixed Updated
Buffer address pointer
Fixed32343335
Updated34363537